Title :
Range Migration Compensation and Doppler Ambiguity Resolution by Keystone Transform
Author :
Li, Yang ; Zeng, Tao ; Long, Teng ; Wang, Zheng
Author_Institution :
Dept. of Electron. Eng., Beijing Inst. of Technol.
Abstract :
In pulsed Doppler radar, when wideband signals are used and the target radial velocity is high, linear range migration occurs and cannot be neglected. The migration misaligns the range profiles within a coherent processing interval and degrades the coherent integration gain eventually. On the other hand, Doppler ambiguity must be resolved when the radar uses low or medium pulse repetition frequency. In the paper, Keystone transform is used for range migration compensation. Also, a parallel searching scheme of Doppler ambiguity resolution is proposed based on Keystone transform. The simulation shows the advantages of the algorithm
Keywords :
Doppler radar; radar resolution; Doppler ambiguity resolution; Keystone transform; linear range migration compensation; parallel searching scheme; pulse repetition frequency; pulsed Doppler radar; target radial velocity; wideband signals; Bandwidth; Chirp modulation; Degradation; Doppler radar; Frequency; Missiles; Pulse modulation; Radar detection; Signal resolution; Signal to noise ratio; Doppler ambiguity; Keystone transform; Pulsed Doppler radar; range migration;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343404
