Abstract: Devices, systems, and methods for determining azimuth, elevation, or object position relative to a baseline using an integrated sighting device. The integrated sighting device includes a GPS receiver, an inertial measurement unit (IMU), an optical aperture, a microcomputer, and a handheld housing. The integrated sighting device, during transit from a reference position to a sighting position, determines a first angle between the sighting position and the reference position based on carrier phase input received during the transit. Orientation input is received from the IMU at the sighting position as the integrated sighting device is aimed and sighted along a line of sight to the reference position. The baseline is generated based on a second angle of the orientation input correlating with the first angle. The baseline is used as a reference for determining azimuth, elevation, or position of other objects or devices.

Abstract: A signal processing unit and a method for searching for peaks in a two-dimensional matrix of numbers are described. The matrix is analyzed row by row and then column by column. Analyzing a row comprises, for each element of the row, tagging the element in response to determining that the element is a local maximum of the row Analyzing a column comprises determining a bit field associated with the column by determining, for each element of the column, a corresponding bit field element Determining the bit field element comprises: if the element of the column has not been tagged, setting the bit field element to a predefined first value, and, if the element of the column has been tagged, determining whether the element is a local maximum and, in this case, setting the bit field element to a predefined second value different from the first value and, otherwise, setting the bit field element to the first value.

Abstract: The invention relates to a method for determining the distance (R) and relative speed (v) of at least one object remote from an observation point, comprising the following method steps: continuous transmission of at least one first and one second electromagnetic signal in each case of a signal period (Tchirp) from the observation point; the signals consist of signal portions (bursts) having a constant frequency and a predetermined equal duration, wherein the signal portions of a signal cover a predetermined modulation range by means of frequency steps; the signals are transmitted interlaced in that signal portions of the different signals follow one another in time, wherein a frequency hop occurs between the successive signal portions of different signals, receiving the signals reflected by the object as an echo signal and carrying out a mixed operation with the transmission signal for transformation of the received signal into the baseband in a common analog channel; carrying out an analog-to-digital convers

Abstract: A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on one or more of a selected range resolution, a selected velocity resolution, and a selected angle of arrival resolution, as defined by memory requirements and processing requirements. The system allows improved resolution of range, Doppler and/or angle depending on the memory requirements and processing requirements.

Abstract: The present invention provides a new art for grasping a moving direction of an underwater vehicle. In order to grasp the moving direction of the underwater vehicle, a measurement apparatus 2000 is installed in an underwater vehicle 4000. An electromagnetic wave receiving unit 2020 receives an electromagnetic wave signal, which a signal outputting apparatus 3000 outputs with a first frequency, in the water. A sound receiving unit 2040 receives a sound signal, which the signal outputting apparatus 3000 outputs with a second frequency, in the water. A frequency calculating unit 2050 calculates a frequency of the electromagnetic wave signal which the electromagnetic wave receiving unit 2020 receives, and a frequency of the sound signal which the sound receiving unit 2040 receives.

Abstract: A driving assistance device includes a camera, a moving object detector, a candidate reflection region detector, a predetermined position brightness detector and a cause determiner. The moving object detector and the candidate reflection region detector set a detection region for detecting, from image data captured by the camera, an existence of an adjacent vehicle in an adjacent lane. The predetermined position brightness detector detects a candidate light projecting object which projects light with brightness equal to or higher than a predetermined threshold value. The cause determiner determines whether or not there exists a candidate light projecting object which indicates the existence of the adjacent vehicle in the detection region.

Abstract: A target identifier can be configured to determine a synthesized profile for a target based on active sensor data that characterizes a radio frequency (“RF”) signal reflected by the target and received at an active sensor system. The synthesized profile can characterize an estimated Line of Bearing (“LoB”) and a radial speed (“Rdot”) of the target relative to a passive sensor system. The target identifier can also be configured to match the synthesized profile with a measured profile that is determined based on RF signals received at the passive sensor system. The measured profile characterizes a measured LoB and a measured Rdot of the target.

