With the increasing demands for higher positioning precision of global satellite navigation systems

pseudorange biases have been receiving more and more attentions in recent years. Unfortunately

few researches have been done on the pseudorange biases of Beidou navigation satellite system (BDS). The origin of BDS pseudorange biases are illustrated thoroughly in the beginning

and then based on which the dependency of biases on receiver configurations are studied. Our research used high-fidelity BDS satellite signal observations collected by a 40 m high-gain dish antenna in Haoping Observatory

and used software receiver technology to achieve the pseudorange biases results of BDS B1I and B3I signals from different front-end bandwidths

different correlator spacings and different satellite elevations. Finally

based on the characteristics of BDS pseudorange biases

the suggested settings of BDS receiver configurations such as front-end bandwidth and correlator spacing are clearly proposed for the first time. Research results show that the pseudorange biases of BDS signals will be less than approximately 20 cm under the condition proposed in this paper. This study will contribute to a better understanding of and special attention to pseudorange biases

and will be a significant promotion to a clear definition of the appropriate receiver parameter settings in the ICDs for BDS and other individual satellite system.