全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

空时联合处理分辨性能下界的研究

Keywords: 不可分辨目标,空时联合分辨下界,假设检验,最小错误概率准则

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对相控阵雷达阵列天线空时快拍数据模型,研究空时二维联合分辨下界(STJRL,简称联合下界).从检测理论出发,采用最小错误概率准则,给出了联合下界关于信噪比、空时信号波形、分辨概率的表达式.联合下界表达式与一维分辨下界比较表明空时二维联合分辨充分利用了回波信号在空间频率和多普勒频率上的二维差异,分辨性能优于一维分辨.通过MonteCarlo仿真比较了空时联合分辨下界和信息论准则方法(AIC)、最小描述长度方法(MDL)得到的实验分辨性能,结果表明AIC与MDL方法的δt/δtf~RSN曲线都在联合分辨理论下界曲线之上,而似然比检测器δt/δtf~RSN曲线与空时联合分辨下界曲线符合得很好.

References

[1]  Lee H B. The Cramer-Rao bound on frequency estimates of signals closely spaced in frequency(unconditional case)[J]. IEEE Transactions on Signal Processing, 1994,42:1569-1572.
[2]  Swingler D N. Simple approximation to the Cramer-Rao lower bound on directions of arrival for closely spaced sources[J]. IEEE Transactions on Signal Processing, 1993,41:1668-1672.
[3]  Smith S T. Statistical resolution limits and the complexified Cramer-Rao bound[J]. IEEE Transactions on Signal Processing, 2005,53:1597-1609.
[4]  Stoica P, Simonyte V, Soderstrom T. On the resolution performance of spectral-analysis[J]. Signal Processing, 1995,44:153-161.
[5]  Kaveh M, Barabel A J. The statistical performance of the MUSIC and the minmum-norm algorithm in resolving plane-waves in noise[J]. IEEE Transactions on Acoustics Speech and Signal Processing, 1986, 34: 331-34.
[6]  Lee H B, Wengrovitz M S. Resolution threshold of beamspace MUSIC for two closely spaced emitters[J]. IEEE Transactions on Acoustics Speech and Signal Processing, 1990,38:1545-1559.
[7]  Shahram M, Milanfar P. On the resolvability of sinusoids with nearby frequencies in the presence of noise[J]. IEEE Transactions on Signal Processing, 2005,53:2579-2588.
[8]  Amar A, Weiss A J. Fundamental limitations on the resolution of deterministic signals[J]. IEEE Transactions on Signal Processing, 2008,56:5309-5318.
[9]  李朝伟.低分辨率雷达对群目标的检测与分辨研究[D].长沙:国防科技大学电子科学与工程学院,2005. Li Chaowei. Research on the detection and discrimination of unresolved targets of the low resolution Radar[D]. Changsha: School of Electronic Science and Technology, National University of Defense Technology, 2005. (in Chinese)
[10]  M.K.斯蒂芬.统计信号处理基础[M].罗鹏飞,译.北京:电子工业出版社,2006. Steven M K. Fundamentals of statistical signal processing[M]. Luo Pengfei, transl. Beijing: Publishing House of Electronics Industry, 2006. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133