| 引用本文: | 徐博,孙广富,陈华明,等.伪卫星增强系统参考站接收机的测距偏差及优化.[J].国防科技大学学报,2017,39(6):177-181.[点击复制] |
| XU Bo,SUN Guangfu,CHEN Huaming,et al.Optimization on ranging deviation of reference station receivers in pseudolite augmentation system[J].Journal of National University of Defense Technology,2017,39(6):177-181[点击复制] |
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| 伪卫星增强系统参考站接收机的测距偏差及优化 |
| 徐博, 孙广富, 陈华明, 欧钢 |
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(国防科技大学 电子科学学院 卫星导航研发中心， 湖南 长沙 410073)
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| 摘要: |
| 伪卫星相对地面用户是静止的，因此卫星与参考站接收机之间的距离几乎是不变的。在这种情况下，采样和量化引入的误差不再服从高斯分布，从而影响接收机的测量精度。为了解决这一问题，建立了卫星导航接收机的离散数字信号模型，并在此基础上分析了采样和量化对测距偏差的影响，通过仿真验证了结论的正确性，并提出了伪卫星增强系统下参考站接收机的优化设计方法。 |
| 关键词: 卫星导航 伪卫星 参考站接收机 测距偏差 |
| DOI：10.11887/j.cn.201706026 |
| 投稿日期：2016-07-28 |
| 基金项目:国家自然科学基金资助项目（61403413） |
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| Optimization on ranging deviation of reference station receivers in pseudolite augmentation system |
| XU Bo, SUN Guangfu, CHEN Huaming, OU Gang |
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(Satellite Navigation R&D Center, College of Electronic Science, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The pseudo-satellite is stationary for the reference station receiver, therefore, the distance among reference station receivers is nearly kept constant. On that condition, the error caused by sampling and quantization is not Gaussian variables, which can have impact on the measurement accuracy. In order to solve the problem, the digital signal model of satellite navigation receiver was introduced, and then the effect of sampling and quantization error on measure bias was analyzed. Simulation results are presented to support the conclusion, and the optimization of reference receiver in pseudo satellite system is proposed in the end. |
| Keywords: satellite navigation pseudolite reference station receivers ranging deviation |
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