基于相参脉冲时频估计的到达时间差精确估计算法研究
doi: 10.3724/SP.J.1146.2005.01444
New Time-Frequency Algorithm for the Estimation of Time Difference of Arrival for Coherent Pulses
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摘要: 在介绍了利用到达时间差进行多站无源定位的方法后,该文在高精度定位要求下讨论了现有到达时间差估计方法,针对相参脉冲雷达信号提出了一种简化的时频相关方法:频率补偿到达时间差估计算法,避免了频率-时间二维搜索计算。这种方法具有估计精度高、计算量小、适用条件宽的优点。仿真试验验证了上述结论。
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关键词:
- 无源定位;到达时间差;时频相关;频率补偿
Abstract: A new algorithm is proposed for Time Difference of Arrival(TDOA) estimation from a train of coherent pulses in additive Gaussian noise, named it as frequency compensation TDOA estimation. It is shown to be a algorithm with small estimation error, small computation and good applicability. Simulations are given to support these conclusion. -
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