Accession Number : ADD016200

Title :   Color-Coded Radar Plan Position Indicator.

Descriptive Note : Patent, Filed 28 Jun 91, patented 5 Oct 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Temes, Clifford L ; Linde, George J

Report Date : 05 Oct 1993

Pagination or Media Count : 7

Abstract : A method to enhance target detectability on a radar plan position indicator is described which includes the receiving of coherent pulse-burst waveforms from a target so that at least one complete burst is included in each dwell of a scanning surveillance fan beam. A fast fourier transform is performed on each returned coherent burst to form Doppler channels in predetermined range cells. The largest signal of the Doppler channels in each range cell is then selected and color coded. The color coded signals are applied to a plan position indicator whereby target images are viewable. Preferably, the Doppler channels are color coded over a rainbow spectrum so that a white background is produced and target images appear as tracks on a microprocessor-based raster-type plan position indicator. A continuity test and threshold test are also utilized so that target velocity and position are determined.

Descriptors :   *PLAN POSITION INDICATORS, *PATENTS, *TARGET POSITION INDICATORS, *RADAR SCANNING, ATMOSPHERIC REFRACTION, BACKGROUND, CELLS, CHANNELS, COLORS, CONTINUITY, FANS, FAST FOURIER TRANSFORMS, IMAGES, INDICATORS, MICROPROCESSORS, PULSES, RADAR, RASTERS, RUPTURE, SCANNING, SIGNALS, SURVEILLANCE, TARGETS, TEST AND EVALUATION, TRACKS, VELOCITY, WAVEFORMS, TARGET DETECTION, COLOR CODING, RADAR IMAGES

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE