一种基于空时内插的双基地机载雷达杂波抑制方法
doi: 10.3724/SP.J.1146.2009.00975
Improved Joint Space-Time Interpolation Technique for Bistatic Airborne Radar
-
摘要: 杂波非均匀是双基地机载雷达杂波抑制面临的一大难题，直接制约着常规STAP方法的杂波抑制性能。该文提出了一种改进的联合空时内插方法(ImSTINT)。相对于传统的联合空时内插方法，ImSTINT方法映射变换后的子空间杂波自由度更小，因此能够彻底消除非均匀杂波对双基地机载雷达杂波抑制性能的影响。此外，该方法具有更快的收敛速度和更好的主杂波抑制性能。Abstract: One of the tough task that airborne bistatic radar faced is the extensive existing non-stationary of bistatic clutter which will degrades the performance of STAP remarkably. A novel bistatic modified technique named Improved joint Space-Time INterpolation Technique (ImSTINT) is introduced in this paper. Compared with traditional space-time interpolation techniques, ImSTINT minimizes the degrees of freedom of subspace clutter after transformation to the utter most, and thus eliminates the influence of non-stationary of clutter on clutter suppression in airborne bistatic radar system. Furthermore, ImSTINT has faster convergence rate and better suppression performance against mainlobe clutter.
-
吴洪. 非均匀杂波环境下相控阵机载雷达STAP技术研究 [D].长沙: 国防科学技术大学, 2007.[2]王永良, 彭应宁. 空时自适应信号处理 [M]. 北京：清华大学出版社, 2000: 46-49.[3]Stoica P, Li J, and Zhu X M, et al.. On using priori knowledgein space-time adaptive processing [J].IEEE Transactions onSignal Processing.2008, 56(6):2598-2602[4]Neyt X, Lapierre F D, and Verly J G. Fundamentals of spatialand Doppler frequencies in radar STAP [J].IEEETransactions on Aerospace and Electronic Systems.2008,44(3):1118-1134[5]Melvin W L and Davis M E. Adaptive cancellation methodfor geometry-induced non-stationary bistatic clutterenvironments [J].IEEE Transactions on Aerospace andElectronic Systems.2007, 43(2):651-672[6]Varadarajan V and Krolik J L. Joint space-time interpolationfor distorted linear and bistatic array geometries [J]. IEEETransactions on Signal Processing, 2006, 56(3): 848-860. -
计量
- 文章访问数: 3380
- HTML全文浏览量: 124
- PDF下载量: 693
- 被引次数: 0
下载:
