<title>Optoelectronic sensing of image movement in focal plane of Earth's surveillance optical system</title>

Abstract

Quality of an image movement sensor may be evaluated by two parameters: precision (measurement error) and nominal speed (frequency bandwidth), both depending on the image moving and technical characteristics of the sensor. Measurement error being given, those characteristics may be optimized to provide the widest frequency band.In this paper such an optimization problem is considered for the optoelectronic sensor, which is a constituent part of an image stabilization system for a spaceborn high-resolution Earth's surveillance telescope, and some results of computer modeling of the sensor are presented.

<title>Dynamic aberration measurement in Earth observation adaptive optics systems</title>

“…In the latter subsystem compensation of the image movement can be provided by the movement of the CCDmatrix or by the movement of the electronic image (accumulated electrical charges) inside the CCD-matrix. We have chosen the last variant and investigated a method of zonal electronic image stabilization [4], a method of electro-mechanical image stabilization along the columns of the matrix [5], and a method of electro-mechanical image stabilization for rotating mini-satellites [5].…”