...
首页> 外文期刊>Communications and Networks, Journal of >Maximum likelihood and signal-selective TDOA estimation for noncircular signals
【24h】

Maximum likelihood and signal-selective TDOA estimation for noncircular signals

机译:非圆形信号的最大似然和信号选择性TDOA估计

获取原文
获取原文并翻译 | 示例
           

摘要

This paper addresses the issue of time-difference-of-arrival (TDOA) estimation for complex noncircular signals. First, under the wide-sense stationary assumption, we derive the maximum likelihood (ML) estimator and the Cramer-Rao lower bound for Gaussian noncircular signals in Gaussian circular noise. The ML estimator uses the second-order statistics information of a noncircular signal more comprehensively when compared with the cross-correlation (CC) and the conjugate CC estimators. Further, we present a scheme to modify the traditional signal-selective TDOA methods for noncircular signals on the basis of the cyclostationarity of man-made signals. This scheme simultaneously exploits the information contained in both the cyclic cross-correlation (CCC) and the conjugate CCC of a noncircular signal.
机译:本文解决了复杂非圆形信号的到达时间差(TDOA)估计问题。首先,在广义的平稳假设下,我们推导了高斯圆形噪声中高斯非圆形信号的最大似然(ML)估计量和Cramer-Rao下界。与互相关(CC)和共轭CC估计器相比,ML估计器更全面地使用非圆形信号的二阶统计信息。此外,我们提出了一种基于人为信号的循环平稳性修改非圆形信号的传统信号选择TDOA方法的方案。该方案同时利用了非圆形信号的循环互相关(CCC)和共轭CCC中包含的信息。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号