Matches 1 - 35 out of 35
Match Document Document Title
7619554 Passive radar utilizing space-borne digital electromagnetic illuminators  
In a passive radar system a space-borne transmitter broadcasts wide-band digitally modulated signals over a region and illuminates the region. A receiver antenna is oriented to receive radiation...
7586434 Method and system for mapping a target scene using scanning radar  
A system and method for mapping a target scene by means of scanning radar utilizing the Doppler effect that arises in the event of movement between radar and target scene, where the movement of a...
7537181 Guidance system  
There is provided a guidance system for allowing an air vehicle to guide a moving object, comprising a Synthetic Aperture Radar located on the air vehicle, and a means of communication for allowing...
7498968 Synthetic aperture design for increased SAR image rate  
High resolution SAR images of a target scene at near video rates can be produced by using overlapped, but nevertheless, full-size synthetic apertures. The SAR images, which respectively correspond...
7456780 Method and system for developing and using an image reconstruction algorithm for detecting and imaging moving targets  
Image reconstruction approaches that use standard Cartesian-sampled, frequency-domain SAR data, which can be collected by a platform with a single radar antenna, together with its associated...
7411540 Synthetic aperture radar (SAR) data compression  
A method of compressing phase history (PH) data includes (a) dividing PH data into multiple sub-apertures; (b) transforming the sub-apertures into multiple coarse resolution images; and (c)...
7369083 Method for performing bistatic radar functions  
A bistatic radar system having a transmitter that generates unique signals at spatially independent transmitter degrees of freedom and a receiver that filters the signal at each receiver degree of...
7333046 System and method for monitoring targets  
A system comprising a moving radar, a processing device, and a phase difference determination device is used to monitor a target. The moving radar has first and second phase centers that transmit...
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...
7245250 Synthetic aperture radar image compression  
A method is disclosed of generating multi-resolution images using synthetic aperture radar (SAR) phase history data. A high resolution SAR image may be formed from the phase history data, or a...
7205927 Technique for low grazing angle 3D SAR target recognition  
A radar on a moving platform for three dimensional target recognition of a target on a flat or sloping terrain is described. The target is illuminated from a plurality of locations to generate...
7109911 Dual synthetic aperture radar system  
The dual synthetic aperture array system processes returns from the receiving arrays. The two identical receiving arrays employing displaced phase center antenna techniques subtract the...
7106243 Technique for enhanced quality high resolution 2D imaging of ground moving targets  
A radar receiver on a moving platform images a moving target and non-moving clutter using a single SAR array. The radar receiver converts the radar returns into digital radar returns and motion...
7095358 Technique for cancellation of elevated clutter for the detection of fixed and ground moving targets under trees  
A target is detected under a forest canopy or other elevated clutter where the target is obscured by the elevated clutter. Radar returns reflected from the target on the surface, combined with...
6952178 Method of detecting moving objects and estimating their velocity and position in SAR images  
A method of detecting moving objects and of estimating their velocity and position in SAR images includes the steps of generating a sequence of single-look SAR images which have the same...
6943724 Identification and tracking of moving objects in detected synthetic aperture imagery  
A method of tracking a moving object in an image created by use of a synthetic aperture includes identifying a plurality of receive phase centers for an image collector, obtaining a synthetic...
6911933 Dynamic logic algorithm used for detecting slow-moving or concealed targets in synthetic aperture radar (SAR) images  
The present invention includes an application of a dynamic logic algorithm to detect slow moving targets. Show moving targets are going to be moving in the range from 0-5 mph. This could encompass...
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...
5959566 Method and system for detecting moving objects using a synthetic aperture radar system  
A method and system for detecting moving objects using azimuth streaks in synthetic aperture radar (SAR) image data are disclosed. The method and system of the present invention are directed to...
5805099 Synthetic aperture radar and target image production method  
A synthetic aperture radar apparatus which analyzes Doppler frequency displacements arising from a range direction motion component of a target and motion components of a flying body to produce a...
5539408 Method for the detection, localization and velocity determination of moving targets from raw radar data from a coherent, single- or multi-channel image system carried along in a vehicle  
In a method for the detection, localization and velocity determination of moving targets from raw radar data from a coherent, single- or multi-channel image system (SAR), for representing the...
5343203 Doppler tracking method for object imaging from radar returns  
A method of tracking an object in the Doppler dimension that provides for improved imaging. The method tracks the centroid of the object's Doppler and smooths out noisy estimates of its phase...
5323162 Synthetic aperture radar system  
A synthetic aperture radar system is mounted in a moving platform. The synthetic aperture radar system includes a multi-beam antenna having a plurality of reception beams different in direction...
5289189 Track handover between regions within a surveillance area  
A method of reducing tracking errors in an area comprised of touching surveillance regions which involves; transmitting a plurality of signals into a region, receiving signals scattered from the...
5160932 Over-the-horizon synthetic aperture radar  
An over-the-horizon, synthetic aperture radar (OTHSAR) system (10) is disclosed. The OTHSAR system is used to locate moving objects (14) at long distances in response to modulated high-frequency...
5122803 Moving target imaging synthetic aperture radar  
A method and apparatus of imaging moving targets with an aircraft mounted complex radar system has a plurality of independent, but synchronized synthetic aperture radars (SARs) positioned on the...
H000955 Aircraft attitude rate estimating device  
An Inverse Synthetic Aperture Radar (ISAR) imaging system provides an image of an incoming aircraft for the purpose of deciding which retaliatory tactic, if any, will be employed. By estimating...
4549184 Moving target ordnance control  
In an airborne radar system, moving ground targets are identified on a cathode ray tube (CRT) display and their motion tracked to allow precise delivery of air-to-ground weapons. Target location...
4150376 Side-looking radar systems  
The invention provides a side-looking radar for use on a moving carrier and for exploring space laterally with respect to the displacement direction of the carrier. The receiver includes a...
4086590 Method and apparatus for improving the slowly moving target detection capability of an AMTI synthetic aperture radar  
Detection of slowly moving and stationary targets that are normally obscured by ground clutter is accomplished by an AMTI synthetic aperture radar system that utilizes multiple receiving antennas...
3993994 Adaptive clutter cancellation for synthetic aperture AMTI radar  
Clutter cancellation between adjacent channels of a multichannel synthetic aperture AMTI radar is accomplished by delaying signals from the forward channel to coincide with signals from the aft...
3975734 Synthetic aperture radars including moving target indication  
There is disclosed a synthetic aperture radar arranged to survey a region from a mobile location. Radar pulses are transmitted in sets, the pulses from each set being transmitted from congruent...
3787840 RADAR MOVING TARGET PROCESSING METHOD AND APPARATUS  
A method and apparatus of processing side looking radar data to detect moving targets in a high clutter environment independent of the direction of the motion of the target. The radar phase history...
3735400 AMTI RADAR CLUTTER CANCELLING METHOD AND APPARATUS  
The locating and tracking of moving targets in ground clutter is accomplished by an airborne synthetic aperture radar system. Radar doppler echo signals are received simultaneously on three...
3603992 DUAL HARMONIC FREQUENCY SYNTHETIC APERTURE RADAR  
A dual harmonic frequency synthetic aperture radar system in which synthetic aperture processing is used to achieve high angular resolution for two radars which operate at two or more harmonically...
Matches 1 - 35 out of 35