Matches 1 - 50 out of 115 1 2 3 >


Match Document Document Title
8868324 Relative vehicular positioning using vehicular communications  
The relative position of one vehicle vs. another vehicle, both driving in a vehicular environment, is determined using vehicular communications based on the IEEE 802.11 standard. The relative...
8823578 Driving assist apparatus  
A driving assist apparatus for a vehicle is disclosed. The driving assist apparatus includes a transmitter for transmitting a transmission wave, a receiver for receiving a reflected wave, an...
8803730 Radar pulse detection using a digital radar receiver  
A system, method, and apparatus for radar pulse detection using a digital radar receiver are disclosed herein. In electronic warfare (EW), radars operate in an environment with highly dense...
8754796 D/A conversion circuit and semiconductor device  
A D/A conversion circuit in accordance with the present invention, which is provided with a switch swD, allows a writing operation of a voltage (a true gradation voltage) to be performed at a...
8730092 Multistatic target detection and geolocation  
Aspects of this invention are directed to the substantially improved detection and geolocation accuracy of targets (stationary or moving) by using the coherent data received at multiple airborne...
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS  
A system includes a first clock module, a global positioning system (GPS) module, a phase-locked loop (PLL) module, a cellular transceiver, and a baseband module. The first clock module generates...
8682821 Method for detection of movement of a specific type of object or animal based on radar signals  
A method of detecting movement includes using a radar sensor to monitor a space, and receiving an output signal from the radar sensor. A Fourier transform is performed on the output signal to...
8645053 Relative vehicular positioning using vehicular communications  
The relative position of one vehicle vs. another vehicle, both driving in a vehicular environment, is determined using vehicular communications based on the IEEE 802.11 standard. The relative...
8559491 Methods and devices for determining the impulse response of propagation channels involving emitters, reflectors and sensors that are fixed or mobile  
A method for measuring certain parameters of the impulse response of a propagation channel involving emitters and reflectors that are fixed or mobile, and for detecting and determining the...
8532600 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS  
A system includes a first clock module, a global positioning system (GPS) module, a phase-locked loop (PLL) module, a cellular transceiver, and a baseband module. The first clock module generates...
8301098 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS  
A system comprises a first clock module configured to generate a first clock reference that is not corrected using automatic frequency correction (AFC). A global position system (GPS) module is...
8170135 Methods and apparatus for emitter detection  
A method is provided for coordinating detection of emitted signals by a receiver with transmission of signals by a transmitter, wherein the receiver and the transmitter are located on the same...
8116968 Method for identification of traffic lane boundary  
The invention provides a method for identification of traffic lane boundary. Firstly the microwave signal is received, and the noise reduction is treated for the microwave signal. Then the...
8116408 Gain control for reduced interframe spacing (RIFS)  
A method and apparatus is disclosed to recover at least one information payload from a frame and/or to configure one or more reception parameters to receive a future frame to support RIFS. A...
8098193 Digitally controlled UWB millimeter wave radar  
An ultra wide band (UWB) millimeter (mm) wave radar system includes a signal source having a control input, a GHz signal output and a frequency controlled output. A control loop is coupled between...
7994963 High-sensitivity subsurface sensing system  
A target is sensed by an antenna array having a transmitter antenna and a receiver antenna, both of which are caused to be electromagnetically coupled to the target. The antenna array is rotated,...
7750833 D/A conversion circuit and semiconductor device  
A D/A conversion circuit in accordance with the present invention, which is provided with a switch swD, allows a writing operation of a voltage (a true gradation voltage) to be performed at a...
7583224 Radar apparatus with automatic local oscillator tuning function  
The portion corresponding to a main bang signal leaking from a transmission/reception switching unit is extracted as a frequency estimation signal from an IF signal from a mixer in a signal...
7579976 Systems and methods for discriminating signals in a multi-band detector  
A radar detector is operated to suppress nuisance radar alerts by identifying a first signal in radar band of interest, e.g., having a frequency that is a harmonic of a first nuisance local...
7411535 D/A conversion circuit and semiconductor device  
A D/A conversion circuit in accordance with the present invention, which is provided with a switch swD, allows a writing operation of a voltage (a true gradation voltage) to be performed at a...
7379013 Detecting objects within a near-field of a frequency modulated continuous wave (FMCW) radar system  
The present disclosure relates to a radar device and technique for detecting the presence of objects located in the near-field of a frequency modulated, continuous wave (FMCW) radar device. The...
7193555 System and method for detecting emitter signals in the presence of unwanted signals  
A method for receiving at least one signal emitted by at least one emitter includes defining a first dwell associated with a first signal. The first dwell has a frequency range that overlaps at...
7176826 System and method for detection of emitter signals using multiple intercept rules  
A system and method is provided for detecting emitter signals and for determining a scan strategy for a receiver system that receives such emitter signals. A rule-based system is provided for...
7068209 System and method for detecting and jamming emitter signals  
A system and method is provided for detecting emitter signals and for determining a scan strategy for a receiver system that receives such emitter signals. In one embodiment, the scan strategy may...
7019684 Phase lock loop circuitry  
An arrangement for reducing the effect of vibration-induced changes in phase of the first local oscillator in a tracking receiver wherein final detection is accomplished by a synchronous detector...
6995705 System and method for doppler track correlation for debris tracking  
The present invention is directed to a system and method for Doppler track correlation for debris tracking in PCL radar applications. The disclosed embodiments describe the systems and methods...
