Pseudorange Bias Correction of BeiDou-3 Satellite Navigation Signals in the Localization of Large-Scale Power Distribution Equipment

Using only the correction parameters between ISCs (Inter signal correction) signals to establish a pseudorange offset correction model is susceptible to changes in receiver bandwidth, resulting in excessive pseudorange offset. Therefore, it is necessary to design a new method for correcting the pseudorange offset of Beidou-3 satellite navigation signals in the positioning of large-scale power distribution equipment. That is to say, the navigation signal of the Beidou-3 satellite in the positioning of large power distribution equipment was processed, and the pseudo range deviation correction parameters of the Beidou-2 satellite navigation signal were adjusted using BOC, thus achieving the correction of the pseudo range deviation of the Beidou-3 navigation signal. The experimental results show that the pseudorange deviation of the Beidou-3 satellite navigation signal in the positioning of large power distribution equipment is relatively low between different dates. This method has good correction effect, accuracy, and certain application value, making a certain contribution to reducing the risk of satellite navigation signal distortion.