Dynamic Closed-loop Test for Real-time Drift Angle Adjustment of Space Camera on the Earth

In order to eliminate the influence of aircraft attitude angle to the image quality of space camera, and assure that the drift angle of space camera could be accurately adjusted at the orbit, a novel closed-loop test method is provided for real-time drift angle adjustment of space camera on the Earth. A long focal length dynamic aim generator is applied to simulate the image motion and the variety drift angle, and to detect the precision of the image motion compensation machinery and the capability of the drift angle control system. The computer system is used to control the dynamic aim generator, accomplish the data processing, transmit and receive the data information. The seamless connection and the data transmission between the aim generator and the aircraft simulation devices are constituted. The command, parameter and drift angle data transmitted by the simulation devices are received by the space camera at the real time, then the photos are taken and the draft angle is adjusted simultaneously. It is shown that the drift angle can be accurately tracked by the space camera at the real time, and the detective method satisfies the test requirement.