未知陣列流形條件下波達(dá)方向一多普勒頻率盲估計(jì)方法
BLIND ESTIMATES OF DOA-DOPPLER FREQUENY WITH UNKNOWN ARRAY MANIFOLD
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摘要: 本文研究陣列信號(hào)高分辨波達(dá)方向-多普勒頻率二維估計(jì)問題,在未精確已知陣列流形條件下,利用到達(dá)波信號(hào)的多普勒頻率,提出了一種波達(dá)方向-多普勒頻率盲估計(jì)的新方法。理論分析和計(jì)算機(jī)仿真結(jié)果表明此方法在實(shí)際陣列存在增益和相位誤差時(shí)亦有效,而且與現(xiàn)有二維估計(jì)算法相比,其運(yùn)算量較小。Abstract: A novel blind estimate of direction of arrival (DOA) and Doppler frequency with unknown array manifold is proposed, employing Doppler frequency difference between a successive pulses as rotational parameter. The effectiveness of the new method is confirmed by computer simulations. Compared with the existing two-dimensional frequency estimates, the computation load of the proposed method can be saved greatly.
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