| 一种再生测距伪码的自适应捕获技术 |
| |
| 引用本文： | 谢兆耕,吴学英,徐宝碧.一种再生测距伪码的自适应捕获技术[J].航天器工程,2011,20(5):78-82. |
| |
| 作者姓名： | 谢兆耕 吴学英 徐宝碧 |
| |
| 作者单位： | 北京空间飞行器总体设计部,北京,100094 |
| |
| 基金项目： | 国家863项目“火星探测测控通信关键技术”课题资助,项目编号2008AA12A204 |
| |
| 摘 要： | 深空探测距离远,适合使用再生伪码测距技术。针对空间数据系统咨询委员会（CCSDS）提出的T2B测距复合伪码,计算了其6个子码在不同延拓周期下的相关值,推导了星上相关运算前信号噪声的分布形式。在对判决量统计特性分析的基础上,采用最大似然估计准则（MLE）对噪声标准差进行了合理估计,通过噪声标准差估计了判决门限,并采用奈曼...
|
| 关 键 词： | 深空探测 再生伪码测距 自适应门限 最大似然估计 奈曼-皮尔逊准则 |
An Adaptive Acquisition Technique for Regenerative Code Ranging |
| |
| XIE Zhaogeng WU Xueying XU Baobi.An Adaptive Acquisition Technique for Regenerative Code Ranging[J].Spacecraft Engineering,2011,20(5):78-82. |
| |
| Authors: | XIE Zhaogeng WU Xueying XU Baobi |
| |
| Institution: | XIE Zhaogeng WU Xueying XU Baobi(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China) |
| |
| Abstract: | In deep space exploration,the distance between satellite and Earth is very long,So it is appropriate to adopt regenerative code ranging.For the T2B composite code proposed by CCSDS,correlation values in different extended code length are calculated.The distribution of signal and noise before correlation is researched.Then,on the basis of analyzing decision variable,we use the Maximum Likelihood Estimation(MLE) criterion to estimate the standard deviation and create hypothesis testing set with N-P criterion.... |
| |
| Keywords: | deep space exploration regenerative code ranging adaptive threshold maximum likelihood estimation Neyman-Pearson criterion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
