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8184040 |
Radar device and a method of detecting a target object using radar
This disclosure provides a radar device including a transmission module for sequentially transmitting two or more kinds of pulse signals having different pulse widths by a predetermined...
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8138961 |
Step frequency ISAR
A step frequency inverse synthetic aperture radar (ISAR) includes a transmitter configured to transmit a transmission pulse at a transmission frequency to a near earth object (NEO), the...
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8115672 |
Method of measuring distance, notably for short-range radar
The present invention relates to a procedure for measuring distance. It applies notably in respect of short-range radars, but not exclusively. The method uses an electromagnetic wave comprising at...
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8077074 |
Networked waveform system
Certain embodiments provide a network waveform system that can include multiple radars disposed at different geographical positions within an environment. The multiple radars may be configured to...
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8044844 |
Pulsed radar level gauge system and method for energy efficient filling level determination
The invention sets forth a method of determining a filling level of a product contained in a tank using a radar level gauge system. The steps include generating a transmission signal using first...
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8031106 |
Object ranging
A method for determining at least one of the distance to and the speed of an object is discussed. The method comprises determining an indication of whether the object is approaching or moving away...
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8026840 |
Biometric radar system and method for identifying persons and positional states of persons
A biometric radar system and method for identifying a person's positional state are generally described herein. The biometric radar may phase adjust a sequence of radar return signals received...
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8014483 |
Method of acquiring initial synchronization in impulse wireless communication and receiver
A receiver in an impulse wireless communication. The receiver (300) includes a pulse-pair correlator (304) that receives a signal (316) and divides it into two signals for paths. One of the signals...
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8009080 |
Weather radar and weather observation method
A weather radar includes an antenna unit of an active phased array system in which a plurality of antenna elements configured to transmit a radar pulse and receive a reflected pulse are arranged in...
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7965226 |
Agile beam pulse to pulse interleaved radar modes
A system and method for concurrently operating a plurality of agile beam radar modes by pulse-to-pulse interleaving groups of the radar modes. Radar modes are grouped, each radar mode being...
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7956798 |
Radar apparatus and radar picture display method
A radar apparatus having an integral ARPA function transmits at least two kinds of pulse signals, each of which has different pulselength, according to a specific transmission pattern and receives...
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7952515 |
Range gated holographic radar
Narrow virtual transmit pulses are synthesized by differencing long-duration, staggered pulse repetition interval (PRI) transmit pulses. PRI is staggered at an intermediate frequency IF. Echoes...
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7864106 |
Pulse doppler coherent radar or ultrasound detection method and system for SNR enhancement
A method and system for SNR enhancement in pulse-Doppler coherent target detection for applications in the fields of radar and ultrasound. In accordance with the method of the invention, complex...
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7852261 |
Tracking waveform selection for multi-function radar
The present invention relates to tracking waveforms in radar which minimizes the dwell time and energy in a tracking waveform while maintaining a specified track positional accuracy and...
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7800528 |
Radar level gauge with variable pulse parameters
A radar level gauge (RLG) system and method for determining a filling level of a filling material in a tank is disclosed. The RLG system comprises a transmitter for generating and transmitting an...
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7773028 |
Method and system for concatenation of radar pulses
A system and method are described for generating waveforms for use in radar and sonar systems. The system includes waveform generation circuitry a waveform generator and an up-conversion module....
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7760130 |
Method and system for presence detection
A method for presence detection using a microwave transmitter and a microwave receiver, the method including generating a sequence of clock pulses by means of a pulse generator, feeding the clock...
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7755538 |
Radar apparatus
The present invention provides a radar apparatus including: a transmission pulse group generator configured to generate: a first transmission pulse group from a first transmission pulse train...
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7750838 |
Measuring device
The invention relates to a measuring device comprising a transmitter (6) for transmitting (38, 60) a measuring signal (16) that lies within a frequency range, a sensor (8) for receiving (40, 62) an...
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7746270 |
Radar apparatus and radar tuning method
A radar apparatus transmits a pulse signal including pulses having at least two different pulselengths in a specific transmit pulse pattern and receives a returning echo signal through a single...
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7728765 |
Method and apparatus for clutter filtering staggered pulse repetition time signals
A method for clutter filtering staggered pulse repetition time data signals is provided. The method comprises the steps of receiving a plurality of staggered pulse repetition time data signals. The...
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7705766 |
Synthetic aperture radar
A method of operating synthetic aperture radar in a low PRF mode, comprising generating a stream of radar pulses, imposing onto said stream a predetermined modulation of the Pulse Repetition...
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7688257 |
Marine radar systems and methods
Marine radar systems and methods for producing low power, high resolution range profile estimates. Non-linear Frequency Modulation (NLFM) pulse compression pulses are frequency stepped to form a...
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7683825 |
Method and apparatus for measuring distance between a target and a receiver in a ranging system
A method of measuring distance between a target and a receiver in a ranging system may comprise transmitting a first pulse at a first time determined by a sampling clock in a receiver, receiving...
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7605744 |
Method for extension of unambiguous range and velocity of a weather radar
A method for extension of unambiguous range and velocity of a weather radar. To avoid pulse overlaying, the pulse repetition time of a single pulse can be extended such that any return echo will...
