Pseudorange bias has become a practical obstacle in the field of high-precision global navigation satellite system (GNSS) applications, which greatly restricts the further development of high-precision applications. Unfortunately, no studies have been conducted on the pseudorange biases of the BeiDou navigation satellite system (BDS). To mitigate the effects of pseudorange biases on the BDS performance to the greatest extent possible, the origin of such BDS pseudorange biases are first thoroughly illustrated, based upon which the dependency of the biases on the receiver configurations are studied in detail. Owing to the limitations regarding the parameter re-settings for hardware receivers, software receiver technology was used to achieve the ergodicity of the receiver parameters, such as the correlator spacing and front-end bandwidth, using high-fidelity signal observations collected by a 40-m-high gain dish antenna at Haoping Observatory. Based on this, the pseudorange biases of the BDS B1I and B3I signals and their dependency on different correlator spacings and front-end bandwidths were adequately provided. Finally, herein, the suggested settings of the correlator spacing and front-end bandwidth for BDS receivers are in detail proposed for the first time. As a result, the pseudorange biases of the BDS signals will be less than 20 cm, reaching even under 10 cm, under this condition. This study will provide special attention to GNSS pseudorange biases, and will significantly promote a clear definition of the appropriate receiver parameter settings in the interface control documents of BDS and other individual satellite systems.

中文翻译：

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表征和减轻北斗导航卫星系统伪距偏差的初步分析

伪距偏差已成为高精度全球导航卫星系统（GNSS）应用领域中的实际障碍，这极大地限制了高精度应用的进一步发展。不幸的是，尚未对北斗导航卫星系统（BDS）的伪距偏差进行研究。为了最大程度地减轻伪距偏差对BDS性能的影响，首先全面说明此类BDS伪距偏差的起源，在此基础上详细研究偏差对接收机配置的依赖性。由于硬件接收器的参数重置存在局限性，因此使用软件接收器技术来实现接收器参数的遍历性，例如相关器间距和前端带宽，使用Haoping天文台的40 m高增益碟形天线收集的高保真信号观测结果。基于此，充分提供了BDS B1I和B3I信号的伪距偏差及其对不同相关器间隔和前端带宽的依赖性。最后，在本文中，首次详细建议了BDS接收器的相关器间隔和前端带宽的建议设置。结果，在这种情况下，BDS信号的伪距偏差将小于20 cm，甚至在10 cm以下。这项研究将特别关注GNSS伪距偏差，并将在BDS和其他单个卫星系统的接口控制文档中极大地促进对适当的接收机参数设置的清晰定义。