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| Number | Title | Issue Date |
| 7426386 | Beam laydown for hopped satellite downlink with adaptable duty cycle A power gated variable hop cycle beam laydown (700) manifests itself as first cells (C, D) supported by a first hop cycle, second cells (G, H) supported by a second hop cycle, and transition cells (E, F) supported by a transition hop cycle. The transition hop... | 09/16/2008 |
| 7372395 | Ground-speed measuring apparatus This invention provides a ground-speed measuring apparatus for a vehicle that can detect a velocity along the movement of the vehicle (in the fore direction), a velocity across the movement of the vehicle (in the athwartships direction), a side-skid angle of the veh... | 05/13/2008 |
| 7352320 | FM-CW radar An FM-CW radar includes a transmitting section, a mixing section, an A/D conversion section, a storage unit, and a signal processing section. The transmitting section transmits a continuous wave frequency-modulated with a triangular wave. The mixing section mixes th... | 04/01/2008 |
| 7310061 | Velocity sensor and ground vehicle velocity sensor using the same There is provided a highly accurate velocity sensor having a reduced detection error. A sensor circuit unit generates an electromagnetic wave and emits it from a transmission antenna. Furthermore, a reception antenna receives a reflection wave from the ground and a ... | 12/18/2007 |
| 7295154 | Vehicle obstacle warning radar A method for detecting an object using a transmitting antenna and an array of receiving antennas. The method comprises the step of transmitting a signal from the transmitting antenna. The magnitude and phase of a respective received signal at each of the receiving a... | 11/13/2007 |
| 7295147 | Sensor arrangement and method for regulating the distance of motor vehicles A sensor system on motor vehicles for locating objects in front of the vehicle, wherein at least two sensors, each having a locating depth of at least 50 m, are arranged in such a way on both sides of longitudinal center axis of the vehicle that their locating angul... | 11/13/2007 |
| 7289058 | Radar apparatus The present invention relates to a radar apparatus that forms multiple digital beams based on reflected waves of a transmitted radio wave. A transmit signal is transmitted in a predetermined cycle from one of transmitting/receiving antennas A1 to A4 ar... | 10/30/2007 |
| 7248208 | Methods and systems for maintaining a position during hovering operations A method for maintaining a position of a hovering vehicle that incorporates a radar altimeter is described. The method includes receiving signals at the radar altimeter based on a change of horizontal direction, operating the radar altimeter to generate a Doppler fr... | 07/24/2007 |
| 7221318 | System and method for controlling antenna pattern A communication system and method for controlling an antenna pattern is disclosed. The communication system may be situated on a mobile station, a base station, or a combination thereof. The communication system comprises a smart antenna module, a speed sensor, and ... | 05/22/2007 |
| 7218271 | System and method for determining patrol speed A system for processing vehicle speed data for a vehicle is provided. The system includes a front antenna assembly of the vehicle generating a front digital signal, and a rear antenna assembly of the vehicle generating a rear digital signal. A fast Fourier transform... | 05/15/2007 |
| 7218268 | Self-calibrating interferometric synthetic aperture radar altimeter A synthetic aperture radar system uses RF bandwidth and Doppler beam sharpening principles to develop fine altitude and along-track resolutions. To achieve accurate cross-track position measurements the system and method exploit a combination of modes based on a nov... | 05/15/2007 |
| 7218279 | Method and apparatus for pointing the beam of a wind profiler The present invention relates to a method and apparatus for pointing the beams (63–67) of a wind profiler comprising a stationary antenna matrix (61) with several individual antenna elements (62). According to the method an input signal is fed... | 05/15/2007 |
| 7196657 | Radar system using RF noise A radar system that utilizes predetermined, pseudorandom, or random waveforms that may be substantially matched to the impulse response of the radar and any surrounding clutter such that the signal-to-clutter ratio may be optimized and/or such that specific targets ... | 03/27/2007 |
