Abstract: Systems and methods for automated unmanned aerial vehicle recognition. A multiplicity of receivers captures RF data and transmits the RF data to at least one node device. The at least one node device comprises a signal processing engine, a detection engine, a classification engine, and a direction finding engine. The at least one node device is configured with an artificial intelligence algorithm. The detection engine and classification engine are trained to detect and classify signals from unmanned vehicles and their controllers based on processed data from the signal processing engine. The direction finding engine is operable to provide lines of bearing for detected unmanned vehicles.

Abstract: An unmanned aerial vehicle includes a main body and at least two rotor units configured to propel the unmanned aerial vehicle. The unmanned aerial vehicle includes at least two antenna units configured to receive a radio signal. The antenna units are located with respect to the main body such that the antenna units are assigned to different lateral sides of the main body. Further, a direction finding system is described.

Abstract: An information processing apparatus includes: an acquisition unit configured to acquire pieces of information on position of the information processing apparatus; a receiving unit configured to receive radio waves from a search target apparatus; a calculation unit configured to calculate the position of the search target apparatus using the pieces of information on position of the information processing apparatus acquired at plural points by the acquisition unit and using a distance between the information processing apparatus and the search target apparatus estimated from an intensity of the radio waves received by the receiving unit at each of the plural points; and a notification unit configured to send notification to guide a searcher to the position of the search target apparatus calculated by the calculation unit.

Abstract: The subject matter discloses a system implemented on in a mobile electronic device, the system comprising a processing system of the device; and a memory that contains instructions comprising: detecting ambient sounds in the vicinity of the mobile electronic device; determining at least one property selected from a group consisting of a relative direction and relative distance of the ambient sounds relative to the mobile electronic device; analyzing the detected ambient sounds; outputting audio Interactive Music data based on the analysis of the ambient sounds and based on at least one of a relative direction and relative distance of the ambient sounds relative to the mobile electronic device; wherein said outputting is performed on the mobile electronic device.

Abstract: A technique includes sensing energy emitted from an object using an omnidirectional antenna of electronic device and sensing the energy using a unidirectional antenna of the electronic device. The technique includes, based at least in part on the sensing of energy using the omnidirectional antenna and the sensing of the energy using the unidirectional antenna, determining whether an image of the object is displayed in a camera viewfinder of the electronic device. The technique includes selectively causing the electronic device to generate an output based at least in part on the determination.

Abstract: The invention relates to reliable diagnostic apparatus for a switchgear which may minimize the probability of failure in diagnosing a deterioration of a switchgear. The diagnostic apparatus for a switchgear comprises a VHF sensor detecting an electromagnetic wave signal of a VHF band, which is generated by the switchgear; a UHF sensor detecting an electromagnetic wave signal of a UHF band, which is generated by the switchgear; a data acquisition unit that acquires the electromagnetic wave signals detected by the VHF sensor and the UHF sensor, and converts the electromagnetic wave signals into data indicating magnitudes of the electromagnetic wave signals; and a diagnosis unit connected with the data acquisition unit and that executes analysis including whether the data provided by the data acquisition unit is a pattern of a partial discharge signal and stores the analyzed result.

Abstract: Provided are systems and methods tracking a prayer session of a device user and notifying the device user regarding prayer session activity. The method includes receiving motion information from an accelerometer of the device, receiving altitude information from an altimeter of the device, and receiving position information from a gyroscope of the device while the device user is engaged in the prayer session. The method further includes determining a prayer unit number or prayer position based on one or more of the received motion information, altitude information, and position information, and notifying the device user of the determined prayer unit number or prayer position.

Abstract: A method of determining locations of radio beacons includes: self-locating and automatically orienting electronic device hubs, determining angles of arrival of radio beacon signals at the electronic device hubs using received signal strength of radio beacons, refining received signal strength based on angle of arrival of the radio beacon signals, determining range using the refined received signal strength and antenna orientation based propagation loss models that compensate for obstacles in a deployment environment and, combining angles of arrival and ranges determined at the electronic device hubs at one of the electronic device hubs and determining locations of radio beacons within a predetermined acceptable accuracy, wherein the electronic hub devices function as receiving devices and radio beacons and radio beacon signals from a subset of the radio beacons are received at more than one electronic hub device.

