| 基于能量检测法的统计特性分析 |
| |
| 引用本文： | 王懋,;袁新波,;张海黎.基于能量检测法的统计特性分析[J].航天电子对抗,2014(6):41-44. |
| |
| 作者姓名： | 王懋 ;袁新波 ;张海黎 |
| |
| 作者单位： | [1]电子工程学院,安徽合肥230037; [2]国营990厂,安徽合肥230037; [3]北京地区军事代表室,北京100083 |
| |
| 基金项目： | 国家自然科学基金（61271300,61072107） |
| |
| 摘 要： | 能量检测法是一种适用范围广泛的信号盲检测方法,而统计特性分析的准确估计是其应用的基础和前提。针对其检测量的统计特性分析,通过系统分析和理论推导,发现在仅有噪声输入的情况下,检测量服从卡平方分布;信号加噪声输入时的检测量服从非中心卡平方分布。最后利用详细的仿真分析验证了检测量统计特性分析的正确性,为能量检测法的应用提供了参考和依据。
|
| 关 键 词： | 能量检测 统计特性分析 卡方分布 非中心卡方分布 |
Analysis of statistical characteristic for energy detection method |
| |
| Institution: | Wang Mao , Yuan Xinbo, Zhang Haili (1. Electrnoic Engineering Institute, Hefei 230037, Anhui, China ;2. No. 990 Factory,Hefei 230037,Anhui,China; 3. Beijing Area Delegacy Bureau of the Fourth General Stall,Beijing 100083,China) |
| |
| Abstract: | The energy detection method is widely used in the blind signal detection field, and the precise es- timation of the statistical characteristics analysis is the basis and precondition in its application. For the analysis of the detection quantity＇s statistical characteristics, following results are given by systematic analysis and theoretic deduction. The detection quantity obeys chi-square distribution when no signal but only noise is added to the input, while it obeys non-central chi-square distribution when both signal and noise are added to the input. Finally, the simulation proves the correctness of the analysis of the detection quantity＇s statistical characteristics, and provides the reference and foundation for the application of energy detection. |
| |
| Keywords: | energy detection statistical characteristic analysis chi-square distribution non-central chi-square distribution |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
