Abstract: A monitoring and alert system for a radar-based object detection device has a blockage detection circuit including elements that detect and warn of radar blockage from dirt or debris on a radome. Environmentally-applied or human-applied material becoming attached to a surface of the radome can block the radar signal from being radiated, or a target return/echo from being received, at a sufficient power level. The monitoring and alert system prevents a vehicle operator from assuming that the unit is functioning properly and that no targets exist in the radar field of view, when the radar is actually blocked by the dirt and debris. One electrode, or multiple spaced-apart electrodes, on the radome may be monitored for each electrode's respective “self-capacitance”. Thus, different regions of the radome may be separately and independently monitored for alerts when one or more regions of the radome are negatively-affected by the dirt or debris.

Abstract: A method for analyzing the resolution and/or the accuracy of a transmission unit of a radar sensor is described wherein a transmitter signal is received via a receiving unit. At least one echo signal based on said received signal is simulated. The frequency difference of said transmitter signal and said echo signal is determined. Said frequency difference is filtered and transformed in order to obtain a transform. At least one maximum of said frequency difference in said transform is detected. Spectral properties of said frequency difference in said transform are determined. At least one quality parameter of said spectral properties is outputted. Further, a radar sensor is described.

Abstract: The present invention relates to a system and method for the monitoring and surveillance of one or more vehicles (120) moving on one or more roadways (300) and to the detection and recording of images and/or videos of speeding infractions by vehicles (120) moving on the roadway (300). The invention also relates to an unmanned air vehicle (10) that carries out the method according to the invention together with a base station (80), with which it forms the system according to the invention.

Abstract: A system is provided for resolving ambiguity in a phase measurement used in a distance estimation for an object. The system includes a transmitter for transmitting RF signals from an object location. The system includes measurement equipment for receiving the transmitted RF signals as corresponding received RF signals and measuring a plurality of phases at different frequencies between the transmitted RF signals and the corresponding received RF signals. The system includes a processor. The processor is configured to calculate normalized phases from the plurality of measured phases. The processor is configured to perform an intra-frequency ambiguity resolution process that resolves an ambiguity for the normalized phases for a single frequency using an ambiguity factor.

Abstract: Systems and methods for a radar system to produce a radar image of a region of interest (ROI). A set of antennas to transmit radar pulses to the ROI and to measure a set of reflections from the ROI corresponding to the transmitted radar pulses. A processor acquires an estimate of the radar image, by matching the reflections of the ROI measurements for each antenna. Determine a set of shifts of the radar image. Wherein each shift corresponds to an antenna, and is caused by an uncertainty in a position of the antenna. Update the estimate of the radar image, based on the determined set of shifts of the radar image. Wherein for each antenna, the estimate of the radar image is shifted by the determined shift of the radar image corresponding to the antenna, that fits the reflections of the ROI measurements of the antenna.

Abstract: Systems and methods in accordance with various embodiments of the present disclosure provide high efficiency synthetic aperture radar satellite designs that achieve higher power efficiency and higher antenna aperture size to satellite mass ratios than the current state of the art. In various embodiments, a high efficiency synthetic aperture radar satellite includes a satellite bus and a parabolic reflector antenna coupled to the satellite bus. The satellite system may further include a traveling wave tube amplifier configured to drive the parabolic reflector antenna, and a body-mounted steering system configured to mechanically steer the satellite system to direct the parabolic reflector antenna. The satellite system may further include a processor configured to combine the pulse reflections and generate image data representing the region of interest, in which the image data is effectively obtained with a synthetic aperture greater than the actual antenna aperture.

Abstract: A method for processing a measurement signal that is captured by a measuring device, wherein, in order to capture the measurement signal, the measuring device emits a transmission signal and receives a component of the transmission signal that is reflected by an object as a reception signal, wherein a first phase difference between a first target phase position and a first actual phase position contained in the measurement signal is determined, and wherein a second phase difference between a second target phase position and a second actual phase position contained in the measurement signal is determined, and a phase difference progression in the form of an, in particular, linear, functional relationship is determined on the basis of the first and the second phase differences, and a measured value is determined by means of the functional relationship.

Abstract: A radar transmitter transmits a radar signal through a transmitting array antenna at a predetermined transmission period, and a radar receiver receives a reflected wave signal which is the radar signal reflected by a target through a receiving array antenna. A transmitting array antenna and a receiving array antenna each include multiple subarray elements, the subarray elements in the transmitting array antenna and the receiving array antenna are linearly arranged in a first direction, each subarray element includes multiple antenna elements, the subarray element has a dimension larger than a predetermined antenna element spacing in the first direction, and an absolute value of a difference between a subarray element spacing of the transmitting array antenna and a subarray element spacing of the receiving array antenna is equal to the predetermined antenna element spacing.

Abstract: In some examples, a device sends first information to a service, the first information comprising location information of the wireless device, and receives, from the service, assistance information that is based on the first information. The device performs initial access of a wireless access network using the assistance information to achieve power saving at the wireless device, and transmits second information to the service over the wireless access network node.

Abstract: The present invention provides an electromagnetic wave blocking device having electromagnetic wave shielding and absorbing capacity. The electromagnetic wave blocking device having electromagnetic wave shielding and absorbing capacity includes: an electromagnetic wave blocking device body part configured such that an identical material is mixed with shielding and absorbing materials or different materials are arranged on both sides of a boundary of their sides to thus enable electromagnetic wave absorption and electromagnetic wave shielding; and an edge electromagnetic wave absorbing part formed along the boundary of the blocking device body part to thus additionally block electromagnetic waves. Furthermore, the present invention provides a method for manufacturing the electromagnetic wave blocking device.

