Fast Computation of Cross Ambiguity Function for DTTB Based Passive Radar

摘要：

A new method is proposed to calculate the cross ambiguity function (CAF) for digital television terrestrial broadcasting (DTTB) based passive radar. The Doppler frequency of the targets is much lower than sampling frequency. The cascade integrator comb (CIC) filter is utilized to realize the large change of sampling frequency. The interpolated second-order polynomials (ISOP) filter is used to compensate the passband droop caused by CIC filtering. A half-band filter is employed to get narrow transition band. And then a short point FFT is performed instead of the long point FFT. The experiment results and computation complexity are given compared with other methods. It shows that the proposed method doesnt affect detection and estimation performance, and the computation is reduced significantly.

关键词： cross ambiguity function passive radar CIC ISOP

作者: Yang Jinlu Shan Tao Tao Ran

作者单位: School of Information and Electronics Beijing Institute of Technology Beijing, China

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)

会议地点: 大连

会议语种:英文

页码: 661-664

在线出版日期: 2010-07-05（万方平台首次上网日期，不代表论文的发表时间）