Abstract: A locator includes a base unit and a handheld unit. The base unit, which is typically stationary, includes an FSK transceiver and printed circuit antennas. The handheld unit, which is typically mobile, also includes an FSK transceiver and printed circuit antennas. The handheld unit computes at least one bearing to the base unit over multiple frequencies and transmitting antennas, processes statistics of bearing results, determines a cyclic average of the bearing results, calculates an overall variance, assesses quality of a computed bearing result based on the overall variance, and upon assessing, either displays the computed bearing result or disqualifies the computed bearing. The handheld unit computes a height difference between the base unit and the handheld unit. The height difference is calculated using altimeters within the units. Alternatively, the height difference is calculated using GPS.

Abstract: A device provides location information to assist in identifying the location of RF sources. Antenna arrays coupled to corresponding receivers supply signals to a direction of arrival computation block, and the direction information is used to provide a display showing the location of the RF source.

Abstract: A display apparatus includes a detector to detect an angle of a center line of the display apparatus relative to a horizontal line of the south geomagnetic pole when in the horizontal plane. The apparatus stores a reference angle. The apparatus determines the rotation angle of the display apparatus by subtracting the reference angle from the angle of the center line of the display apparatus relative to the horizontal line of the south geomagnetic pole; and rotates display content according to the rotation angle. A related method is also disclosed.

Abstract: An orientation and localization system is provided with spatial filtering capabilities that combines time polarization and space diversity to detect the direct lines of sight (LOS) and to deliver location and orientation estimates of mobile nodes.

Abstract: To suppress adverse effects caused by side lobes of an antenna array when an AWV to be used for communication is determined based on a transmission/reception result of a training signal. A first transceiver generates a fixed beam pattern and transmits a training signal. In that state, a second transceiver receives the training signal while scanning for the main beam direction, and thereby determines a plurality of direction of arrivals (DOAs). Next, the second transceiver receives the training signal in a state where the signal receptions from the plurality of DODs are restricted one by one (e.g., a null direction or a direction close to the null direction is fixed in the DOA), and calculates the change of the signal characteristics from that obtained in the first reception.

Abstract: A search system for searching buried persons is provided including a radio device with a receiving device including at least one receiving antenna and adapted to receive the field of a transmitter antenna, wherein the radio device is adapted to determine the direction of the field vector of the transmitter antenna relative to the at least one receiving antenna; as well as a user interface device with at least one interface for interfacing with the radio device, as well as at least one output device for outputting search information derived from the direction of the determined field vector and perceivable by a user; wherein the radio device and the user interface device are each formed as separate units, which are each encompassed by an own housing, and wherein the search system includes determining means for determining the relative orientation of the user interface device to the radio device. Moreover, it relates to a corresponding method for searching a buried person.

Abstract: An apparatus and method for estimating the direction of an RF signal is provided. The apparatus includes an antenna for receiving an RF signal. An electronic compass is configured to, as a pointing direction of the antenna is varied, generate information about pointing directions and pointing angles corresponding to variations in the pointing direction of the antenna. A control unit determines RSSI values at respective, pointing angles of the antenna based on a received signal of the antenna and information of the electronic compass depending on the variations, extracts a maximum RSSI value from the RSSI values at respective pointing angles, and stores the maximum RSSI value and a pointing direction corresponding to the maximum RSSI value. A display unit displays the RSSI values at the respective pointing angles and a trajectory of the RSSI values at respective pointing angles under control of the control unit.

Abstract: A computer estimates multiple angles of arrival of a target signal received by an array of commutated antenna elements. In one aspect, samples of a received target signal obtained from an array of communicated antenna elements and from an element in an array of reference antenna elements are processed to make maximum-likelihood-estimations of multiple angles of arrival at which signals are received by the array of commutated antenna elements; and a display is mapped over time and frequency of the estimations, with the angle of arrival for a particular sample being represented by a variable given display feature.

Abstract: A device provides location information to assist in identifying the location of RF sources. Antenna arrays coupled to corresponding receivers supply signals to a direction of arrival computation block, and the direction information is used to provide a display showing the location of the RF source.

Abstract: An apparatus for direction-finding a received radio signal is disclosed. The receiving apparatus selectively receives on a predetermined frequency to match the transmitter frequency. The receiving apparatus comprises of two or three antennas, including one or two loop antennas that work in conjunction with a third reference antenna (whose phase does not vary when its orientation changes relative to the transmitter) such as a dipole, monopole or helical antenna. By comparing the phase between the antennas the direction of the incoming RF signal can be determined. In some embodiments, the windings of the two loop antennas are wound in reverse with respect to each other in order to substantially double the sensitivity of the signal-detection capabilities.

