Design Of Beidou Nabigation Satellite Module

Beidou timing module since the completion of the Beidou navigation satellite system after the rapid development of network,can provide equipment for positioning module,message communication,timing and other functions,this paper introduces the Beidou satellite system,Beidou signal composition and communication principle,hardware circuit design and principle diagram of Beidou navigation timing module,through the production of prototype and the hardware debugging and software programming,and Realization of satellite communication,positioning and timing functions.People usually use the quartz clock,quartz clock every year will have error for nearly 1 minutes,but it has no great influence on our life.But in many important areas,some of the equipment high demands on the precision of time.Scientists invented the atomic clock,Equipment with satellite launched into space.This is a kind of equipment very accurate atomic clock,The atomic clock has an error of only one second every 20 million years,so we as long as the equipment and atomic clock synchronization,you can get the exact time.And what we have to do is get and satellite communication,satellite broadcasting time information.The m sequence of Beidou satellite signals based on pseudo code stripping,hardware circuit design theory of navigation satellite module.The design technology research has three points: first,the modulation signal emission generating second,after the carrier signal generation and modulation signal to BPSK modulation.Third,the modulated signal is amplified to 10 watts without oscillation.This design will use Beijing Microelectronics Technology Research Institute BM3005 as the main chip,the processing unit received RF signal with Maxim MAX2769,carrier signal will be generated by the SI4133 Silicon of Laboratories company,the main signal amplification circuit by STMicroelectronics PD20010-E.