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6492934 |
Method of deriving ground speed for descending aircraft
The present invention is a method of deriving a ground speed of an aircraft on a descent along a flight path. A vertical speed signal is produced as a function of an altitude signal and a vertical...
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6489920 |
Method for detecting a vehicle traffic status and system for detecting said traffic status
From a body located at a distance above the surface of the earth, an image is recorded of a region that is located underneath the body on or above the surface of the earth and that has a diameter...
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6486825 |
Runway incursion detection and warning system
An airport runway incursion detection and warning system for monitoring ground traffic in he vicinity of a runway or taxiway of an airport. The system utilizes a microwave radar transceiver,...
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6483455 |
Device for the unambiguous measurement of the roll of a projectile and application to the correction of the path of a projectile
A device for the unambiguous measurement of the angle of roll of a projectile, comprises at least a radar equipped with means of processing and sending a signal to the casing of the projectile in...
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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...
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6473025 |
Landmine locating system
A landmine detection system comprises a ground-penetrating radar for probing the surface of the ground for landmines and other anomalies. The radar is swept back and forth across a lane while a...
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6469662 |
Procedure for the elimination of interference in a radar unit of the FMCW type
This invention concerns a procedure for the elimination of interferences, such as pulses and linear chirps, in a radar unit of the FMCW type. According to the procedure, the useable signal in the...
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6466159 |
Target detection arrangement
Radar apparatus in which output RF signals are modulated on an optical signal prior to transmission. Incoming optical echo signals are converted into RF signals using a detector. The original...
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6462698 |
Wireless communication system using surface acoustic wave (SAW) single-phase unidirectional transducer (SPUDT) techniques
SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated...
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6462705 |
Spread spectrum radar clock
A dither oscillator randomly modulates the instantaneous phase of a precision radar PRF oscillator. Radar spectral emission lines occurring at multiples of a transmit PRF oscillator are spread by...
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6462700 |
Asymmetrical multi-beam radar sensor
A multi-beam radar sensor having at least two transmitting/receiving patches, in which the patches, assigned polyrods, and/or a dielectric lens are configured so as to be asymmetrical. As a result...
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6459402 |
Method for measuring distance and position using spectrum signal, and an equipment using the method
Under a multi-path environment, the receive timing for an incoming wave of the minimum propagation delay time cannot be accurately measured in the prior art. By using the delay profile created by...
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6456226 |
Nowcast of conviction-induced turbulence using information from airborne radar
A convection induced turbulence (CIT) detection system performs a nowcast algorithm to detect CIT along the flight path of an aircraft using power returns from an airborne whether radar. Additional...
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6456225 |
Reflector circuit
A reflector circuit is provided which responds to illuminating radiation with corresponding output radiation of increased magnitude relative to the illuminating radiation, while also providing a...
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6452533 |
Vehicle periphery monitoring device
A vehicle periphery monitoring device includes a transmitting circuit 3 for generating a transmission wave, an antenna 4 installed on the periphery or in the interior of a door mirror of a...
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6448921 |
Channelized monobit electronic warfare radio receiver
An electronic warfare radio receiver of the monobit type wherein the signal processing circuitry, including a bandpass filter array, analog to digital converter circuit and Fourier transformation...
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6448922 |
Retrofit solution for the integration of ground-based weather radar images with on-board weather radar
A method of integrating ground-based radar information into an existing on-board aircraft radar system, where a radar indicator displays on-board radar images as a function of data words received...
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6441775 |
Radar device, similar device, and received data write method
While received data is stored into a video memory through coordinate conversion, the level of image data is gradually reduced simultaneously with this, by which the image of a target is...
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6441773 |
Weather radar system integrating ground-based weather radar with on-board aircraft weather radar
A radar displaying system and method for use in displaying weather radar information on a cockpit display of an aircraft receives on-board weather radar information from an on-board weather radar...
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6437726 |
Method and apparatus for determining the location of underground objects during a digging operation
A method and apparatus for determining a location of an underground object during a digging operation. The method and apparatus includes delivering a signal toward the underground object, receiving...
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6429802 |
Determining the condition of 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...
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6429801 |
Method and apparatus for precursor based radar
A method and apparatus is described for signal processing to identify an object in an environment. A precursor associated with an electromagnetic wave interacting with the object is received and a...
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6429807 |
FM-CW radar equipment
FM-CW radar equipment to solve a conventional problem of failure detection caused by the carrier level of amplitude modulation dispersing too largely to adjust to a constant level within a...
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6426720 |
System and method for directing an adaptive antenna array
A system for directing a receiving lobe of an adaptive antenna array toward an aircraft in flight includes an aircraft position vector calculator and an antenna weight vector generator. The...
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6424292 |
Radar device and the like
When the range scale has been changed, past target images which have been stored are converted to fit to a new range scale such that the past target images can be displayed in continuity on the new...
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6420994 |
Volume in space locator
Methods and apparatus for determining location information corresponding to a volume in space (VIS) that is occupied by a selected target from a remote observation platform through the process of...
