Image stabilization in small satellite optoelectronic remote sensing systems

Optical image movement about an image receiver of a space-born remote sensing system causes degradation of spatial resolving power of the system. The report is dedicated to the problem of minimization of that degradation by means of image movement compensation with an image stabilization subsystem. Unknown parameters of the image movement are expressed through measured or calculated parameters of the satellite movement, and the structure of an electro-mechanic compensator connected to the CCD-matrix of the image receiver is elaborated. Stabilization errors caused by the input data errors, by spatial and temporal discretization, and by the operational errors are classified and analyzed. Based on that analysis, a method of minimization of the main component of the total stabilization error is suggested.