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7576683 |
Methods and systems for reducing interference caused by antenna leakage signals
In one aspect, a method of radar altimeter operation including a time dependent gain control is described. The method comprises triggering a Sensitivity Time Control (STC) gain control signal at a...
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7518547 |
Method and system of interference detection for radar altimeters
A method of detecting interference noise at a radar altimeter. The method comprises periodically emitting a pulse from the pulsed radar altimeter, periodically detecting a noise level in a noise...
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7466261 |
Method and system for radio detection and ranging intrusion detection system
A RADAR system including a set of RADAR apparatuses is disclosed. Each apparatus includes a processor, a pulse unit in signal communication with the processor, a waveform signal generator in signal...
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7420504 |
Method of operating a multibeam radar
A method of operating a multibeam radar carried on a platform flying a mission over a prescribed flight path to obtain images of a plurality of target areas, the beams of said radar being the...
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7327305 |
Process for the evaluation of signals in an SAR/MTI pulsed radar system
The invention relates to a process for the evaluating a received signal of an SAR/MTI pulsed radar system that transmits SAR and MTI pulses with respective definable pulse repetition frequency...
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7304604 |
Radar sensor and method for operating a radar sensor
In a radar sensor, a continuous microwave signal is passed through an RF switch which is periodically controlled by a pulse signal. The pulse signal is frequency modulated in such a way that the...
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7245252 |
Method for determining the distance between two transmitting and receiving stations
In a method for determining the distance between two transmitting and receiving stations, a transmission signal is generated in each station and is transmitted as a series of microwave pulses...
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7236120 |
Ultra-wideband detector systems for detecting moisture in building walls
A non-destructive detection method and system enables detecting a moisture patch located inside a building wall or the like. A transmitter generates a series of ultra-wideband pulses while an...
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7233279 |
Method and device for distance measurement by pulse radar
In order to provide the method and the device for distance measurement by pulse radar that securely eliminates the false echo from the distance over the detectable limit determined by the pulse...
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7215278 |
Radar frequency hopping
Apparatus and methods for adjusting or “hopping” the center frequency or the pulse repetition frequency of a radar system improve the co-locatability of multiple radars commonly located in a reg...
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7199747 |
Generating a fine time offset using a SiGe pulse generator
A method and apparatus for generating short electronic pulses using a modified differential trigger that is partly an analogue sinusoidal voltage and partly a selectable, DC voltage. The...
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7199752 |
Phased null radar
A method for reducing the interference between a source transmitting pulses and equipments having nominal bandwidths which are outside the nominal bandwidth of the transmitted pulses, but which...
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7167125 |
Pulse radar arrangement
A pulse radar system has a high-frequency source, which supplies a continuous high-frequency signal and is connected on the one side with a transmission-side pulse modulator and on the other side...
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7158077 |
Radar device and method for suppressing interference with a radar device
A radar device is described having an arrangement to generate a carrier signal having a carrier frequency fT, an arrangement to generate pulses having a pulse repetition rate fPW, an arrangement to...
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7151481 |
Method for detecting targets and determining their distance via an HPRF radar system
A method for detecting targets and determining their distance by means of an HPRF radar system including a transmitter for transmitting bursts having a preselectable number Z of transmission pulses...
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7136013 |
Radio-wave radar system and adaptive cruise control system
In a radio wave radar system using a two-frequency CW modulation method, it is possible to detect a distance between a host vehicle and a forward vehicle and to realize a stable ACC following...
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7136014 |
System and method for estimating the azimuth pointing angle of a moving monopulse antenna
An invention is provided for determining the azimuth pointing angle of a moving monopulse antenna. Pulses of energy are broadcast at the surface of a planetary body. Reflected signals are received...
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7109916 |
Device for, in particular bistatic radar applications
In a device for bistatic radar applications, at least two spaced-apart radar sensors having separate carrier-frequency oscillators are provided, which do not require phase synchronization. The...
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7095363 |
Pulse radar apparatus
A pulse radar apparatus uses different frequencies, for example, frequencies one of which is a multiple or a submultiple of the other for a signal which becomes a reference of a control pulse for...
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7081850 |
Coherent detection of ultra wideband waveforms
A general purpose system and method for transmitting and coherently detecting UWB waveforms is predicated on the formation of conjugate pair of UWB waveforms. The in-phase and conjugate quadrature...
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7064704 |
Apparatus for radar
A radar transmits electromagnetic energy in pulse repetition intervals and receives reflections from objects in range gates including Doppler filters. The radar approves desirable ambiguous echoes...
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7053818 |
Method for simple and multipurpose tracking
A method for measuring distance and relative speed between two points, one of which is stationary. The method employs a radio signal modulating a periodic pulse train sent from stationary point to...
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7053814 |
RF lightwave coding system for radar pulse compression
An apparatus for preparing a RF radar transmit waveform and for decoding RF return waveforms comprising: a RF-lightwave encoder and a decoding preprocessor to phase-encode the RF radar transmit...
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7019683 |
Shipping container security system
A security system senses intrusions into a shipping container through the opening of doors, cutting an opening, or removing the doors from their hinges. Intrusion information is transmitted to a...
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6989781 |
Short-range radar system with variable pulse duration
A short-range radar system includes short-range radar sensor means and means (41) for HF-impulse generator for the sensor means. The means for HF-impulse generation are embodied for emitting...
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