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6900754 Signal processing method for use with scanning radar  
A method that can locate the center of a target even when the target is a large vehicle, and that, when a plurality of beams are reflected, determines whether the reflected beams are from the same...
6897768 Obstacle detecting apparatus and related communication apparatus  
A plurality of ultrasonic sensors are installed at predetermined positions of an automotive vehicle. Each sensor has the capability of performing calculation for measuring a distance between an...
6894641 Radar system mounted on vehicle  
To provide a radar system mounted on a vehicle that reliably detects the reception of the interference wave with high-performance and inexpensively. There is provided a radar system mounted on a...
6891497 Chirp-based method and apparatus for performing phase calibration across phased array antenna  
A chirp-based method and apparatus measures phase variation through a reference frequency transport cable for a phased array antenna. A chirp is injected into the a signal transport path from a...
6882304 Device for a radar system  
A device for a radar system, the device being supplied with the received signals of at least two receiving antennas as input signals, and in which the output signals of this device are supplied to...
6882845 Autonomous zone forming communication device and autonomous zone forming method  
An autonomous zone forming method of autonomously forming a zone which is a service area of a base station in a wireless communication system having the base station is provided. In the method, it...
6876324 Radar apparatus  
To provide a filter cover which has little electromagnetic effect on a dielectric resonator and is able to lengthen the life of a press mold without impairing isolation between transmission and...
6873251 Tracking system and method employing multiple overlapping sensors  
A tracking system and method of estimating position and velocity of an object are provided. The tracking system includes first and second sensors for sensing an object in first and second fields...
6873257 Vehicle location device  
A position locating device for identifying the distance and direction from a first object located with a user to a second object. The first object transmits a signal to the second object. The...
6867729 Guided wave radar level transmitter with automatic velocity compensation  
A guided wave radar transmitter comprises a probe defining a transmission line including a relatively low impedance target marker above an expected sensing region of the probe. A pulse circuit is...
6859165 Pulse radar device  
A pulse radar device includes a rectangular signal generating section for generating a rectangular signal that is a reference signal; a transmit timing voltage setting section for setting a...
6856281 Method and system for calibration of a phase-based sensing system  
Calibrating the measurement of a distance between a transceiver and an object such as a radiating element (antenna) or a target by continuously changing the wavelength (frequency) of the...
6856280 Method and radar system for determining the directional angle of radar objects  
A method for determining the directional angle of radar objects using a multibeam radar, including the steps of: (a) recording the frequency spectra of the radar echoes for a plurality of...
6850186 System for determining position and velocity of targets from signals scattered by the targets  
The present invention relates to a system for using signals scattered by targets to determine position and velocity for each of the targets and comprises a set of transmitters and receivers of...
6844843 Signal processing apparatus of radio radar  
A signal from CW radar is received, and the received power detected by the CW radar's swinging in all directions is averaged in each direction. Then, the maximum value and the minimum value of the...
6828930 System and method in a radar level gauging system  
The present invention relates to the field of radar level gauging systems, in which a level of a surface of a product stored in a container is measured. The gauging system comprises: a radar level...
6816108 Method for determining a rotational angle or a distance by evaluating phase measured values  
The invention proposes a method for determining a rotation angle or distance by evaluating a multitude of phase measurement values. By means of a linear transformation A, the phase values measured...
6816105 Vehicle surveillance system  
An algorithm for improved tracking of Air Traffic Control Radar Beacon System transponders is disclosed. The algorithm can be combined with a system that includes an interrogator which transmits...
6812824 Method and apparatus combining a tracking system and a wireless communication system  
System for tracking mobile tags. Cell controllers with multiple antenna modules generate a carrier signal which is received by the tags. Tags shift the frequency of the carrier signal, modulate an...
6812885 Radio altimeter test method and apparatus  
A method, apparatus and circuit for testing a radio altimeter is disclosed. During the test-mode operation of the altimeter, a signal processor controls a transmitter to generate a radio frequency...
6812884 Transceiver system and method utilizing nanosecond pulses  
A transceiver for short-pulse radar applications is disclosed in which a shift register or the like is used to collect return signal information in a manner to reduce the number of transmit pulses...
6806824 Apparatus and method for measuring the distance to an object  
A radar fill level measurement sensor for measuring the level of material in a container, includes a transmit/receive circuit that transmits an electromagnetic pulse, and detects reflected...
6803878 Methods and apparatus for terrain correlation  
A method for testing radar system performance is disclosed which utilizes radar data test points in a radar data file. The method includes interpolating GPS data from a flight test to provide a...
6798374 Traffic surveillance radar using ranging for accurate target identification  
Disclosed is a Doppler shifted radar apparatus for correct target identification with respect to surveillance of moving vehicles. More particularly, an improved radar detection system using two or...
6798349 Passive microwave tag identification system  
A system for identification and tracking of microwave responsive tags, the system comprising, a microwave responsive tag having a passive modulating element to uniquely backscatter directed...
6795015 Bottom reflector for a radar-based level gauge  
A bottom reflector for a radar-based level gauge, which measures a level of a liquid stored in a tank by means of transmitting a microwave signal towards the surface of the liquid from the top of...