Abstract: Method embodiments are disclosed to determine arrival directions of electromagnetic signals that have a known signal frequency and a known guided signal wavelength. These methods are realized with an antenna configured to define, at the signal frequency, at least one metamaterial cell between first and second signal ports. They then include the step of rotating the antenna until the differential power from the first and second signal ports is substantially zero and then determining the arrival direction as a normal to the metamaterial cell. In other method embodiments, the antenna is stationary and a differential power is determined wherein the differential power is defined as the difference between received powers from the first and second ports. The arrival direction of electromagnetic signals are then determined from the differential power.

Abstract: To suppress an adverse effect caused by side lobes of an antenna array when determining an AWV to be used in communication. A first communication device transmits/receives a training signal while scanning a beam pattern, and a second communication device receives/transmits the training signal with a fixed beam pattern. A primary DOD/DOA in the first communication device is determined based on the transmission/reception result of the training signal. Then, second round training is performed. In this point, the first communication device transmits/receives the training signal while scanning a beam pattern in a state where transmission to the primary DOD or reception from the primary DOA is restricted. A secondary DOD/DOA is determined based on the result of the second round training. An AWV corresponding to the primary DOD/DOA and an AWV corresponding to the secondary DOD/DOA are selectively used in communication between the first and second devices.

Abstract: Described herein is a method and apparatus for the detection of signals in an area of interest. Three sensor channels are provided for sensing radiated emissions in an area of interest, each channel having a sensor and a processor, the three channels sensing radiated emissions in the very low frequency band, the high/very high frequency band, and the ultra high frequency band respectively. The first and third sensor channels provide input signals to the processor in the second sensor channel so that accumulated signal data can be processed to produce an input signal for a comparator. The comparator compares the input signal with data stored in a database to indicate presence of equipment having known modes of operation.

Abstract: A manufacturing method of ground-buried-type solid insulation transformer includes producing a coil form into which an inner window is formed; winding a low voltage coil and a high voltage coil on the coil form to produce a first coil part; winding glass fiber on the first coil part to produce a second coil part and assembling a first mold into the inner window and then pre-heating the second coil part; putting the second coil part into a second mold and injecting epoxy resin and hardener between the second coil part and the second mold, and automatically molding and curing thereof under predetermined speed, vacuum, pressure and temperature to produce a third coil part on outer circumference of which an epoxy layer is formed; separating the first mold from the inner window of the third coil part and then after-treating and curing the third coil part; cooling the after-treated and cured third coil part and sanding and washing the epoxy layer, and applying semi-conductive coating material to the sanded part to

Abstract: A system for establishing a wireless link from a wireless communication device (WCD) to at least one target device. The process of both identifying the target device and establishing a link to this device may incorporate the orientation and/or movement of the WCD into the procedure in lieu of the extensive use of traditional menu interfaces. A WCD may interpret a combination of orientation and/or movement as an approximate target device location that may be utilized to narrow the total population of all located devices into a subset containing those devices located within of near the approximate target device location. The subset of devices may be formulated and displayed as potential target devices for selection by a user. If any of the potential target devices are known by the WCD, a link may be established automatically.

Abstract: An RF signal detection process by incorporating direction detection of the RF signal along with energy detection to arrive at a signal of interest (SOI). The SOI is identified by matching direction detections and energy detections. Low-level and noise-like signals can be reevaluated for unresolved direction detections or energy detections. The RF signal detections can be filtered based on valid direction detections very early on in the processing chain to reduce the amount down-stream processing required.

Abstract: A method of locating a terrestrial emitter of electromagnetic radiation in the midst of a plurality of emitters in a satellite in orbit about the earth which utilizes a location estimation and location probability determination process with respect to each possible emitter site and its corresponding error region and then using both feedback and feed forward interaction between location and phase ambiguity resolution processes to generate resolved phase from emitter location, update emitter location or some or all of the emitters, and subsequently utilizing the probabilities thus determined to produce a single estimate of the desired emitter's location.

Abstract: A system for indicating the relative direction of a target object or location as determined from the current position of a wireless communication device. The system employs Direction of Arrival determination using an antenna array for indicating the direction of a target device and includes facilities to activate a location-indicating transmission in a target device, the ability to request that a location-indicating transmission be activated in a remote target device, relevant information reception from a target device and the display of all potential target devices within effective transmission range of the wireless communication device.

Abstract: A system for indicating the relative direction of a target object or location as determined from the current position of a wireless communication device. The system employs Direction of Arrival determination using an antenna array for indicating the direction of a target device and includes facilities to activate a location-indicating transmission in a target device, the ability to request that a location-indicating transmission be activated in a remote target device, relevant information reception from a target device and the display of all potential target devices within effective transmission range of the wireless communication device.