Abstract: A frequency modulated continuous wave (FMCW) radar system is provided that includes a receiver configured to generate a digital intermediate frequency (IF) signal, and an interference monitoring component coupled to the receiver to receive the digital IF signal, in which the interference monitoring component is configured to monitor at least one sub-band in the digital IF signal for interference, in which the at least one sub-band does not include a radar signal.

Abstract: A method for the determination of a speed vector for a gesture recognition system in a motor vehicle is disclosed. The method includes detection of movement data by a detection unit, and transmission of the movement data to a processing unit in the form of vectors. A totalling of the vectors to form a total vector occurs using the processing unit, until either the total vector reaches a predetermined minimum length or a predetermined number of vectors is totalled. If the predetermined number of vectors is totalled and the predetermined minimum length of the total vector is not reached, a determination of the speed vector as a zero vector occurs. If the predetermined minimum length of the total vector is reached, a determination of the speed vector occurs by averaging the information contained in the total vector. An accurate and dynamic determination of the speed vector is thereby achieved.

Abstract: A vehicle radar device provided with a transmission and reception unit for generating a beat signal from a transmission signal and a reception signal, a frequency analysis unit for generating a two-dimensional spectrum including a speed component and a distance component by applying prescribed frequency analysis processing to a signal sequence of the beat signal, and a speed determination unit for dividing the speed component of the two-dimensional spectrum into a plurality of blocks, carrying out constant false alarm rate (CFAR) processing on each of the plurality of blocks, and specifying the speed of the vehicle of the radar device on the basis of a threshold obtained through the CFAR processing.

Abstract: Operating a host vehicle is described as including identifying remote vehicle information indicating a geospatial state and a kinematic state for a remote vehicle and identifying host vehicle information indicating a geospatial state and a kinematic state for the host vehicle. For a sequence of sampling points, a converging time to a converging location within a transportation network is determined based on the remote vehicle information and the host vehicle information. Operation of the host vehicle is modified to a modified operation responsive to the converging time, having been above a first threshold, falling below the first threshold, and the modified operation of the host vehicle is maintained until the converging time remains above a second threshold higher than the first threshold for a defined number of contiguous sampling points of the sequence. A method, vehicle, and apparatus are described.

Abstract: A radar apparatus which includes a transmitting unit, a receiving unit, an I signal generating circuit, a Q signal generating circuit, a peak detecting circuit, a target detecting unit, and a distortion judging unit. The transmitting unit transmits a radar wave which is frequency-modulated along a time axis in a specified cycle, and the receiving unit receives an incoming wave which is a reflected wave of the radar wave transmitted by the transmitting means and amplifies it in an amplifier. The I signal generating circuit generates an I signal which is a real number component of a beat signal by mixing the incoming wave received and amplified by the receiving means with the radar wave transmitted by the transmitting unit. The Q signal generating circuit generates a Q signal which is an imaginary number component of a beat signal by mixing the incoming wave received and amplified by the receiving unit with the radar wave transmitted by the transmitting unit with a phase being shifted by ?/2 [rad].

Abstract: Method for determining distances and relative velocities of simultaneously located objects using an FMCW radar, in which the frequency of a transmission signal is modulated in the form of periodically recurring ramps, the transmission signal is mixed with a received signal to form an intermediate frequency signal and, for determining the distance and/or the relative velocity of the objects, the change in the phase of the intermediate frequency signal is evaluated from one ramp to the next characterized in that the modulation pattern includes at least two ramps, which differ only by a fixed frequency offset and follow one another in a certain time interval, and an unambiguous approximate value is calculated for the object distance on the basis of the phase difference ?1??2 of the intermediate frequency signals for these two ramps.

