Design of station system based on low cost embedded DGPS
Bing Zhang · Jisuanji gongcheng yu sheji · 2011
According to the feature of DGPS base station,such as high cost and lack its independence,the embedded DGPS base station based on ARM9 is designed.It chooses ARM9 as processor,and chooses two GPS receiver boards as primary and alternate GPS base station receiver,uses Linux operational system.It can broadcast various formats of difference information with good poisition conditions of GPS base station receiver.Tests show that system can achieves automatically switch between two GPS receivers according to poisition state.It is realized double online standby redundant.It is important that the costs of DGPS base station system is reduced and the independence is increased.