| 7151479 | Radar sensor for motor vehicles Radar sensor for motor vehicles, having a transmitter and receiver unit whose directional characteristic has multiple lobes, at least one of which is directed parallel to the roadway surface, at least one other lobe being directed obliquely to the roadway surface. | 12/19/2006 |
| 7136736 | Vehicular travel control device In a vehicular control device, it is necessary to measure or calculate six physical quantities-forward-reverse speed, left-right speed, vertical speed, pitch angle, roll angle, and angle of sideslip-representing vehicular movement and to control the braking force of... | 11/14/2006 |
| 6980153 | Radar altimeter for helicopter load carrying operations A radar altimeter for vehicles that operate with a load suspended underneath is described. The radar altimeter includes a transmitter configured to transmit radar signals toward the ground, a receiver configured to receive reflected radar signals from the ground and... | 12/27/2005 |
| 6703966 | Method and device for measuring the speed of a moving object To measure the absolute speed of a body 100 moving relative to the ground 33 using an onboard speed sensor 1, a radar wave is transmitted towards the ground by an antenna with a wide aperture angle. The wave reflected by a reflecting obstacle on the groun... | 03/09/2004 |
| 6577267 | Device and method for contactlessly measuring speed on surfaces A device for non-contractual measurement of the speed of an object moving over a surface comprises a means for radiating a signal of fixed frequency at an angle onto the surface in or against the direction of motion, said angle being variable by the movem... | 06/10/2003 |
| 6476760 | Device for detecting angle of elevation error in a multiple beam radar sensor A method and a radar sensor for determining an elevation angle error of a multibeam radar sensor are described. In order to detect an elevation angle of the multibeam radar system with respect to a predefined target, a plurality of laterally arranged cutt... | 11/05/2002 |
| 6396437 | Radar multibeam velocity sensor A microstrip antenna radiates and receives six beams in sequence out of a common aperture and processes return signals with common electronics in order to measure the velocity components relating to a backscattering surface. Sequentially, the first four b... | 05/28/2002 |
| 6335700 | Radar apparatus for preventing erroneous detection by comparing sensitivities of each combination of transmitting and receiving units A radar apparatus for preventing a problem due to an abnormal state such as degradation of a transmitting or receiving unit. The apparatus includes a transmitting section including beam transmitting units for radiating a plurality of beams, where adjacent... | 01/01/2002 |
| 6239738 | Signal processing method in a motor vehicle radar system and radar system therefor A signal-processing method for a motor-vehicle radar arrangement is specified, which method provides more extensive information on the traffic situation in observation direction by evaluating echo signals deflected at the road surface.... | 05/29/2001 |
| 6137437 | Spaceborne scatterometer A scatterometer orbiting around the earth globe comprises a single fanbeam radar antenna which is rotated around a vertical axis, at a slow rotation rate. The antenna foot-print sweeps a circular disc. The slow conical sweep combined with the motion of th... | 10/24/2000 |
| 6072425 | Terrain bias compensator for doppler navigation systems A terrain bias compensator for a Doppler navigation system utilizes an auxiliary beam with each beam of the Doppler system to form Doppler beam pairs. The axis of the auxiliary beam is slightly offset from the axis of the main beam and is positioned so th... | 06/06/2000 |
| 5923281 | Terrain bias compensator for doppler navigation systems A terrain bias compensator for a Doppler navigation system utilizes an auxiliary beam with each beam of the Doppler system to form Doppler beam pairs. The axis of the auxiliary beam is slightly offset from the axis of the main beam and is positioned so th... | 07/13/1999 |
| 5708438 | Angular velocity calculating apparatus for navigation apparatus An angular velocity calculating apparatus which is low-priced and capable of obtaining an angular velocity with high accuracy is realized. Two velocity detectors which are substantially small in offset error, noise, or the like, unlike the conventionally ... | 01/13/1998 |
