Nominal Deformations Analysis of BDS Navigation Signal

KANG Li; WANG Xue; XIONG Ding-xi; RAO Yong-nan; LU Xiao-chun; HE Cheng-yan

doi:10.3969/j.issn.0372-2112.2018.12.005

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Nominal Deformations Analysis of BDS Navigation Signal

更新时间：2025-07-16

- Nominal Deformations Analysis of BDS Navigation Signal
- Acta Electronica Sinica Vol. 46, Issue 12, Pages: 2848-2853(2018)
- 作者机构：
  
  1. 中国科学院国家授时中心,陕西,西安,710600
  2. 中国科学院精密导航定位与定时技术重点实验室,陕西,西安,710600
  3. 中国科学院大学电子电气与通信工程学院,北京,101408
  4. 北京跟踪与通信技术研究所,北京,100094
  5. 中国科学院国家授时中心,陕西,西安,710600
  6. 中国科学院精密导航定位与定时技术重点实验室,陕西,西安,710600
  7. 中国科学院大学电子电气与通信工程学院,北京,101408
  8. 北京跟踪与通信技术研究所,北京,100094
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61501430)
- DOI：10.3969/j.issn.0372-2112.2018.12.005
  CLC： V474
- Published Online：25 December 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
KANG Li, WANG Xue, XIONG Ding-xi, et al. Nominal Deformations Analysis of BDS Navigation Signal[J]. Acta Electronica Sinica, 2018, 46(12): 2848-2853.
DOI：

KANG Li, WANG Xue, XIONG Ding-xi, et al. Nominal Deformations Analysis of BDS Navigation Signal[J]. Acta Electronica Sinica, 2018, 46(12): 2848-2853. DOI： 10.3969/j.issn.0372-2112.2018.12.005.

摘要

北斗卫星导航系统（BDS）信号均存在细微的标称失真，传统的研究聚焦于单星信号失真，无法从系统上定量测量各信号由于标称失真带来的测距偏差.该文以大口径天线接收系统采集数据结合软件接收机，从时域波形、通道特性和测距偏差上分析北斗系统B1I信号标称失真.首先利用码相位累加平均方法和标准码片相关技术提取信号时域失真细节，并计算各卫星数字失真量.其次，运用最小二乘法估计信号通道特性，对比分析所有卫星信号通道特性；最后以S曲线过零点偏差（S-Curve Bias，SCB）定量分析B1I信号自然测距偏差及最大测距偏差.文章从多维度定量对比研究了北斗系统B1I信号标称失真，给卫星导航空间信号质量评估和接收机设计提供了新的思路.

Abstract

Beidou satellite navigation system (BDS) contains subtle nominal deformations. The traditional research focuses on deformation of single satellite and cannot quantitatively calculate the ranging biases due to nominal deformations. This paper analyzes BDS B1I signal nominal deformations based on time waveform

channel characteristics and ranging biases. The data are from big antenna receiving system combined with software receivers. Firstly

the cumulative averaging method and standard chip correlation technique are used to extract the details of signal deformations

and the digital distortion value of each satellite is calculated. Then

channel characteristics of all satellite signals are analyzed based on least square method. Lastly B1I signal natural ranging biases and the maximum ranging biases are analyzed quantitatively by S-curve bias. The nominal deformations of B1I signal are comparatively studied from multiple dimensions and the results presented could provide a new thought for signal-in-space assessment and receiver design.

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