6831592 Near-vertical incidence HF radar  
An HF radar system comprises a transmitting system, a receiving system, a signal processing system and a frequency management/ionospheric sounding system. The transmitting system comprises a...
6801155 Method and apparatus for recognising a radar target  
A method of recognizing a radar target comprises producing a sequence of Doppler spectra of radar returns form a scene and producing therefrom a sequence of Doppler feature vectors for a target in...
6753803 Signal detection  
A transmitted signal and a received signal are combined and the combination is expected to determine whether or not a target signal is present. Either the transmitted signal or the received signal...
6691031 Method and apparatus for substituting sensor data for satellite signal in GPS receiver  
Embodiments of the present invention are directed to a method and apparatus for substituting temperature sensor data for a satellite signal in a GPS receiver. In one embodiment of the present...
6653974 Method for clearly determining the intermediate frequency difference in a frequency-controlled radar system  
In a method for the determination of the unambiguous range for the measurement of the IF deviation in a frequency-regulated radar system, a frequency adjustment or tuning of the radar system is...
6650271 Signal receiver having adaptive interfering signal cancellation  
A radar system receiver having an antenna system adapted to receive a jammer signal from both a direct path and from an indirect path. The direct and indirect paths have both differential Doppler...
6618001 Apparatus for detecting signal  
A radar signal detecting apparatus is provided. The radar signal detecting apparatus includes a coupler diverging a part of signal from received signal, a local oscillator outputting local signal,...
6486826 Arrangement for the precise distance measuring, in particular the filling level measuring  
An arrangement for the precise measuring of the distance with a FMCW radar device having a frequency-variable digitally-actuated oscillator to generate a transmitting frequency which can be tuned...
6411199 Radio frequency identification system  
A radio frequency identification system includes a transponder and a transponder reader. The transponder, responsive to an interrogation signal continuously transmitted by the transponder reader,...
6297764 Radar receiver having matched filter processing  
An electronic counter-measure receiver can be colocated with a threat simulator radar, which transmits a radar signal. As a pulsed-Doppler signal, this transmitted radar signal is sampled as a...
6295017 Jammer detection and tracking system  
A radar receiver adapted to detect and track a narrow band jammer is shown to include logic circuitry adapted successively to sense jamming signals from such a jammer to determine the extant...
6133865 CW converter circuit  
A circuit for use in anti-radar missile seekers or radar counter-measure eivers to convert the signals received from continuous wave radars into pulse signals so that the signals may be more...
6100845 Emitter location using RF carrier or PRF measurement ratios  
A method and apparatus for determining from a moving observer the location, in terms of latitude, longitude, altitude, and velocity, of a stationary or moving radar emitting a pulsed or...
6094588 Rapidly tunable, high-temperature superconductor, microwave filter apparatus and method and radar receiver employing such filter in a simplified configuration with full dynamic range  
A narrow bandwidth (1 to >100 MHz) HTS microwave filter (30 or 50) is described which is tunable over a moderate frequency range (100 to >1000 MHz at X-band). The low loss (<1 dB) and...
6091356 Chirp source with rolling frequency lock for generating linear frequency chirps  
A source for a linear homodyne transceiver that generates repeated linear chirps. A YIG oscillator with a main coil and an FM coil receives a basic linear current ramp at the main coil to generate...
6072423 Method for measuring the doppler shift in a sensor system using ambiguous codes  
The invention relates to methods which make it possible to measure the Doppler shift of the echoes of a detection system. That is, the present invention modulates the frequency of the pulses of...
5864313 Process for determining the intermediate frequency deviation in frequency pulsed radar systems  
The invention relates to a process for determining the deviation of the intermediate frequency from a given reference frequency (fR) in the case of a frequency-pulse radar system, characterized...
5654716 Circuit for short duration multiple look pulse based frequency measurement  
A low cost automatic frequency control system measures short duration radio frequencies with high a degree of accuracy within 0.5 MHz. The system is programmable to allow applicability over a wide...
5442362 Radar apparatus  
Radar apparatus provided with a signal generator (1), transmitter means (2), antenna means (3), receiver means (4), a video processor (6) and an indication device (7) for the generation of a radar...
5438332 Method of hardening transmissions, in particular between a control station and a transponder, and a device implementing the method  
To harden transmissions, in both directions, between a master station (1) and a slave station (2), a table of communication parameter values is memorized in each station and the table values are...
5355141 Channelized bearing processor  
A channelised bearing processor comprises a channelised receiver consisting of a plurality of i.f. receivers (34 to 42) covering contiguous parts of a predetermined frequency range. Each of the...
5175553 Telemetric process for measuring short distances  
A telemetric process for measuring short distances comprises emitting an electromagnetic signal modulated by a pseudo-random sequence having a number (n) of bits delivered at a clock frequency...
5059969 GPS satellite signal tracking method for GPS receivers  
A method for recapturing a satellite at the highest elevation angle as quickly as possible with a GPS receiver having a plurality of receiving channels when a state of receiving satellite signals...
5036327 Single oscillator FSK pulsed radar receiving transmitter  
An improved radar receiver transmitter uses a single oscillator frequency shift keyed system in which the oscillator shifts rapidly between a pulsed output frequency and a local frequency such...

Matches 1 - 50 out of 115 1 2 3 >