The Adaptive Continuous Wave Interference Mitigation Algorithm in GPS Receiver

LIN Xiao-long; HE Wen-tao; XU Jian-hua; YE Tian-chun

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The Adaptive Continuous Wave Interference Mitigation Algorithm in GPS Receiver

更新时间：2026-09-04

- The Adaptive Continuous Wave Interference Mitigation Algorithm in GPS Receiver
- Vol. 30, Issue 12, Pages: 18-21(2013)
- 作者机构：
  
  中国科学院机构微电子研究所,北京,100029
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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蔺晓龙, 何文涛, 徐建华, 叶甜春. GPS接收机中自适应连续波干扰抑制算法[J]. 微电子学与计算机, 2013, 30(12): 18-21.

LIN Xiao-long, HE Wen-tao, XU Jian-hua, et al. The Adaptive Continuous Wave Interference Mitigation Algorithm in GPS Receiver[J]. 2013, 30(12): 18-21.
蔺晓龙, 何文涛, 徐建华, 叶甜春. GPS接收机中自适应连续波干扰抑制算法[J]. 微电子学与计算机, 2013, 30(12): 18-21. DOI：

LIN Xiao-long, HE Wen-tao, XU Jian-hua, et al. The Adaptive Continuous Wave Interference Mitigation Algorithm in GPS Receiver[J]. 2013, 30(12): 18-21. DOI：

摘要

在地球表面，GPS信号强度在-130 dBm左右，容易受到干扰。其中最主要的一类干扰类型是连续波干扰，针对该问题，提出一种新的连续波干扰检测和抑制算法，该算法首先使用多级DFT 变换检测连续波干扰，然后使用级联的IIR陷波器对干扰进行抑制。测试结果表明:在存在多个-81 dBm连续波干扰的情况下，该方法能够在3 s内进行检测和抑制，同时GPS接收机的载噪比损失小于3 dB。

Abstract

On the surface of the Earth

the GPS signals strength is around-130 dBm. Its vulnerable to interference.And the most important types of interference are the continuous-wave interference.A new continuous-wave interference detection and suppression method is presented.First

this method uses multi-level DFT transform to detect continuous wave interference

and then uses the cascade IIR notch filter to suppress the interferences.Test results show that:When there are -81 dBm continuous wave interferences

this method can detect and suppress these interferences in 3 s

and the GPS receivers carrier to noise ratios loss is less than 3 dB.

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