Communications: directive radio wave systems and devices (e.g., radar, radio navigation) inventions 02/06

20060038713 - Multi-sensor target system: A multi-sensor target system has a housing. A number of targets are contained in the housing. Each of the targets is detectable by a different type of sensor. A connector is coupled to each of the targets....

20060038714 - Delivery of quasi-periodic pulses of em energy utilizing the principle of beating-wave amplification: The present invention is related a method and system for irradiating a target location or material with high-amplitude narrow pulses of electromagnetic (EM) energy at a periodic or quasi-periodic rate. The method and system comprises generating at least three electromagnetic signals simultaneously in space from at least three sources, each...

20060038715 - Memory check unit for radar systems and radar system including memory check unit: Provided is a RAM check unit capable of checking a RAM included in a radar system even when the radar system is in operation. An LSI instructs a high-frequency unit to output a radar-transmitted signal. When a radar-received signal is received from the high-frequency unit, calculation is performed based on...

20060038716 - Method and device for generating a constant envelope navigation signal with four independent codes: where fc=Max(fci), and fci designates the chip rhythms fc1, fc1′, fc2, fc2′ of the navigation codes C1, C2, C1′, C2′, each fci value being such that fM=Ni.fci, Ni being an integer greater than or equal to 8, two navigation codes C1, C1′ being quadrature modulated at frequency f1=fp−fM/8, and two...

20060038717 - Positioning system, positioning terminal, information provision device, positioning method, control program for positioning system, and computer-readable recording medium for recording control program for positioning system: A positioning system that uses a positioning terminal, an information provision device, and a communication network. The information provision device is configured to perform position calculations for the positioning terminal only when the results of position calculations can be considered to be successful. Thus, a load on the information provision...

20060038718 - Azimuth/attitude detecting sensor: The sensor successively calculates a rolling angle, pitch angle and azimuth from the coordinate transformation matrix with the level error and azimuth error compensated. It calculates azimuth error compensatory values using the GPS direction signal and calculates a difference between the GPS direction signal and magnetic azimuth signal under a...

20060038719 - Aided location communication system: An Aided Location Communication System (“ALCS”) is described that may include a geolocation server and a wireless communication device having a GPS section where the GPS receiver section is capable of being selectively switched between a standalone mode and at least one other mode for determining a geolocation of the...

20060038720 - Wireless assisted recovery systems and methods: Systems and methods for assisted recovery. An example method receives at least one of a directional or pitch command signal. Localizer or glide slope signals are generated based on the received signal. The localizer or glide slope signals are wirelessly transmitted via a predefined frequency over a transmitter and received...

20060033654 - Method and apparatus for detection of an electromagnetic signal reflected by an object: For detection of an electromagnetic signal, which is transmitted from a transmitting antenna (2), by means of at least two at least essentially identical receiving antennas (3, 4), whose sensitivity curve has a maximum (M) with falling flanks as well as sidelobes (SL) adjacent to it with sensitivity increased again...

20060033655 - Method of calibrating a microwave source: he calibration circuit is opened at the source to be calibrated; the test signal is injected on the injection channel; the phase φf and the amplitude Af of the signal present on the measurement channel is measured; a corrected phase value φc is determined, this corrected phase being the phase...

20060033656 - System and method for adaptive broadcast radar system: An adaptive broadcast radar system for tracking targets is disclosed. The radar system includes a transmitter having sub-apertures and a receiver having sub-apertures. The transmitter sub-apertures generate and code a signal waveform. The signal waveform is coded with data about the transmitter, including the degrees of freedom. The receiver receives...

20060033657 - Method and system for circular polarization correction for independently moving gnss antennas: A system and method for compensating for changes in relative antenna attitude in a single-receiver position detection system, such as a differential carrier phase GPS system, utilizes sensor input to detect changes in the relative attitude of at least two antennas or an antenna positioner, such as an motorized actuator...

20060033658 - Apparatus, methods and computer program products for gps signal acquisition using an adaptive search engine: A GPS receiver includes a digital signal processor (DSP) configured to receive a carrier-modulated signal and to provide an adaptive GPS search engine operative to search the carrier-modulated signal for GPS signals over a variable number of carrier timing hypotheses. A mobile terminal includes a mobile communications transceiver, a GPS...

20060033659 - Mobile satcom antenna discrimination enhancement: An antenna array especially for use on mobile platforms, which provides the spatial discrimination in selected directions required for such antennas. The shape of the radiation pattern of the antenna array is modified dynamically, such that the gain in the direction of other sources is sufficiently low to meet the...

20060033660 - Method and system for time difference of arrival (tdoa) location services: A method and system for determining the location of a mobile transmitting device that uses three dimensional location coordinates to triangulate the location using a time difference of arrival method, with diminishing errors, error correction and which takes advantage of global positioning systems without the requirement of highly accurate clocks...

20060033661 - Method and apparatus for location determination: A location determination device (104) is worn on a user's head to facilitate searching and tracking for another individual carrying a portable radio (102) as well as locating exit routes. At least two antennas (108), a monopulse receiver (110) and a display are integrated into the location determination device (104)....

