KEYWORDS: Gyroscopes, Filtering (signal processing), Sensors, Information fusion, Data fusion, Electronics, Data processing, Electronic filtering, Magnetic sensors, Algorithm development
We present an attitude acquisition module electronics design for the airborne stabilized platform. The design scheme, which is based on Integrated MEMS sensor ADIS16405, develops the attitude information processing algorithms and the hardware circuit. The hardware circuits with a small volume of only 44.9 x 43.6 x 24.6 mm3, has the characteristics of lightweight, modularization and digitalization. The interface design of the PC software uses the combination plane chart with track line to receive the attitude information and display. Attitude calculation uses the Kalman filtering algorithm to improve the measurement accuracy of the module in the dynamic environment.
The distortion of the collected images usually takes place since the attitude changes along with the flying aerocraft on
airborne remote sensing. In order to get original images without distortion, it is necessary to use professional
gyro-stabilized platform. In addition to this, another solution of correcting the original image distortion is to utilize later
geometric rectification using position & orientation system ( POS ) data. The third way is to utilize medium-accuracy
stabilized platform to control the distortion at a tolerant range, and then make use of the data obtained by high-solution
posture measure system to correct the low-quality remote sensing images. The third way which takes advantage of both
techniques is better than using only one of the two other ways. This paper introduces several kinds of structural forms of
gyro-stabilized platforms, and POS acquiring instruments respectively. Then, the essay will make some analysis of their
advantages and disadvantages, key technologies and the application experiment of the third method. After the analysis,
the thesis discusses the design of the gyro-stabilized platform. The thesis provides crucial information not only for the
application technology of gyro-stabilized platform and POS but also for future development.
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