Performance of XFAST in the presence of code Doppler

TANG Xiao-mei; YONG Shao-wei; WANG Fei-xue

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Performance of XFAST in the presence of code Doppler

更新时间：2024-10-14

- Performance of XFAST in the presence of code Doppler
- Vol. 31, Issue 8, Pages: 54-59(2010)
- 作者机构：
  
  国防科学技术大学电子科学与工程学院卫星导航研发中心
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN967.1
- Published：2010
- 稿件说明：
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TANG Xiao-mei, YONG Shao-wei, WANG Fei-xue. Performance of XFAST in the presence of code Doppler[J]. 2010, 31(8): 54-59.
DOI：

TANG Xiao-mei, YONG Shao-wei, WANG Fei-xue. Performance of XFAST in the presence of code Doppler[J]. 2010, 31(8): 54-59. DOI：

摘要

推导了存在伪码多普勒及重叠引起噪声恶化条件下的XFAST(extended replica folding acquisition search technique)算法的捕获和虚警概率公式

与高精度仿真的结果吻合误差小于0.5dB。研究成果为XFAST算法参数优化、性能评估提供了理论和方法基础。将扩展复制重叠段数设为1

即可适用于常规捕获算法的精确建模和分析。

Abstract

The probability of detection and false alarm in XFAST（extended replica folding acquisition search technique） were introduced in the condition of code Doppler and deterioration of noise caused by replica folding.The simulation re-sults show that the model is correct

the equal signal to noise error is less than 0.5dB.The research is the academic base of XFAST parameter optimization and performance.When the extended replica folding number equal to 1

the model can be used to analyse other acquisition algorithm.

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