Abstract
The Space Solar Telescope (SST) is being developed in Beijing Astronomical Observatory. Two sets of star sensors are needed to fit the requirement of high accuracy attitude determination of SST. The Attitude Determination and Control System (ADCS) of SST is narrated in this paper. How to mount and use the Star Sensors on SST is introduced. The structure of the data handling system and the features such as the precision, field of view (FOV), mass and power consumption of the Star Sensor are given. To elevate accuracy affected by designing and manufacturing of optical lens, mechanical and electrical parts, a calibration correction should be applied. The development of algorithms based on 'triangle set' for the recognition of star patterns, especially the consideration of preventing SST from 'lost in space' is discussed too. The altitude of SST is calculated by the valid data of the Star Sensors and the Sun Guide Telescope. The test results shows that the Star Sensor researched and developed by us can be used not only for SST, but also for other satellites.
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