Abstract: A method and system for estimating velocity of an aircraft is provided. The method comprises transmitting a beam toward a surface from the aircraft using a Doppler beam sharpened radar altimeter, receiving a plurality of reflected signals that correspond to portions of the transmitted beam that are reflected by the surface, and forming a plurality of Doppler beams by filtering the received signals. A complex-valued array of range bin is computed with respect to frequency of the Doppler beams from at least one antenna aperture of the radar altimeter, and a range for each of the Doppler beams is estimated. A velocity vector magnitude for the aircraft is estimated by a curve fit of the range with respect to the frequency of the Doppler beams.

Abstract: A radar apparatus is installed in a vehicle and receives a reflection wave from a target to derive information about the target. The radar apparatus includes a signal processor to extract a peak signal that is obtained from a difference frequency between a transmission signal whose frequency changes in a prescribed cycle and a reception signal representing reception of a reflection wave that is generated from a transmission wave of the transmission signal reflected by the target, in each of an up period in which the frequency of the transmission signal increases and a down period in which the frequency decreases; and to determine whether a target information derivation environment is good or bad based on a number of the peak signals each of which corresponds to a static object having a plurality of angle information.

Abstract: Disclosed herein are a method and device for sensing a road environment based on a frequency modulated continuous wave (FMCW) radar. A method for detecting a road environment based on the FMCW radar includes the steps of: the FMCW radar performing a first scan to acquire a first frequency spectrum of beat signals, and shifting the first frequency spectrum based on first velocity information of a vehicle on performing the first scan; the FMCW radar performing a second scan to acquire a second frequency spectrum of beat signals, and shifting the second frequency spectrum based on second velocity information of the vehicle on performing the second scan; acquiring correlation information between the shifted first frequency spectrum and the shifted second frequency spectrum; and comparing the correlation information with a set threshold value and detecting the road environment.

Abstract: A distributed antenna system includes a plurality of head-end units for each receiving mobile communication signals from at least one corresponding base station, a hub unit communicatively coupled to the plurality of head-end units, and a plurality of remote units communicatively coupled to the hub unit, wherein the hub unit configured to distribute the mobile communication signals received from each of the plurality of head-end units to the plurality of remote units, wherein each of the plurality of remote units is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub unit includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end units, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.

Abstract: The invention provides a compact, high-frequency, transmit and receive millimeter-wave radar sensor device, system, and method of use. The sensor can operate at a variety of distances, speeds, and resolutions depending on the hardware components selected in a given implementation. The hardware and software architecture is generic and can be tailored to required applications.

Abstract: An image analyzer includes processing circuitry that receives at least one image having a first set of bins and a second set of bins, shifts the first or second set of bins by a number of bins associated with a motion hypothesis to achieve sets of aligned bins, determines a product for each set of aligned bins, compares the products to a product threshold, and identifies an object based on the products that exceed the product threshold.

Abstract: Systems and methods for using velocity measurements to adjust Doppler filter bandwidth are provided herein. In certain embodiments, a method for adjusting bandwidth for at least one Doppler filter in a Doppler beam sharpened radar altimeter comprises receiving a velocity measurement; adjusting the bandwidth of the at least one Doppler filter based on the velocity measurement; and transmitting a radar beam, wherein the radar beam is aimed toward a surface. The method further comprises receiving at least one reflected signal, wherein the at least one reflected signal is a reflection of the radar beam being reflected off of at least one portion of the surface; and filtering the at least one reflected signal with the at least one Doppler filter to form at least one Doppler beam.

Abstract: A single beam frequency modulated continuous wave radar for clear air scatter (CAS) detection and method of monitoring clear air scatterers are provided. CAS monitoring capabilities, including the ability to estimate wind velocity and direction, are obtained using data from a single defined width beam of energy that instead of being averaged is sampled at discrete time steps over a range of altitudes.

