The Design Of Lower System Of The Hyperspectral Imager

Hyperspectral imager is an important load device of new remote sensing satellite.The lower of hyperspectral imager is controlled by the star computer. It is responsiblefor completing in-orbit operation scheduling of hyperspectral imager subsystems andprocessing integrated information. It manages and controls the operation of functionmodules of hyperspectral imager efficiently and reliably, monitor system status,coordinate system operation. It is in line with the main circuit of hyperspectral imager(CCD partial) to implement the Earth observation missionsAccording to the system requirements, this thesis serves the80C31as systemcontroller and the SJA1000as CAN bus controller to communicate the CAN bus of thestar host service,completes hardware and software design. Firstly the thesis analysesthe overall design requirements of the system, gives the overall functional blockdiagram of the system design. Secondly it describes the key technologies, such as thecentral processing circuit, the bus communication circuits, the data acquisition circuitand the data acquisition and CCD image measurement and control circuits and soon.Then it describes the system software design and gives the flow chart and parts ofthe source code of the main module of system.Finally it briefly describes the problemsduring testing and commissioning between the equipment and the entire sub-system.The equipment designed has been debugging completed and put into actualoperation.Tests show that the equipment is reliable and its performance is stable tomeet the design requirements.