Abstract: An incoming direction estimation apparatus estimates an incoming direction of a radar wave using three or more sensors or antennas simultaneously. An arithmetic expression for estimating an incoming direction of a radar wave is configured as sin?1((1/2?a)*tan?1b). The “a” is d/? determined by an antenna interval and by a wavelength ? of a carrier, or such, carrying the radar wave. A simultaneous use of three antennas makes it possible to set the a as a value depending on a value d0=a0? based on the interval between first antennas and value d1=a1? based on the interval between second antennas. Therefore, if a wide field of vision of an incoming direction is needed, it is only necessary to adjust (d1?d0)/?=(a1?a0), in place of the absolute interval of antennas a=d/?, thereby making it possible to lessen a limitation on the design of antennas and set a field of vision of the incoming direction appropriately.

Abstract: Method and apparatus for processing satellite signals in an SPS receiver is described. In one example, the satellite signals are correlated against pseudorandom reference codes to produce correlation results. A determination is made whether the SPS receiver is in a motion condition or a stationary condition. The correlation results are coherently integrated in accordance with a coherent integration period. The coherent integration period is a value that depends upon the motion condition of the SPS receiver.

Abstract: A method for determining the direction of an incoming signal is provided in which each of a plurality of receivers arranged in a linear array is sampled in sequence to simulate a single receiver moving along an aperture defined by the linear array at a simulated speed. This generates a simulated time series data from which a simulated Doppler shift in the incident angle is measured. The simulated Doppler shift is used to determine the incident angle between the incident signal and the linear array of receivers. By adjusting the simulated speed to eliminate artifacts in the power spectral density of the data obtained from the receivers, the incident angle can be obtain from the expression of the simulated Doppler shift.

Abstract: A method of locating a terrestrial emitter of electromagnetic radiation in the midst of a plurality of emitters in a satellite in orbit about the earth which utilizes a location estimation and location probability determination process with respect to each possible emitter site and its corresponding error region and then using both feedback and feed forward interaction between location and phase ambiguity resolution processes to generate resolved phase from emitter location, update emitter location or some or all of the emitters, and subsequently utilizing the probabilities thus determined to produce a single estimate of the desired emitter's location.

Abstract: A method and system for providing a bearing from a vehicle to a transmitting station are described. The method includes accessing a database to obtain transmitter position information for the transmitter, obtaining vehicle position information based on a GPS signal, and generating the bearing from the vehicle to the station utilizing the transmitter position information and the vehicle position information. The system includes a database storing transmitter position information identifying a position of the transmitter, a GPS receiver obtaining vehicle position information identifying a current position of the vehicle based on a GPS signal, and a controller generating a bearing from the vehicle to the transmitter utilizing the transmitter position information and the vehicle position information.

Abstract: A wireless communication method and antenna system for determining the direction of arrival (DOA) of received signals in azimuth and elevation, (i.e., in three dimensions), to form a beam for transmitting and receiving signals. The system includes two antenna arrays, each having a plurality of antenna elements, two first stage multi-mode-port matrices, at least one second stage multi-mode-port matrix, an azimuth phase detector, an elevation amplitude detector, a plurality of phase shifters and a transceiver. The antenna arrays and the first stage multi-mode-port matrices form a plurality of orthogonal omni-directional modes. Each of the modes has a characteristic phase set. Two of the modes' phases are used to determine DOA in azimuth. The second stage multi-mode-port matrix forms a sum-mode and a difference-mode used to determine the DOA of the received signals in elevation. A beam is formed in the direction of the received signals by adjusting the phase shifters.

Abstract: A system for enhancing the performance of a wireless communication device (WCD) while executing a direction of arrival (DoA) estimation. The performance may be improved through device management, and may include the collection of information from one or more sensors installed within the WCD. The sensor information may initially be used to determine an appropriate configuration for the device. Further, the sensor information may also be used to affect the behavior of the device while performing the DoA estimation.

Abstract: A receiver (1) of a position-finding system comprises a calculation unit (6, 7, 8) for calculation of a statistical value (?) on the basis of a received signal, and a detector unit (9) for comparison of the statistical value (?) with a threshold value (?) and for determining whether the received signal is a synchronized location signal, an estimation unit (10) for estimation of the Rice factor (K) of the radio link via which the received signal has been transmitted, and a determination unit for calculation of the threshold value (?) on the basis of the Rice factor (K).

