Simplified ultra-tightly coupled BDS/INS integrated navigation system  

作　　者：Kanghua TANG Bing LUO Xiaofeng HE 

机构地区：[1]College of Mechatronics and Automation, National University of Defense Technology

出　　处：《Science China(Information Sciences)》2016年第11期150-165,共16页中国科学（信息科学）（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 61104201)

摘　　要：Due to advantages such as low cost, small size, low weight, low power consumption, powerful capa- bility of anti-jamming, and high dynamics, ultra-tightly coupled GNSS/MIMU integrated navigation systems are extensively used in projectile and precision-guided munitions. To overcome the nonlinearity of baseband signal processing and the complexity of the navigation filter, in this paper, we design a novel architecture for the ultra-tightly coupled （UTC） Beidou navigation satellite system （BDS）/INS integration based on the BDS B3 signal, including the combination of code phase and carrier phase dynamics baseband prefilter model, and the navigation filter navigation error propagation and measurement models. To eliminate the clock state compo- nents, i.e., the receiver clock offset and clock drift, the pseudorange, delta pseudorange, and delta pseudorange rate residuals obtained from baseband signal prefilters are differenced between two satellites. Based on the BDS/INS simulator, a test system for the UTC BDS/INS integrated navigation system is developed and UTC performance is evaluated. Some preliminary conclusions are formed about the effectiveness of the UTC BDS/INS integration approach.Due to advantages such as low cost, small size, low weight, low power consumption, powerful capa- bility of anti-jamming, and high dynamics, ultra-tightly coupled GNSS/MIMU integrated navigation systems are extensively used in projectile and precision-guided munitions. To overcome the nonlinearity of baseband signal processing and the complexity of the navigation filter, in this paper, we design a novel architecture for the ultra-tightly coupled （UTC） Beidou navigation satellite system （BDS）/INS integration based on the BDS B3 signal, including the combination of code phase and carrier phase dynamics baseband prefilter model, and the navigation filter navigation error propagation and measurement models. To eliminate the clock state compo- nents, i.e., the receiver clock offset and clock drift, the pseudorange, delta pseudorange, and delta pseudorange rate residuals obtained from baseband signal prefilters are differenced between two satellites. Based on the BDS/INS simulator, a test system for the UTC BDS/INS integrated navigation system is developed and UTC performance is evaluated. Some preliminary conclusions are formed about the effectiveness of the UTC BDS/INS integration approach.

关 键 词：BDS/INS ultra-tightly coupled integrated navigation system baseband signal preprocessing highdynamics BDS/INS simulator 

分 类 号：TN967.2[电子电信—信号与信息处理]