| 摘要: |
| 为解决机载接收机无法正常接收真实卫星导航信号的问题，提出了一种多体制转发式卫星导航信号源的总体设计方案，并分析了涉及的关键技术。采用“接收机+发射机”的原理，通过对卫星导航信号接收、解扩解调、抗干扰、频率变换、调制扩频和放大等处理，实现信号的转发。该方案支持当前全球多种主流卫星导航系统体制，例如GPS、BDS和GLONASS等信号，实际试验证明了其有效性。该技术方案还可用于导航设备研制、调试和通信导航的集成验证等特殊场景。 |
| 关键词: 卫星导航接收机 多频段 导航信号源 转发式 机载设备 |
| DOI： |
|
| 基金项目: |
|
| Overall design of multi-band RF retransmission satellite navigation signals simulator |
| XU Zhi-min |
| () |
| Abstract: |
| To solve the problem that airborne receiver cannot receive real satellite navigation signals,an overall design scheme of multi-band RF retransmission satellite navigation signals simulator is presented and related key techniques are analyzed.According to the principle of “a receiver+a transmitter”,the RF signals of satellite are retransmitted through receiving navigation signal,de-spread-spectrum and demodulation,anti-interference processing,changing carrier frequency modulation and spread-spectrum amplifying.The scheme is suitable for GPS,BDS and GLONASS signals.Engineering application proves its effectiveness.The scheme can be used extensively in satellite navigation equipment development and verification of integration of communication and navigation. |
| Key words: satellite navigation receiver multi-frequency band navigation signals simulator RF retransmission airborne equipment |
《电讯技术》编辑部 