6795014 Method and apparatus for detecting vehicle distance  
Stableness in detecting the distance to a preceding vehicle by calculating the distance to the preceding vehicle using reflected waves of a radar beam scanned at a scanning angle that is adjusted...
6791734 Method and apparatus for information modulation for impulse radios  
A method and apparatus for information modulation for impulse radios are presented in both single-tone and pulse stream configurations. The modulation techniques include combinations of amplitude...
6791488 Method and apparatus for measuring ground height  
A method and apparatus for determining the distance between an agricultural machine and a surface such as the ground, wherein at least one sensor contactlessly determines the distance between the...
6788244 Inspection device for radar absorbing materials  
The invention is a device for inspecting an assembly including a surface coating containing magnetic radar-absorbing materials on a conductive surface. In detail, the device includes a first...
6784826 Body motion tracking system  
Methods and apparatus are disclosed for measuring position and motion of a “marker” antenna (14), disposed on a subject (12) at a physical location to be tracked. Relative distance of the marker...
6778127 Drillstring radar  
A drillstring radar comprises a measurements-while-drilling instrument for mounting just behind the drill bit and downhole motor of a drill rod. The instrument includes a radar system connected to...
6772091 Determining the depth of reinforcing bars in a concrete structure using electromagnetic signals  
Ground penetrating radar (GPR) is a technique that may be used to image the inside of a structure by collecting the echoes (or reflections) resulting from electromagnetic signals such as, for...
6765523 Stationary object detection method for use with scanning radar  
A stationary object detection method for a scanning radar wherein, of peaks generated based on a radar signal reflected from a target, peaks having substantially the same frequency are grouped...
6762711 Method for detecting target objects and for determining their direction and the like for a radar device  
In a method for detecting target objects and determining their direction, range, speed and the like for a radar device, the invention provides that at least three transmitting and receiving...
6759977 Method and apparatus for radar-based level gauging  
A method for radar-based gauging of the level of a substance in a tank (13) having at least one interfering structure (16a-c), comprises the steps of: (i) transmitting a microwave signal in a...
6753804 Target vehicle identification based on the theoretical relationship between the azimuth angle and relative velocity  
A method for tracking a target vehicle through a curve in a roadway is disclosed. The method includes measuring an azimuth angle between the target vehicle and a host vehicle, calculating a...
6750804 System and method for detecting and estimating the direction of near-stationary targets in monostatic clutter using phase information  
A system and method for detecting a target. The inventive method includes the steps of receiving a complex return signal of an electromagnetic pulse having a real and an imaginary component;...
6750811 Detection of occurrence of horizontal displacement of radar axis, determination of amount of axis displacement, and correction of axis displacement  
The occurrence of an axis displacement in a horizontal direction in a vehicle-to-vehicle distance controlling radar is detected, the amount of the axis displacement is determined, and an azimuth...
6744401 Methods and apparatus for radar data processing  
A method for testing a radar system utilizing flight test radar data is described. The method includes time synchronizing measured radar data with a GPS based time marker, storing at least a...
6731235 Mispairing determination and signal processing method for FM-CW radar  
When a new target is detected, if it is determined that the distance difference between the newly detected target and the previously detected target is within a predetermined range, the difference...
6727844 Method and device for detecting objects  
A method and a device for detecting objects that has at least two near distance sensors installed on a vehicle. The at least two near distance sensors have detection ranges that overlap at least...
6720907 Method and system for detecting and determining successful interception of missiles  
A system for the detection and determination of the success of interception of incoming missiles, used in conjunction with a defense weapon system capable of identifying and tracking incoming...
6717546 Method for correcting the visual range of a distance sensor that is assembled in such a way that said sensor is offset from the center line of a motor vehicle  
A method for correction of the detection range of a distance sensor, which is installed with an eccentricity laterally offset with respect to the central axis of a motor vehicle. In order to...
6707419 Radar transmitter circuitry and techniques  
A radar transmitter includes a digital ramp generator circuit for generating a VCO control signal. The ramp generator includes a digital signal processor and a digital-to-analog converter. In one...
6700529 Radar device for automobile  
A radar device set on an automobile includes a transmitter for transmitting forward a beam of electromagnetic waves, a receiver for receiving reflected waves of the transmitted beam from a vehicle...
6697012 Altitude estimation system and method  
A system and method for detecting and tracking a target object, including the calculation of the target object's altitude, is disclosed. During the processing of signals received by a receiver,...
6693581 Device for transmitting data in a motor vehicle  
A device for data transmission in a motor vehicle and/or from a motor vehicle in its vicinity includes a first transceiver unit in or on the motor vehicle and a second transceiver unit. which is...
6690320 Time domain reflectometry measurement instrument  
A time domain reflectometry measuring instrument uses a microprocessor that provides added functionality and capabilities. The circuit electronics and probe are tested and calibrated at the...
6690917 System and method for automatic determination of azimuthal and elevation direction of directional antennas and calibration thereof  
A system and method for automatically directing a communication antenna to point to a desired wireless communication transceiver, is presented herein. The system includes a position location...