20060033662 - Location system: A portable location device for use in a location system, the device comprising a transmitter for transmitting ultra-wideband signals, a receiver for receiving non-ultra-wideband signals and a control unit coupled to the receiver for controlling the operation of the device in dependence on the received non-ultra-wideband signals....

20060028369 - Suppressing motion interference in a radar detection system: One preferred embodiment of the present invention provides a system and method for suppressing motion interference in a radar detection system. Briefly described, in architecture, one embodiment of the system, among others, can be implemented as follows. The system includes a signal generator that transmits microwave signals toward a target...

20060028370 - Motion compensation for convolutional sar algorithms: A synthetic aperture image of a scene is acquired using a radar system. The scene has one or more radar scatterers located on a horizontal flat {circumflex over (x)},ŷ plane. The radar system is mounted on a moving platform moving at an angle θtilt with respect to the {circumflex over...

20060028371 - Conformal range migration algorithm (crma) \"karma\": Motion compensation for coherent combination of pulses facilitates a SAR image of a scene on earth's surface. A great circle (406) is centered with respect to the earth's center, The great circle (406) has an axis (412) perpendicular to a first plane. Axis (412) passes through the earth's center. The...

20060028372 - Mensuration for the conformal range migration algorithm: A radar system is mounted on a moving platform moving along a great circle. The radar comprises a radar receiver for digitizing radar returns having a phase from a scatterer (target) in a scene. A computer focuses the phase of the radar returns from the scatterer in the scene, using...

20060028373 - System and method for active protection of a resource: An active protection system comprising an ultrawideband radar for threat detection, an optical tracker for precision threat position measurement, and a high powered laser for threat kill or mitigation. The uwb radar may use a sparse array antenna and may also utilize Doppler radar information. The high powered laser may...

20060028374 - System and method for ultra wideband subarray beam steering: An active protection system comprising an ultra wideband (UWB) radar for threat detection, an optical tracker for precision threat position measurement, and a high powered laser for threat kill or mitigation. The UWB radar may use a sparse array antenna and may also utilize Doppler radar information. The high powered...

20060028375 - Radar apparatus: In an FM-CW radar apparatus which determines the azimuth to a target by a phase monopulse technique, an abnormal value resulting from the presence of multiple targets is detected. Three receiving antennas are arranged at spacings of 5λ/4 and 6λ/4, respectively, and it is determined whether the difference between the...

20060028376 - Radar protection device for wireless networks: A method for radar protection. The method includes recording energy events and calculating differences in recorded energy events to determine pulses. The method further includes sorting intervals between pulses into histogram bins, each bin representing a range of time intervals between two pulses, each pulse indicative of a radar frequency...

20060028377 - Method and apparatus for adjusting a measurement cycle in a satellite positioning system signal receiver: Method and apparatus for adjusting a measurement cycle in a satellite signal receiver is described. In one example, a notification is received at the satellite signal receiver that is indicative of at least one of a route-critical event and a motion-change event. A frequency of the measurement cycle is automatically...

20060022866 - Vehicle obstacle warning radar: The present invention is a radar system for detecting the presence of obstacles. The radar system includes at least one transmitting antenna and at least one receiving antenna. The transmitting antenna receives an input signal and transmits an electromagnetic wave. The electromagnetic wave reflects off an obstacle back to the...

20060022867 - Asset tracking method: The present invention relates to a system for managing assets such as vehicles and/or equipment in an area such as a repair yard or parking lot. A plurality of mobile devices periodically wake-up at different times and transmit their uncorrected GPS location data to one or more fixed local devices....

20060022868 - Satellite signal reception processing apparatus and satellite signal reception processing method: The present invention provides a satellite-signal reception-processing apparatus for receiving signals, which each have completed a spectrum-spreading process using a spreading code, from a plurality of artificial satellites. Then, on the basis of the received signals, the apparatus computes its own position and velocity. The apparatus includes a position-computation satellite...

20060022869 - Analog decorrelation of ranging signals: In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread spectrum signals. A down converter connected with an antenna may be spaced away from other portions of the receiver. The down converter down...

20060022872 - Asynchronous local position determination system and method: In a local positioning system, the land-based transmitters include free running oscillators or oscillators free of clock synchronization with any remote oscillator. A reference receiver receives the ranging signals from different transmitters and generates timing offset information, such as code phase measurements. The timing offset information is then communicated back...

20060022870 - Land-based local ranging signal methods and systems: To provide sub-meter accuracy in a local positioning system, ranging signals with a high modulation rate of code, such as 30 MHz, or more are transmitted. Code phase measurements may be used to obtain the accuracy without requiring relative motion or real time kinematic processing. The ISM or X-band is...

20060022871 - Land-based transmitter position determination: In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread spectrum signals. A down converter connected with an antenna may be spaced away from other portions of the receiver. The down converter down...

20060022873 - Synchronizing ranging signals in an asynchronous ranging or position system: In a local positioning system, the land-based transmitters include free running oscillators or oscillators free of clock synchronization with any remote oscillator. A reference receiver receives the ranging signals from different transmitters and generates timing offset information, such as code phase measurements. The timing offset information is then communicated back...