New Method for Unambiguous Velocity Measurement in Low PRT Radar
Low pulse repetition frequency (PRF) radars are mainly used for target tracking and measurement of distance and angle. Because the pulse repetition frequency is very low and there is serious ambiguity in radial velocity measurement,many common methods can not resolve the ambiguity effectively. Based on the velocity measurement system which includes the digital intermediate frequency locked loop (DIFLL) and spectrum peak search (SPS),a changeable step search method is put forward to resolve the ambiguity,and the symmetrical coefficient is used to judge the spectrum peak. In the result,the anti-noise performance is improved by nearly 24dB and the speed of ambiguity resolution is greatly increased. The simulation results prove that this method is available and has high practicable value.
low PRF radar spectrum peak search unambiguous radial velocity measurement changeable step search.
Xin Wei Lifen Zuo Guangjun Mei Tao Wu
Academy of Equipment Command & Technology (AECT) P.O.BOX 3380 No.72,Huairou,Beijing,China,101416 Academy of Equipment Command & Technology (AECT) P.O.BOX 3380 No.72,Huairou,Beijing,China,91469 Troo Academy of Equipment Command & Technology (AECT) P.O.BOX 3380 No.72,Huairou,Beijing,China,61846 Troo
国际会议
2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)
北京
英文
1142-1145
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）