The working condition of the aircraft-borne or vehicle carries imaging systems is very complex

it has the great band width and the frequency crowded vibration

the performance of optical imaging system always been limited by these mechanical vibrations. The article started in the form of vibration of the optical imaging system as relatively

based on the knife-edge theory (line spread function)

used the optical modulation transfer function (MTF) as evaluate function

to make quantitative analysis of the impact on the various forms of the mechanical vibration

and analyze the influence of each kind of parameter to the modulation transfer function. Provided the rationale for optics machinery's intensity、the rigidity、and the precision design. Combining engineering practice

proposed the concrete measures to reduce the impact of vibration on the imaging quality.