DocumentCode :
3427891
Title :
Influence and compensation of target motion on monopulse estimation in PD radar
Author :
Wang, Jun ; Guo, Peng ; Lei, Peng ; Wei, Shaoming
Author_Institution :
Sch. of Electron. & Inf. Eng., Beihang Univ., Beijing, China
fYear :
2010
fDate :
24-28 Oct. 2010
Firstpage :
2312
Lastpage :
2315
Abstract :
Pulse Doppler (PD) radar system with monopulse estimation can effectively acquire the location information of weak target, since it combines the advantages of coherent integration and monopulse technique. However, as it takes some time to realize the coherent integration, target motion will result in the decline of integration efficiency, thus affects the angle measurement precision. This paper investigates the principle of monopulse estimation in PD radar and the influence of target motion on angle measurement. A modified expression for angle measured value is presented when target has tangential motion, which can be interpreted as the midpoint angle of target motion track. Moreover, the target radial motion can be compensated by envelope interpolation method in time domain with the prior information of velocity, or by Keystone transform method in frequency domain without velocity information. Finally, the availability of the modification and compensation is verified by simulation.
Keywords :
Doppler radar; angular measurement; estimation theory; frequency-domain analysis; interpolation; motion compensation; radar imaging; radar target recognition; transforms; PD radar; angle measured value; angle measurement precision; coherent integration; envelope interpolation method; frequency domain; integration efficiency; keystone transform method; midpoint angle; monopulse estimation; monopulse technique; pulse Doppler radar system; tangential motion; target motion compensation; target motion track; target radial motion; time domain; velocity information; Estimation; Interpolation; Motion measurement; Radar cross section; Signal to noise ratio; Transforms; coherent integration; monopulse estimation; motion compensation; pulse Doppler (PD);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing (ICSP), 2010 IEEE 10th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5897-4
Type :
conf
DOI :
10.1109/ICOSP.2010.5657158
Filename :
5657158
Link To Document :
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