Design And Realization Of Attitude Measurement System Based On ARM+DSP

The ocean currents, waves and other factors will have an influence on a ship duringsailing. The change of attitude causes the satellite antenna system not to receive the signalprecisely. So a high-end antenna system is very required to ensure the stability of receivingdigital signals. Attitude measurement system is an important part of the antenna system,which is responsible for satellite control systems to give two significant parameters(azimuth and elevation). The thesis studies the attitude measurement system of the marinesatellite antenna. AE frame structure as the object of study is compared to three-axisframework program in laboratory, and then the system is build.In the overall design, first of all, the advantages and disadvantages of different sensorcombinations including Electronic Compass, GPS, Micro Inertial Sensor Unit is analyzed.Secondly, the selection of master control, the antenna frame structure, and the sensorinstallation location are discussed. Then the general scheme and system framework isdesigned. In the theoretical part, several common attitude update algorithm (Euler AngleMethod, the Direction Cosine Method, the Quaternion Method) and Azimuth and elevationof the calculation method in the static and dynamic conditions is analyzed and discussed. Atthe same time, Matlab simulation is made.Finally the paper presented the concrete system design,including hardware disign andsoftware implementation.Hardware design mainly includes the interface circut from MIMU,GPS, Electronic Compass to TMS320F28335, and includes the ARM master control systemcomponents (including the interface circuit of LCD screen with touch screen, RS232, datarecording card, NandFlash/NorFlash, USB, JTAG etc). The software part mainly discussesthe information acquisition process from DSP to ADIS16350module, GPS module, anelectronic compass module, and discusses cutting and transplanting embedded LinuxOperating System, writing drivers, transplanting Qt library, and programming humancomputer interaction interface.