Abstract: A system and method for visualization of attitude dependent data is disclosed. An attitude sphere is defined around an object of interest located at the center. Grid points are defined on the surface of the attitude sphere to represent directions. An attitude dependent FOM result is mapped onto the sphere, which is color coded on the associated point to visualize attitude dependency. When used to analyze signals arriving at a receiver, the method accounts for motion of the receiver, the transmitter, and the signal sources. The objects comprise values of figures of merit (FOMs) that are accessible to a user. Additionally, the objects are updated dynamically to reflect the experience of the receiver over time. The receiver orientation may be optimized to minimize interference and jamming and/or to maximize signal strength of a desired signal.

Abstract: A location apparatus for returning to a user to a location including a system unit configured to compute a location using radio signals, a user interface unit having a display area and first and second buttons, a memory unit, and a computational unit configured to interact with the first and second buttons. The computation unit retrieves a first location from the system unit and stores the first location in the memory unit upon selection of the first button by the user. Further, the computation unit retrieves a second location from the system unit and calculates a relative three-dimensional direction from the second location to the first location upon selection of the second button by the user. The relative three-dimensional direction is graphically represented on the display area of the user interface unit.

Abstract: The present invention relates to a system and method for locating the direction and distance to a RF signal source from an avalanche beacon to find an avalanche victim. The system and method includes a RF signal locator and a graphical display residing on the signal locator. The receiver graphical display provides the searcher with an initial way point reading that includes directional and distance data associated with the beacon RF signal source from the avalanche beacon. The directional and distance data is based upon the received RF signals. A processor within the locator receiver receives and measures RF signals emitted by the RF signal source. The locator advantageously provides continuous subsequent way point readings for the user, where the subsequent way point readings include directional and distance data associated with the RF signal source. The distance data provided by the subsequent way point readings is based upon a path loss slope of the received RF signals from the avalanche beacon.

Abstract: The invention relates to a receiver in a position-finding system, having a calculation unit for calculating a statistical value from a received signal, and a detector unit for comparing the statistical value with a threshold value and for determining whether the signal is a synchronized position-finding signal. The system also includes an estimation unit for estimating the quotient of the signal-carrier power and the noise-power spectral density of the signal, and a determination unit for threshold-value determination from the estimated quotient.

Abstract: L overlapping forward subarrays with {overscore (q)}(?q) antenna elements are formed with, where q is the number of desired signals, a cyclic correlation matrix is formed from the cyclic correlations between the received signals of L forward subarrays and a received signal of the first predetermined antenna element, the cyclic correlated matrix is divided into two upper and lower submatrices, an orthogonal projection operator in the noise subspace is calculated by performing a linear operation on these two upper and lower cyclic correlation matrices, then by calculating a spatial spectrum or a polynomial by using the estimated orthogonal projection operator, the directions are estimated from of the position of q highest peaks of the spatial spectrum or the phases of q roots of the polynomial closest to the unit circle in z-plane.

Abstract: Disclosed are a mobile station unit which can obtain azimuth information with a simple construction and a radio communication system including the mobile terminal unit. According to the present invention, in a terminal station, an arrival direction obtaining section 203 obtains an arrival direction of a received azimuth designation signal from a reference station or another terminal station using an arithmetic operation or the like. A transmitting direction forming section 204 determines the direction opposite to the arrival direction obtained by the arrival direction obtaining section 203 as a transmitting direction. A reference azimuth detecting section 207 detects the transmitting direction determined by the transmitting direction forming section 204 as a reference azimuth. An azimuth designation signal generating section 205 generates an azimuth designation signal so as to radiate radio waves having directivity in the transmitting direction determined by the transmitting direction forming section 204.

Abstract: A wireless communication method and antenna system for determining the direction of arrival (DOA) of received signals in azimuth and elevation, (i.e., in three dimensions), to form a beam for transmitting and receiving signals. The system includes two antenna arrays, each having a plurality of antenna elements, two first stage multi-mode-port matrices, at least one second stage multi-mode-port matrix, an azimuth phase detector, an elevation amplitude detector, a plurality of phase shifters and a transceiver. The antenna arrays and the first stage multi-mode-port matrices form a plurality of orthogonal omni-directional modes. Each of the modes has a characteristic phase set. Two of the modes' phases are used to determine DOA in azimuth. The second stage multi-mode-port matrix forms a sum-mode and a difference-mode used to determine the DOA of the received signals in elevation. A beam is formed in the direction of the received signals by adjusting the phase shifters.