Abstract: A method for extending a surface penetrating radar (SPR) footprint for performing localization with an SPR system is disclosed. The method may include may include transmitting at least one SPR signal from at least one SPR transmit element. The method may further include receiving a response signal via at least two SPR receive elements, the response signal including, at least in part, a reflection of the SPR signal from an object. The method may also include determining that the object is in a region of interest outside a footprint of the SPR system based on a difference in phase at which the response signal is received at the at least two SPR receive elements. The method may additionally include performing localization of a vehicle using the SPR system based at least in part on the object.

Abstract: The radar signal processing device includes: a transmitter; a receiver configured to acquire a received signal based on a reflected wave received from the object; a detector unit configured to detect information to be used for type determination of the object from the received signal; an object determination unit configured to determine a type of the object; and a control unit configured to identify a weighting factor set for each piece of the information to be used for the type determination of the object based on a characteristic of the received signal. The object determination unit is configured to obtain a total sum value by multiplying the corresponding weighting factor identified by the control unit for each piece of the information detected by the detector unit, and to determine the type of the object based on the total sum value.

Abstract: This patent relates to a mobile terminal and a method of controlling an operation of the same. The method of controlling an operation of a mobile terminal includes displaying a file list and scroll arrows for scrolling the file list on a touch screen. When the scroll arrow is touched and entered, the file list is scrolled at a scroll speed previously set in response to a time when the scroll arrow is touched and entered. A vibration signal to identify at least one of a scroll speed and a current scrolling position of the file list is provided. Accordingly, when a file list is scrolled, a scroll speed or a current scrolling position can be easily identified by a tactile sense.

Abstract: A mining work machine includes an obstacle determination device connected to a periphery detection device. If measurement points detected by the periphery detection device in a current cycle are equal to or greater than predetermined size thresholds equivalent in size to the mining work machine, these measurement points are put into a single obstacle candidate group. Based on relative speeds of the obstacle candidate at the measurement points and a traveling speed of the mining work machine, it is determined whether the obstacle candidate is a stationary object or a moving object, and whether the stationary object has been also detected by the periphery detection device in a preceding cycle. If a position of detection of the stationary object detected for the first time is equal to or smaller than a non-obstacle determination distance threshold, the obstacle determination device outputs the obstacle candidate as a non-obstacle.

Abstract: An object detection apparatus measures a distance to a detected object at each irradiation angle, based on reflected waves of electromagnetic waves irradiated from a laser light irradiating unit at each irradiation angle. The apparatus determines whether the measured distance remains unchanged for prescribed period of time, for each irradiation angle, and stores the determined distance in a storage unit as a stationary object distance in association with the irradiation angle. The apparatus compares the current measured distance and the stored distances, and determines whether a stationary object distance matching the current distance is present among the stored distances.

Abstract: A ground-penetrating radar system and method of operation are described. Particularly, embodiments describe configurations and operations of industrial truck safety systems that inform users of potentially hazardous conditions underground. Embodiments may detect a likely hazardous condition and perform additional examination in response to manual user and/or automatic computer input. Further embodiments may inhibit particular subsystems until the hazardous condition has been resolved and/or determined to be false.

Abstract: In a position detection system that has a plurality of transmitters/receivers placed at least three positions: processing is executed to measure distances among the plurality of transmitters/receivers, each distance being measured a plurality of times, and obtain a minimum value for each distance; processing is executed to obtain an angle between each two adjacent straight lines, each of which is one of straight lines that mutually connect the plurality of transmitters/receivers, by using minimum values, each of which is the minimum value for each distance; and if the absolute value of the difference between 180 degrees and the sum of angles, each of which is the angle between each two adjacent straight lines, inside a triangle formed by straight lines that interconnect three of the plurality of transmitters/receivers is smaller than a predetermined value, processing is executed to take the minimum values as the true values of the distances.

Abstract: A method of providing accurate position, navigation, and timing information comprising the steps of providing at least four transceiver devices, providing an auxiliary GPS device, and providing a receiver GPS device. Each transceiver devices receives a plurality of GPS signals from a plurality of GPS satellites, and calculates a transceiver position and transceiver velocity vector. The transceiver position, transceiver velocity vector, and GPS signal are repackaged at each transceiver into a first spread signal structure, which is transmitted from each transceiver as a first GPS-like signal. The GPS-like signal is received at an auxiliary GPS device, which generates a simulated GPS signal. This simulated GPS signal is then output and received by a simulated GPS device.

Abstract: Embodiments of the present disclosure disclose a link failure recovery method and apparatus. The method includes: first receiving, by a primary base station, failure report information sent by a user equipment, acquiring, according to the failure report information, an identifier of a data radio bearer (DRB) that needs to be reconfigured, and reconfiguring a parameter for the DRB that needs to be reconfigured; and then sending, by the primary base station, a first reconfiguration message to the user equipment, so that the user equipment reconfigures a failed DRB according to the first reconfiguration message. The present disclosure is applicable to the field of communications systems.

Abstract: A non-transitory computer readable recording medium stores therein a program that causes a computer to execute a process including: executing a process of acquiring a position of a terminal; determining whether there is object data registered in a position in an area corresponding to the acquired position by referring to a storage that stores positions in which multiple sets of object data are registered in association with the sets of object data, respectively; and displaying object data on a display when there is the object data registered in a position in the area, and curbing any one of frequency of executing the process of acquiring the position of the terminal and accuracy of the acquiring when there is no object data registered in a position in the area.