Airborne Infrared Camera Attitude Inertial Measurement System Hardware Platform

Aviation filming of the Unmanned aerial vehicles is a process, which takes UAV as the aerial platform, uses airborne remote sensing device such as infrared camera, light optical camera, infrared scanners to get information, processes image information with computers, and and made into image according to a certain accuracy requirement. In order to meet the needs of special tasks and the modern war, this thesis designs an airborne infrared camera’s inertial measurement system based on MEMS.First, this thesis puts forward the hardware platform design scheme of the airborne infrared camera’s attitude inertial measurement system. The system uses the GPS receiver to obtain satellite time synchronization signal, the high precision inertial navigation for unmanned aerial vehicle’s course of the information, the low precision of MEMS inertial navigation for measurement of airborne camera attitude angle, at the same time, MEMS inertial navigation realizes transfer alignment with high precision inertial navigation, so that the large drifting error can be calibrated, which belongs to the low-precision MEMS inertial navigation. MEMS inertial navigation makes use of the error compensation algorithm to calculate gyroscope and accelerometer measurement information, by calculating software to calculate the attitude angle, the attitude angle is output to control chip and control motor rotation, so that the camera can rotate and photo according to the braking requirements.Second, this paper analyses the characteristics and performance requirements of attitude inertial measurement system and uses TI’s TMS320C6747as information processing module of the system, it is mainly used for receiving various sensor information, execute the corresponding decoding software and calculating the needed data. On this basis, this thesis focuses on attitude inertial measurement system hardware circuit implementation, as well as the module design and debugging of the hardware platform of the data acquisition, processing, calculating and data output.Finally, this thesis introduces the overall performance test of attitude inertial measurement system. Test results indicate that the hareware platform of the airborne infrared camera’s attitude inertial measurement system can meet the demand of the function of the system. It has the very good research value and application prospect.