| 摘要: |
| 为保证复杂电磁环境下对北斗卫星信号的可靠、准确和连续的接收能力，在分析抗干扰与高精度联合处理的理论模型的基础上，提出一种功率倒置准则与最小均方误差准则结合的空时联合抗干扰技术。该技术能够在北斗信号导向矢量获取失效、阵列流形特性变化或信号入射角度未知等条件下实现北斗抗干扰处理并兼顾载波测量的相位响应不失真。仿真实验表明，所提出的空时联合抗干扰技术在抗干扰达到干噪比50 dB的同时，载波相位畸变误差小于整周1%，满足抗干扰与高精度测量要求，可以有效支持精密进近引导技术所适配的各类战术应用。 |
| 关键词: 北斗系统(BDS) 精密进近引导 空时联合 抗干扰算法 高精度测量 |
| DOI：10.20079/j.issn.1001-893x.240821005 |
|
| 基金项目: |
|
| Space-Time Adaptive Processing Anti-jamming Technology of BDS Supporting Precision Approach Guidance |
| KANG Ronglei,ZHANG Hao,CHANG Jun,XIONG Jian |
| (1.Southwest China Institute of Electronic Technology,Chengdu 610036,China;2.Army Equipment Department Representative Office in Chengdu Region,Chengdu 610036,China) |
| Abstract: |
| In order to ensure the reliable,accurate and continuous reception of Beidou System(BDS) satellite signal under complex electromagnetic environment,a space-time joint anti-jamming technology by combining power inversion and minimum mean squared error criterion is proposed based on analyzing the theoretical model of anti-jamming and high-precision combined processing.This method can realize the anti-jamming processing of BDS signal and the phase response of carrier measurement without distortion under the conditions of BDS signal guidance vector acquisition failure,changing array manifold characteristic or the unknown signal incidence angle.Simulation results show that the carrier-phase distortion error of the proposed method is less than 1% of the whole-cycle when the jamming-noise-ratio reaches 50 dB,which can meet the requirements of anti-jamming and high-precision measurement and support a variety of tactical applications for precision approach guidance technology. |
| Key words: Beidou system(BDS) precision approach guidance space-time adaptive processing anti-jamming algorithm high-precision measurement |
