Accession Number : ADA300541

Title :   Beam Motion Induced Doppler Shift of an Extended Object.

Descriptive Note : Final rept. 1 Oct 94-30 Sep 95,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEE RING

Personal Author(s) : Lee, Hung-Mou

PDF Url : ADA300541

Report Date : OCT 1995

Pagination or Media Count : 41

Abstract : A technique to synthesize radar echo on a pulse to pulse basis is introduced. It is applied to the analysis of ground reflections where an extended object is present. Since the extended object reflects the radar illumination in a regular manner from pulse to pulse, it introduces phase shifts into the echoes and makes the echoes appear to come from high speed target. The impacts of this phenomenon on the performance of systems which rely on Doppler filtering should be assessed in the future. Furthermore, since this phenomenon is expected to occur when slow moving extended objects such as sea swells are present in short ranges, it is important to take this phenomenon into consideration when weapon systems for ship self defense are deployed.

Descriptors :   *RADAR REFLECTIONS, *SHIP DEFENSE SYSTEMS, *DOPPLER EFFECT, GROUND LEVEL, SYSTEMS ENGINEERING, SYNTHESIS, WEAPON SYSTEMS, DOPPLER RADAR, ILLUMINATION, LOW VELOCITY, RADAR TARGETS, RADAR PULSES, TARGET ECHOES, RADIOFREQUENCY FILTERS, PHASE SHIFT, GRAZING ANGLES.

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE