In order to improve measurement precision of vehicularlaser Doppler velocity at low signal-to-noise ratio(SNR)and keep a better real-time,the theoretical and experimental research based on the correlation detection algorithm was performed.Starting from the CRLB of speed estimation,the relationship of SNR with sampling points and SNR estimation in frequency domain was combined.The optimal autocrrelation multiplicity and sampling points were chosen according the SNR of the original signal,thus the calculation...
【更新日期】
2017-05-16
【分类号】
TN957.51
【正文快照】
0 引言自主导航系统已经成为陆海空天各类航行武器系统如导弹发射车、指挥车、潜艇、舰艇、轰炸机、预警机、侦查卫星和军用导航卫星等必不可少的重要设备,其通过实时测量载体的速度和姿态,推算载体当前位置并引导载体到达指定位置[1]。激光多普勒测速雷达(Laser Doppler Ve
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