| Gyroscope Free Strapdown Inertial Navigation System(GFSINS) is still a kind of Strapdown Inertial Navigation System,on which accelerometers are directly fixed,but gyros are given away.In such a system acceleration is the exclusive information source,which is used to get all the navigation parameters by means of computing.The system's outstanding virtues is low cost,high relability, low power,longevity,promote reaction and so on.In order to deeply research the characteristics of GFSINS,and continually perfect its theory knowledge,it can be said like this,that a set of theory prototype machine's being developed is a very important step in the process of researching GFSINS,and finally make it realized in practice.Under such background,the paper develops a circuit system which can finish the task of data acquisition and data processing.For GFSINS the module of data acquisition and data processing is a very important part,firstly,acceleration signal must be adjusted into the range of the data acquisition module,and the data must be reserved,such function is completed by data acquisition module;secondly,the digital signals must be reverted to analog signals according to the transformation relationship of the whole system,thereby the navigation parameter is computed.and in terms of practical need,some information should be transferred to PC or other hardware system to finish some accessorial function,such as dsiplaying data,plotting data curve,data analyzing and so on.Main work of the paper:1.Designimg and debugging a set of hardware system.The system can finish the task of data acquisition and data processing,at the same time,it can communicate with other hardware system.2.compiling and debugging the system's real-time running program.including hardware circuit's initialization program,GFSINS's real-time navigation computing program. 3.Designimg and debugging PC application program.The program is mainly used to control and communicate with the other hardware system. |
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