| 5621413 | Vehicle-ground surface measurement system A measurement device (103) and method determines various metrics between a vehicle (101) and a ground surface (105) using a transmitter-antenna (109) for emitting energy including a portion directed down toward the ground surface. A receiving antenna (115... | 04/15/1997 |
| 5579010 | Multibeam radar system A multibeam radar system. A matrix or inverse matrix indicating the characteristics of beams of ultrasonic waves or radio waves are previously created for each individual scanning direction (channel) and stored in a memory. Physical quantities correspondi... | 11/26/1996 |
| 5579012 | Speed detecting apparatus A speed detecting apparatus mounted on an object moving on the ground detects a Doppler frequency for computing a moving speed thereof by receiving reflection waves of a microwave signal or a millimeter wave transmitted to the ground. The apparatus compri... | 11/26/1996 |
| 5481268 | Doppler radar system for automotive vehicles A continuous wave Doppler radar system having a transmitter module and a receiver module is provided for automotive vehicles. Each module includes an antenna system, including a horn, a lens, and a waveguide system, which is attached to a monolithic micro... | 01/02/1996 |
| 5264852 | Satellite equipment for measuring the backscatter coefficient of the sea Satellite radar apparatus measures the backscatter coefficient of the sea to determine the speeds and directions of winds at sea. The apparatus implements three aiming directions per swath with the track thereof on the Earth being parallel. The radar tech... | 11/23/1993 |
| 5204682 | Doppler radar speed sensor A Doppler radar speed sensor for a land vehicle comprises a radar transmitter/receiver circuit (1) coupled to an aerial system (2). R.F. energy from a source (3) is transmitted by the aerial system in forward (9) and backward (10) directions and energy re... | 04/20/1993 |
| 5109230 | Method for aircraft velocity error detection with a Doppler radar A method for preventing errors in the Doppler radar measurement of velocity in aircraft that result from the radar receiver being locked to backscatter from side lobes of a plurality of main lobes radiated in a fixed radiation geometry. The inertial verti... | 04/28/1992 |
| 4980633 | Method and apparatus for measuring a vehicle's own speed by the Doppler radar principle A method for measuring a vehicle's own speed by the Doppler radar principle, in accordance with which microwaves of a transmission frequency are sent out by the vehicle, a part thereof being reflected back and mixed with the microwave signal at transmissi... | 12/25/1990 |
| 4922255 | Arrangement for measuring speeds An arrangement for measuring speeds between a first and a second object with the aid of microwave signals and including a microwave generator which is connected to a transmitter antenna, and two receiver antennae which are preferably placed on respective ... | 05/01/1990 |
| 4920345 | Device operating on the doppler principle to determine the distance traveled by a vehicle Contactless measurement of the distance traveled by a vehicle during selected time intervals is provided by a device operating on the Doppler principle. The device has a "phase-locked loop" circuit which generates pulse signals having a frequency proporti... | 04/24/1990 |
| 4845506 | Antenna system A side-looking array antenna system is disclosed in which the inclination angle of the antenna main beam is determined depending on the intervals of a plurality of antenna elements forming an array. A switch is provided to selectively connect one of the p... | 07/04/1989 |
| 4791424 | Doppler radar kinemometer The invention concerns a Doppler radar kinemometer intended to measure the speed of a railway vehicle. According to the invention, it includes two antennas (1,2) mechanically connected to one another such that their axes form a determined angle between th... | 12/13/1988 |
| 4746923 | Gamma feed microstrip antenna A gamma feed microstrip antenna for a Doppler navigation system includes a forward firing feed parallel spaced to a backward firing feed. A plurality of parallel spaced radiating arrays are transversely connected between the feeds. Each array includes rad... | 05/24/1988 |
| 4689624 | Vehicle speedometer A vehicle speedometer is disclosed which accurately measures vehicle velocity despite significant vehicle vibration, which causes variation of the angle of incidence of the measuring wave. Two transceivers are mounted on the vehicle, along with means to d... | 08/25/1987 |
