系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (7): 2270-2275.doi: 10.12305/j.issn.1001-506X.2022.07.23

• 制导、导航与控制 • 上一篇    下一篇

抗干扰型卫星导航接收机的最优前端增益

鲁祖坤*, 郭海玉, 宋捷, 孙一凡, 李柏渝   

  1. 国防科技大学电子科学学院, 湖南 长沙 410073
  • 收稿日期:2021-07-03 出版日期:2022-06-22 发布日期:2022-06-28
  • 通讯作者: 鲁祖坤
  • 作者简介:鲁祖坤(1989—), 男, 讲师, 博士, 主要研究方向为星基导航与定位技术、卫星导航抗干扰技术、低轨导航增强技术|郭海玉(1997—), 男, 硕士研究生, 主要研究方向为星基导航与定位技术、卫星导航抗干扰技术|宋捷(1998—), 女, 硕士研究生, 主要研究方向为星基导航与定位技术、卫星导航抗干扰技术|孙一凡(1994—), 女, 博士研究生, 主要研究方向为星基导航与定位技术|李柏渝(1983—), 男, 副研究员, 博士, 主要研究方向为星基导航与定位技术、卫星导航信号干扰监测、低轨导航增强技术
  • 基金资助:
    国家自然科学基金(62003354)

Optimal front-end gain of anti-jamming satellite navigation receiver

Zukun LU*, Haiyu GUO, Jie SONG, Yifan SUN, Baiyu LI   

  1. College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • Received:2021-07-03 Online:2022-06-22 Published:2022-06-28
  • Contact: Zukun LU

摘要:

基于全球导航卫星系统(global navigation satellite system,GNSS)接收机射频前端增益大小引起的抗干扰能力与模数转换器(analog to digital converter,ADC)量化损耗之间的矛盾问题,提出一种抗干扰性能约束下的最优前端增益设计方法。首先,建立射频通道、ADC的数学模型。然后,分析在无干扰情况下前端增益对信号采样的影响、干扰条件下的抗干扰极限性能。最后,针对前端增益对信号接收与抗干扰性能之间的矛盾,以抗干扰性能为优化目标提出了最优的前端增益设计方法。仿真实测结果验证了本文分析结论的准确性和提出方法的有效性。

关键词: 全球导航卫星系统接收机, 抗干扰, 低噪放, 前端增益, 载噪比损耗, 量化误差

Abstract:

Based on the contradiction between the anti-interference ability caused by the radio frequency (RF) front-end gain of global navigation satellite system (GNSS) receiver and the quantization loss of analog-to-digital converter (ADC), an optimal front-end gain design method under the constraint of anti-interference performance is proposed. Firstly, the mathematical models of RF channel and ADC are established. Then, the influence of front-end gain on signal sampling without interference and the anti-interference limit performance under interference are analyzed. Finally, aiming at the contradiction between the front-end gain on signal reception and anti-interference performance, taking the anti-interference performance as the optimization goal, an optimal front-end gain design method is proposed. The simulation results verify the accuracy of the analysis conclusions and the effectiveness of the proposed method.

Key words: global navigation satellite system (GNSS) receiver, anti-jamming, low noise amplifier, front-end gain, carrier-to-noise ratio loss, quantization error

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