The Design And Research On The Optical System Of The Space Remote Sensor

With the rapid development of focal plane detector and growing up of the technique. The technique of remote sensor developed very fast, especially the staring imaging technology becomes more and more important for its special superiority. It is smaller, lighter, simple optical-mechanical and low consumed power. In research of the staring imaging, it's important to design the optical system. For in the stationary orbit,staring imaging is the most appropriate form. So the focus and the diameter of the optical system is usually very large. That caused the design are diffcult. It is very important to design the optical system.In this dissertation ,mainly analyses the index of optical system ,First compared with different kinds of reflective optical system and concluded their characteristic,structure to determined that three mirror is the appropriate structure. Second based on the standard of CCD and the height of the camera work out the focal of this optical system is 36000mm. diameter is 4000mm, the moment field is 0.15°,the scanning field is 1.5°×0.9°and the moment coverage is 90×90km~2. The scanning coverage is 900×540km~2 Than analysed the scaning system material, structure and method.Than designed the optical system accord with the requirement. Considering two plan and comparing the difference and feasibility between two plans. Used two methods to evaluate the image quality and give the tolerance of this optical system.Otherwise, in this dissertation, more attention was paid on the connection of different distance and the image quality. Evaluate the image quality in different distance with astigmation, MTF and RMS.