Abstract: The present invention relates to a system and method for locating the direction and distance to a RF signal source, primarily for search and rescue. The system and method includes a RF signal locator and a graphical display residing on the signal locator. The receiver graphical display provides the user with an initial way point reading that includes directional and distance data associated with the beacon RF signal source. The directional and distance data is based upon the received RF signals. A processor within the locator receiver receives and measures RF signals emitted by the RF signal source. The locator advantageously provides continuous subsequent way point readings for the user, where the subsequent way point readings include directional and distance data associated with the RF signal source. The distance data provided by the subsequent way point readings is based upon a path loss slope of the received RF signals.

Abstract: Methods and apparatus are provided for determining a direction of arrival (DOA) (46) of a Radio Frequency (RF) signal (32) transmitted by a remote unit (22) in a wireless communication system (20). The methods comprise receiving the RF signal (32) with multiple antennas (34,36,38,40,42,44) of the antenna array (26) and determining a preliminary direction of arrival (DOA) (78) for the RF signal (32) received with the multiple of antennas (34,36,38,40,42,44) of the antenna array (26). The methods also comprise selecting a coefficient (80) for the antenna array (26) based at least in part upon the preliminary DOA 978), modifying the RF signal (32) with the coefficient (80) to generate a modified RF signal (82), and determining the DOA (46) of the RF signal (32) with the modified RF signal (82).

Abstract: Disclosed are a mobile station unit which can obtain azimuth information with a simple construction and a radio communication system including the mobile terminal unit. According to the present invention, in a terminal station, an arrival direction obtaining section 203 obtains an arrival direction of a received azimuth designation signal from a reference station or another terminal station using an arithmetic operation or the like. A transmitting direction forming section 204 determines the direction opposite to the arrival direction obtained by the arrival direction obtaining section 203 as a transmitting direction. A reference azimuth detecting section 207 detects the transmitting direction determined by the transmitting direction forming section 204 as a reference azimuth. An azimuth designation signal generating section 205 generates an azimuth designation signal so as to radiate radio waves having directivity in the transmitting direction determined by the transmitting direction forming section 204.

Abstract: A method for providing a pilot with information associated with at least one region of a field of view visible to the pilot from within a cockpit without requiring a visual display. The method includes the steps of determining an eye gaze direction relative to a given frame of reference for at least one eye of the pilot, determining a reference direction relative to the given frame of reference, comparing the eye gaze direction with the reference direction, and if the eve gaze direction and the reference direction are equal to within a given degree of accuracy, generating audio output audible to the pilot and indicative of information associated with the reference direction.

Abstract: The invention relates to a navigation system for a land vehicle having a measuring arrangement for supplying position, direction and/or distance data, having a data source arrangement for supplying navigation data, having an input arrangement at least for inputting a destination, having a control arrangement at least for determining a route, and having at least one display apparatus for outputting navigation instructions. To free the driver from other actions diverting his attention from the traffic, the control arrangement determines a direction from the calculated position of the land vehicle and a stored position for a prescribed place. The display apparatus additionally displays the direction ascertained by the control arrangement.

Abstract: Systems are arranged to provide a user information which relates to objects of interest. A user may provide indication of a directional reference to a device. The device determines which objects are being addressed by searching a database containing preprogrammed information relating to objects. Information relating to objects being addressed can then be presented at a user interface. A device of the system may include a point reference, a position determining means, a input receiving means, a computer processor and database, and a user interface. Methods of the system includes the steps of indicating a direction, determining position, searching a database, and presenting information to a user.

Abstract: A solar powered GPS device for receiving GPS signals transmitted from GPS satellites in order to determine a time of day. The solar powered GPS device includes a housing that has an interior. A GPS assembly is mounted in the housing for receiving GPS signals from GPS satellites. A clock display is mounted on the housing for displaying a time of day. The clock display comprises a generally semitransparent material for allowing a light to pass through the clock display.

Abstract: A passive instantaneous microwave signal frequency identifying and angle of arrival identifying system employing a beam steering multiple element antenna coupled through a Butler matrix to a plurality of simplified Fourier transformation radio receivers wherein unit value or near unit value magnitudes of the Kernel function ⅇ - j2 ⁢   ⁢ π ⁢   ⁢ kn N in the receivers' Fourier transformations are used to elude transformation computation complexity and resulting radio receiver size and cost penalties. Limiting amplifiers, a video signal path and direction finding encoding logic are also employed. Airborne military application of the system in electronic warfare direction finding, radar frequency determination and other activities is included.