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6417797 |
System for A multi-purpose portable imaging device and methods for using same
The present invention is a multi-purpose portable imaging device. The device is small enough to be hand-held or wearable and has embedded on its surface at least one sensor. These sensors may be...
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6404384 |
Method of spoke filling and spoke filling processing unit for radar scan converter
A method of spoke filling for radar scan converter and the spoke filling processing unit for the same are provided, the radar scan converter having a buffer, an overlay processor, and the spoke...
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6400312 |
Method and device for object detection
Objects of interest are detected which are below the horizon and which emit or are the cause of pressure wave fronts. By emitting radar pulses that interact with the pressure wave fronts that...
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6400304 |
Integrated GPS radar speed detection system
The combination of a global positioning satellite system (GPS) and a radar detection unit, in wireless communication with the GPU, for tracking and determining the speed of a vehicle. The system...
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6396433 |
Talking buried object detector
A spoken word-producing detector identifies objects by comparing signatures of detected objects with stored signatures of known objects. When the signatures compare, the detector produces stored...
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6392587 |
Method for monitoring data flows, specially to provide radar data for air traffic control systems, and device to implement said method
The invention relates to a method and device for monitoring data flow, specially to provide radar data for air traffic control systems. In order to detect data supply failures and to provide an...
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6384769 |
Method for measuring distances/speeds of plural targets and radar apparatus, capable of discriminating moving targets from stationary targets
The present invention discriminates between moving targets and stationary targets in order to measure distances and speeds of the targets without producing a false target. The invention transmits...
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6384773 |
Adaptive fragmentation and frequency translation of continuous spectrum waveform to make use of discontinuous unoccupied segments of communication bandwidth
Identity transform filters, such as sin(x)/x filters, are used to coherently fragment the frequency continuum of a wideband waveform, such as an ultra wideband radar signal, into a plurality of...
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6377202 |
Icing hazard avoidance system and method using dual-polarization airborne radar
An icing hazard avoidance system and method utilizes a forward-looking, single frequency, dual-polarization pulse radar system as well as temperature sensing means to determine if supercooled...
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6377206 |
Method for clutter rejection in digital imagery
A method for filtering clutter from a first digital input image is disclosed. Generally, the method includes the steps of applying at least first and second transforms to first digital image data...
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6377201 |
Radar and method therefor
A radar ( 300 ) comprises a transceiver ( 302 ) for transmitting pulses directed to a subsurface area of interest ( 102 ) and for receiving a reflected wave ( 210 ) from the subsurface area of...
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6373428 |
Self locking dual frequency clock system
Two crystal oscillators are configured as a “plug-and-play” precision transmit-receive clock system that requires no calibration during manufacture. A first crystal oscillator generates a...
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6366235 |
Radar system for motor vehicle
An automotive radar system having an oscillator is described, the oscillator generating a high-frequency signal only in intervals as a function of a control signal during operation of the radar...
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6362774 |
Cooperative radar system
A multi-faced radar system illuminates a common area of space by radiating a first signal at a first frequency from a first antenna face and a second signal at a second frequency from a second...
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6362775 |
Precision all-weather target location system
An apparatus to determine the three-dimensional location of an airborne platform relative to a target area using two separate antenna assemblies positioned on the airborne platform. The first...
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6362772 |
Transponder plot system and method
A system and method for providing remote viewing of satellite transponder plots. The system and method piovides for remote viewing of transponder plots derived from transponders located on a...
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6362906 |
Flexible optical RF receiver
An array antenna is constructed of radiators disposed upon a flexible substrate wherein a plurality of receiving circuits connect with respective ones of the radiators for conversion of RF (radio...
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6359584 |
Radar for space-borne use
Faraday Rotation causes rotation of the plane of polarization of plane polarised radiation emitted by a radar e.g. a synthetic aperture radar and, if returns polarized in orthogonal planes are...
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6356228 |
Automatic airport information transmitting apparatus
There is provided an automatic airport information transmitting apparatus comprising: airport-inside-target detecting means for detecting a target inside an airport; target judging means for...
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RE37561 |
RF signal train generator and interferoceivers
New apparatus comprise a comprises an optical fiber based RF signal train generator for storing transient RF pulses and regenerating the identical replicas for analysis. The apparatus further ...
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6342851 |
Method and arrangement for duty cycle enlargement
The duty cycle of a pulse train from a pulse radar antenna is increased by dividing the antenna aperture into sub-apertures ( 1-5 ), generating separate pulse trains from said sub-apertures ( 1-5...
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6340946 |
Method for determining storm predictability
A method and apparatus for determining the predictability of an element in a weather radar image. An image filter approximating the envelope of the organized storm radar image is applied to a pixel...
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6339394 |
Digital coherent radar
The digital coherent radar generates its transmitted waveform from a low intermediate frequency (IF) and a local oscillator (LO) by digitally generated waveforms after passing through...
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6333710 |
Method for measuring the time delay between two periodic pulse signals of the same frequency
The invention concerns a device for measuring the time delay between a first periodic pulse signal (2) and a second periodic pulse signal (5) having the same frequency as the first pulse signal...
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