Abstract: A method of operating a data processing apparatus is provided. The method includes receiving video data; receiving a virtual test signal representative of a location of a virtual object; setting data representing the horizontal and vertical size of the virtual object dependent upon the location of the virtual object; overlaying the received video data with an image of the virtual object at locations determined from the virtual test signal to generate virtual test video data; and analyzing the virtual test video data and generating an alarm signal based on an output signal generated by said analysis.

Abstract: Radar detection of an object is achieved by identifying a first range associated with a possible object based on a first return from a first radar transmission having a first chirp rate, and identifying a second range associated with the possible object based on a second return from a second radar transmission having a second chirp rate that differs from the first chirp rate. The first and second ranges are evaluated together to determine whether the possible object is a true object.

Abstract: A method and system are disclosed for tracking a remote vehicle which is driving in a lateral position relative to a host vehicle. Target data from two radar sensors are provided to an object detection fusion system. Wheels on the remote vehicle are identified as clusters of radar points with essentially the same location but substantially varying Doppler range rate values. If both wheels on the near side of the remote vehicle can be identified, a fusion calculation is performed using the wheel locations measured by both radar sensors, yielding an accurate estimate of the position, orientation and velocity of the remote vehicle. The position, orientation and velocity of the remote vehicle are used to trigger warnings or evasive maneuvers in a Lateral Collision Prevention (LCP) system. Radar sensor alignment can also be calibrated with an additional fusion calculation based on the same wheel measurement data.

Abstract: The invention relates to a method for operating an environment-monitoring system for a motor vehicle, by means of which the positions of objects in the environment laterally adjacent to, in front of, and behind the vehicle are determined. According to the invention, in order to improve the accuracy of the environment-monitoring system, the motion path is determined for a stationary object which the vehicle passes, and said motion path is used to determine the angular deviation with which the motion path determined for the stationary object deviates from the motion path of the vehicle.

Abstract: The general field of the invention is that of Doppler lidars intended to measure the speed of a target. The lidar according to the invention comprises: First means for modulating the optical frequency of the transmission signal, said frequency being the sum of a constant frequency and of a variable frequency of determined amplitude modulated by a periodic temporal function; Second means for computing the spectrum of the measured heterodyne signal and for creating two measurement spectra obtained by shifting the spectrum of the heterodyne signal by a positive and negative frequency value, said realignment frequency equal to the difference between the instantaneous frequency of the transmission signal and the frequency of a signal transmitted at a time shifted by the round-trip travel time between the lidar and the target; Third means for comparing the two measurement spectra, the difference in amplitude between the two spectra at the Doppler frequency determining the direction of the speed of the target.

Abstract: The disclosure provides a radar apparatus fur estimating a distance of the one or more obstacles in a range of interest. The radar apparatus includes a local oscillator that generates a first ramp segment having a first start frequency. A frequency shifter receives the first ramp segment and generates a transmit signal and a mixer signal. The transmit signal is scattered by a one or more obstacles in the range of interest to generate the scattered signal. A mixer mixes the scattered signal and the mixer signal to generate a non-zero IF signal which is filtered to generate a filtered non-zero IF signal. An ADC (analog to digital converter) samples the filtered non-zero IF signal to generate a valid data. A DSP (digital signal processor) processes the valid data for estimating the distance of the one or more obstacles.

Abstract: A system and method of retrieving a vehicle includes generating a path from a final destination to a starting position, receiving a command to retrieve the vehicle, and autonomously operating the vehicle along the path from the final vehicle destination to the starting vehicle position.

Abstract: A radar device according to an embodiment includes a transmission unit, a reception unit, a processing unit, a first determination unit, and a second determination unit. The transmission unit emits transmission signals. The reception unit receives reception signals acquired by reflecting the transmission signals on an object. The processing unit detects object data corresponding to the object from the reception signals. The first determination unit determines object data included in a predicted range based on past object data detected in the past as past correspondence data having time continuity with respect to the past object data. In a case where parameters of new data that has not been detected in the past and the past correspondence data have predetermined relation, the second determination unit determines that the new data and the past correspondence data correspond to the same object.

