BD1 (Beidou 1) and BD2 radio frequency compatible receiving method and device
A technology of a receiving device and Beidou, applied in the field of satellite navigation, can solve the problems of increasing the production cost of the receiver, trouble for users, etc., and achieve the effect of stabilizing the amplitude and phase characteristics and reducing the extra cost.
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[0021] see figure 1 , a preferred Beidou Phase I and Beidou Phase II RF compatible receiving device of the present invention is mainly composed of a power supply module, an antenna connected to the power supply module, a low-noise amplification module, a radio frequency module and a baseband signal processing module. In operation, the receiver receives the Beidou satellite signal from the antenna, and completes the positioning calculation. The radio frequency module completes the signal down-conversion, A / D conversion to the intermediate frequency digital signal, and the baseband signal processing module completes the synchronization of the signal and the message of the navigation information. Decoding, pseudo-range extraction and PVT calculation, and finally serial output of positioning information.
[0022] In the present invention, the antenna is used to receive the Beidou navigation signal, and then send it to the low-noise amplification module for amplification. The perf...
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