| 点频干扰下GPS接收机捕获性能研究 |
| |
| 引用本文： | 胡东亮,李延辉.点频干扰下GPS接收机捕获性能研究[J].舰船电子工程,2006,26(5):74-76. |
| |
| 作者姓名： | 胡东亮 李延辉 |
| |
| 作者单位： | 1. 海军工程大学,武汉,430033
2. 空军雷达学院,武汉,430010 |
| |
| 摘 要： | 在GPS接收机信号捕获原理的基础上，分析了点频干扰对接收机捕获性能的影响。给出了GPSC／A码接收机信号捕获的数学模型，计算得出GPSC／A码接收机的平均捕获时间与捕获时间方差，推导出点频干扰与噪声的功率谱密度，从而得到检测概率和虚警概率的表达式，仿真结果表明，当点频干扰功率超过一定的值时，会导致GPS接收机捕获性能恶化。
|
| 关 键 词： | GPS接收机 点频干扰 信号捕获 |
| 收稿时间： | 2006-03-10 |
| 修稿时间： | 2006-04-17 |
Research of GPS Receiver Acquisition Performance under Single Frequency Interference |
| |
| Hu Dongiiang,Li Yanhui.Research of GPS Receiver Acquisition Performance under Single Frequency Interference[J].Ship Electronic Engineering,2006,26(5):74-76. |
| |
| Authors: | Hu Dongiiang Li Yanhui |
| |
| Institution: | 1College of Electrical and Information Eng., Naval Univ. of Engineering, Wuhan 430033;2.Dept. of Electrical Countermine, Air Force Radar College ,Wuhan 430010 |
| |
| Abstract: | Based on the acquisition principle of GPS receivers,effect of single frequency interference on GPS C/A code receiver acquisition performance is analyzed.In this paper,a detailed mathematical model for signal acquisition based on the analysis of the GPS receivers' circuit,average acquisition time and its variance are calculated,the Power spectrum density of single frequency interference and noise are deduced,thereby the expressions of detecting probability and false alert probability are concluded.The result of computer simulation indicates that acquisition performance badly worsened when the power of single frequency interference exceed a certain value. |
| |
| Keywords: | GPS receiver single frequency interference signal acquire |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