Abstract: A wideband digital receiver includes an antenna, an amplifier, and a digital IFM device for measuring the frequency of the received signal or signals based on the result of discrete Fourier transforms DFT applied to said received signals. The receiver includes means for periodically estimating the phase jumps of said signals by combining the measurements of the phase of said signals produced by the transforms DFT.

Abstract: A method and system are disclosed for tracking objects which are crossing behind a host vehicle. Target data from a vision system and two radar sensors are provided to an object detection fusion system. Salient points on the target object are identified and tracked using the vision system data. The salient vision points are associated with corresponding radar points, where the radar points provide Doppler radial velocity data. A fusion calculation is performed on the salient vision points and the radar points, yielding an accurate estimate of the velocity of the target object, including its lateral component which is difficult to obtain using radar points only or traditional vision system methods. The position and velocity of the target object are used to trigger warnings or automatic braking in a Rear Cross Traffic Avoidance (RCTA) system.

Abstract: A set of radar data is organized as a two dimensional (2D) array with multiple lines of data. A 2D cross point analysis is performed on each set of data to detect objects in range of the radar system. A set of candidate objects is identified by performing an initial one dimensional (1D) analysis on a line of data along a first axis of the set if data to determine a candidate location of each candidate object along the first axis; however, the set of candidate objects may include false objects. The set of candidate objects is pruned by performing a cross 1D analysis of the data along a second axis of the set of data at a position corresponding to each candidate location along the first axis to select a set of most likely candidate objects from the set of candidate objects.

Abstract: In a method for detecting radar objects with the aid of a radar sensor of a motor vehicle, a transmitted signal has a sequence of frequency modulations, to each of which a partial signal of a measuring signal is assigned; first information about the relative velocity and the distance of a radar object is ascertained based on a frequency spectrum of at least one of the partial signals; second information about the relative velocity and the distance of the radar object is ascertained based on a frequency spectrum of a time curve of values of frequency spectra of the partial signals at a frequency position of the radar object in these frequency spectra; and the relative velocity and the distance of the radar object are ascertained based on matching of the first information with the second information.

Abstract: A method according to an illustrative embodiment includes generating first, second, third, and fourth signals. The method also includes transmitting from an antenna, the first signal, and transmitting the antenna, the second signal. The first and second signals are configured such that when the signals are transmitted simultaneously the signals constructively interact to form a first beam signal. The first beam signal has a first look angle. The method also includes transmitting from the antenna the third signal and from the antenna the fourth signal. The third and fourth signals are configured such that when the signals are transmitted simultaneously the signals constructively interact to form a second beam signal. The second beam signal has a second look angle. The method also includes receiving a first and second reflected signals and generating an interferogram utilizing information in the first and second reflected signals.

Abstract: A radar apparatus is installed in a vehicle that moves along its direction of travel. A radar transmission unit transmits a high frequency radar transmission signal from a transmit antenna in each transmit period. In a radar reception unit, antenna system processing units each generate a correlation vector by computing the correlation between reflected wave signal from a stationary object or a moving object and the radar transmission signal. A Doppler frequency-azimuth conversion unit converts Doppler frequencies into the components of an azimuth in which the stationary object is present using an estimated vehicle speed vector for the vehicle. A stationary object azimuth estimation unit generates the power profile of the reflected wave signal using the correlation vector and a direction vector corresponding to the components of the azimuth in which the stationary object is present.

Abstract: The present invention relates to a method for multi-mode obstacle detection using radar, including the steps of: determining whether an object moves by acquiring radar information on the object; discriminating between a stationary object and a moving object according to whether the object moves; executing a first detecting mode for detecting the stationary object or a second detecting mode for detecting the moving object; and transmitting location information on the stationary object obtained through the first detecting mode, or location and speed information on the moving object obtained through the second detecting mode, to an external terminal. According to the method for multi-mode obstacle detection using radar, and to the apparatus for same, multi-detection modes can be provided to separately detect a stationary object and a moving object using the radar information on the object obtained using radar, thereby increasing location tracking efficiency for each object.

