GPS Measurement Platform And Application Research Based On Embedded ARM9

This thesis is mainly focus on the application of GPS position positioning and attitudemeasurement techniques on embedded ARM-Linux platform. Studiyed the ussing of carrierphase differential GPS technology to determine the two-dimensional attitude of vector.Bywriting a software program,ARM-Linux can be used as a basic GPS data measurementplatform to support the attitude angle measurement.First,in this thesis the consisting of GPS system,the principle of GPS positioning, thestructure of the GPS satellite navigation message,and calculation of the satellite’s positionwas introduced.hen,GPS attitude measurement principle was introduced,mainly including thethe frequendly used coordinates and their conversion relationship and the derivation of carrierphase method to calculate attitude angle.The overal scheme of the system was made,the U-dragon company’s FS2410was usedas the embedded ARM platform to recive and process the GPS data from GPS recevier,whichis based on LEA-6T chip,and the application software environments of embedded Linux wasbuilt.With the Qt sotfware,a C++program was developed to receive and save the GPS data.And,on the computer,a MATAB program was writened to achied the parsing of the ephemerisdata in the subframe of the satellite navigation message, calculating the position of satelliteand the dimensional attitude angle baseline vector was worked out.Finally, a brief summary about the whole work had been done in this thesis was made.