空时自适应处理的滑窗递推QR算法
doi: 10.3724/SP.J.1146.2007.00545
Sliding Window Recursive QR Factorization of Space-Time Adaptive Processing Algorithm
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摘要: 在局部平稳的杂波环境下，滑窗样本选取方法可以比较准确地估计检测单元的杂波统计特性。该文提出基于滑窗选取样本的递推QR算法，它采用双曲Householder变换实现QR分解的递推，能有效地抑制局部平稳杂波，且具有数值稳定性好，计算量小的优点。仿真数据处理和实测数据处理验证了该方法的有效性。Abstract: Secondary data acquired with sliding window method can accurately estimate clutter statistics of target-gate under localized stationary environment. In this paper, a recursive QR factorization method based on sliding window is presented, which adopts hyperbolic Househoulder transformation to realize the recursion of QR factorization. The method can not only suppress localized stationary clutter effectively, but also exhibit good numerical stability and low complexity. Simulation data processing results and real data processing results are given to demonstrate the effectiveness of the method.
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[1] Lim C, Aboutanios E, and Mulgrew B. Modified JDL withDoppler compensation for airborne bistatic radar.Proceedings of IEEE Radar Conference, USA, May 2005:854-858. Jaffer A, Himed B, and Ho P P. Estimation of rangedependentclutter covariance by configuration systemparameter estimation. Proceedings of IEEE RadarConference, USA, May 2005: 596-601. [2] Lim C, Aboutanios E, and Mulgrew B. Linear prediction ofrange-depent inverse covariance matrix. Proceedings ofIEEE Radar Conference, USA, April 2006: 228-232. Xavier N, Marc A, and Jacques G V. Range-dependenceissues in multistatic stap-based radar. Proceedings of IEEERadar Conference, USA, April 2006: 594-598. Douglas A P, Braham H, and Mark E D. Higher orderclutter mitigation in bistatic space-based radar systemsusing a knowledge-aided stap approach. Proceedings ofIEEE Radar Conference, USA, April 2006: 459-504. [3] Athanasios A R. New fast QR decomposition least squaresadaptive algorithms[J].IEEE Trans. on Signal Processing.1998, 46(8):2113-2121 [4] Wang Y L and Peng Y N. Space Time Adaptive Processing.Beijing: Tsinghua University Press, 2000: 184-186. [5] Goldstein J S and Irving S R. A multistage representationof the wiener filter based on orthogonal projections[J].IEEETrans. on Information Theory.1998, 44(7):2943-2959 [6] Charles M R and Allan O S. Hyperbolic householdertransformations[J].IEEE Trans. on Acoustics, Speech andSignal Processing.1986, 34(6):1589-1602 [7] Reed I S and Mallett J D. Rapid convergence rate inadaptive arrrays. IEEE Trans. on AES, 1974, 10(6): 853-863. -
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