Abstract: Methods and systems are provided for efficiently packing nodes within an electromagnetic state space.

Abstract: An object detecting device includes a signal transmitting and receiving unit configured to generate an intermediate frequency signal based on a transmission signal and a reception signal which is a reflected wave thereof, a processing unit configured to determine that an image of a target peak frequency is a virtual image based on noise when it is determined that a peak frequency of predetermined n times the target peak frequency is not present in information based on the intermediate frequency signal generated by the signal transmitting and receiving unit and to detect an object based on the determination result, where n is an integer of 2 or greater.

Abstract: A known ground location (KGL) satellite transceiver can include a position and elevation acquisition module configured to determine a time of flight (TOF) of a pseudonoise (PN) signal and a Doppler shift in a KGL signal for use in determining an orbit of a satellite. The PN signal can include a transmitted PN signal and a transponded PN signal. The KGL signal can include a transmitted KGL signal and a transponded KGL signal. The transmitted PN signal and the transmitted KGL signal can be transmitted sequentially on a first frequency carrier from the KGL satellite transceiver to the satellite. The transponded PN signal and the transponded KGL signal can be retransmitted back sequentially on a second frequency carrier from the satellite to the KGL satellite transceiver. The first frequency carrier and the second frequency carrier use a same frequency carrier or a different frequency carrier from each other.

Abstract: In a method for cyclically measuring distances (d) and relative velocities (v) of objects using an FMCW radar sensor, the frequency (f) of a transmitted signal of the radar sensor is periodically modulated, each period (P) including at least two differing modulation patterns, a relationship between distance (d) and velocity (v) of the object being derived from a signal received for a single modulation pattern, and the signals received for multiple modulation patterns being adjusted to one another in order to determine one value each for the distance and the velocity per each measuring cycle. For the adjustment between a signal obtained for a modulation pattern in the instantaneous measuring cycle and the signal(s) obtained for other modulation patterns, the signals from at least one previous measuring cycle are utilized.

Abstract: A method, device, system and use for determining a distance, location and/or orientation including the at least relative determination of a position of at least one object using at least two active anchors. A first signal is emitted by a first of the two anchors and is received at the object and by a second of said two anchors. A phase measurement is performed at said second anchor and wherein a distance determination with respect to said first anchor is performed and/or the distance from said first anchor to said second anchor is known. A second, particularly electromagnetic, signal is emitted from said second anchor, and information on phase measurement and distance between said first and second anchors is made available to a computation unit and at least one phase measurement respectively of said first and second signal is performed at said object and made available to said computation unit.

Abstract: A bistatic synthetic aperture radar (SAR) imaging system and method include: combining each radar return pulse from airborne radar platforms with a sinusoid; deskewing each reduced radar return pulse; estimating motion parameters based on a maximum likelihood estimation (MLE); performing MLE motion correction to generate motion-corrected radar return pulses; acquiring position and velocity estimates of the airborne radar platforms and scattering locations; defining bistatic range and velocity vectors; defining new bistatic range and velocity vectors in a new set of orthogonal axes; projecting vector distance differences between the radar scattering locations along the new set of orthogonal axes to generate new range and velocity measurements along the new set of orthogonal axes; converting the new range and velocity measurements to map Doppler frequency into cross-range; and forming a bistatic SAR image in range and cross-range based on cross-range extent derived from the Doppler frequency mapping.

Abstract: A target object detection device is provided. The device includes an antenna unit for transmitting a detection signal in an observing direction at a predetermined detection cycle and receiving a reflection signal of the detection signal, a receiver for outputting reception data obtained by sampling the reception signal that is received by the antenna unit, a detection data generator for outputting detection data obtained by correlating current reception data with previous detection data, and a detection cycle adjuster for adjusting the detection cycle based on the detection data.

Abstract: Described is a device as well as a method for measuring a change in distance between a stationary initial point and an object, wherein frequency-modulated, continuous electromagnetic microwaves are emitted as an emitting signal (4) in the direction of the object such that the emitting signal (4) is reflected by the object and an echo signal (5) generated at the object following the reflection of the emitting signal (4) is received and evaluated. The method described or the FMCW radar apparatus designed according to the invention, respectively, is based on a hardware extension of a standard FMCW radar apparatus and offers the possibility of evaluating a time-independent part of the mixed signal phase (6) by means of evaluation electronics (18) while taking into account a propagation time of the emitting (4) and/or echo signal (5) between emitting unit (2) and object so that a change in distance between emitting unit (2) and object can be detected as a result of a change in propagation time.

Abstract: A radar sensor and a method of detecting an object by using the same are provided. The method includes: receiving at least one radar signal reflected from the object; converting the received at least one radar signal to at least one signal in a frequency domain; accumulating the converted at least one signal for a predetermined time and extracting at least one feature from the accumulated at least one signal; and identifying the object by comparing the extracted at least one feature with at least one reference value stored in a database.

Abstract: The present invention relates to an object detection system and method for determining range and velocity of a target object by transmitting a frequency modulated continuous wave transmission signal and receiving transmission signal reflections of the transmission signal from the target object as a reception signal. Each modulation block of the transmission signal comprises a number of first type chirps, each first type chirp having a first slope, and a number of second type chirps, each second type chirp having a second slope different from the first slope. Two consecutive chirps of the same type have a frequency offset A mixed signal based on the transmission signal and the reception signal and using the first type chirps and the second type chirps is processed, in order to determine the range and velocity of the target object.

Abstract: An embodiment of the present invention relates to a radar apparatus, wherein a distance to a target and a velocity of the target are measured by transmitting a digitally modulated transmitting signal using a digital code and receiving and demodulating an echo signal returned due to reflection of the transmitting signal from the target.

Abstract: This invention relates to a method for determining at least one of a distance and a relative velocity by means of continuous wave radar measurements. The method includes generating a measurement signal in the form of a continuous wave radar signal; transmitting the measurement signal by means of an antenna (112); reflecting the measurement signal by means of a reflector (118), thereby providing a desired reflected measurement signal; receiving the desired reflected measurement signal; and determining at least one of a distance and a relative velocity between the antenna and the reflector by means of the desired reflected measurement signal. The reflection of the measurement signal involves asymmetrically modulating the measurement signal at the reflector. The determination of at least one of a distance and a relative velocity includes detecting the desired reflected measurement signal among several received reflections of the measurement signal, by means of information added by the asymmetric modulation.

Abstract: An apparatus for detecting a target in near field in accordance with an exemplary embodiment of the present invention includes: an RF transceiver configured to generate a transmitting signal of a frequency modulated continuous wave (FMCW) and delay the signal as much as a desired time; a transmitting and receiving antenna unit configured to transmit and receive the a transmitting signal and the received signal; and a signal processing unit configured to extract a range or a velocity of the target from the signal provided from the RF transceiver.

Abstract: The present invention relates to a method for determining distance (R) and radial velocity (v) of an object in relation to a measurement location, in which method radar signals are emitted and after reflection on the object are received again at the measurement location, wherein the emitted radar signals are subdivided within a measuring cycle into numerous segments (10) in which the frequency of the radar signals is gradually changed from an initial value (fA, fB) to the end value and each received reflected signal is subjected across one segment (10) to a first evaluation to detect frequency peaks and additionally a subsequent second evaluation of the signals for the frequency peaks of all segments (10) of the measuring cycle is carried out to determine a Doppler frequency component as a measure of the radial velocity (v).