An integrated test-bed for PAT testing and verification of inter-satellite lasercom terminals

Liren Liu; Lijuan Wang; Jianfeng Sun; Yu Zhou; Xianghong Zhong; De'an Liu; Aiming Yan; Nan Xu

doi:10.1117/12.731949

25 September 2007 An integrated test-bed for PAT testing and verification of inter-satellite lasercom terminals

Liren Liu, Lijuan Wang, Jianfeng Sun, Yu Zhou, Xianghong Zhong, De'an Liu, Aiming Yan, Nan Xu

Proceedings Volume 6709, Free-Space Laser Communications VII; 670904 (2007) https://doi.org/10.1117/12.731949
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

It is necessary, on the ground in a laboratory, to test the technical parameters and to verify the working performance for the optical pointing, acquisition and tracking (PAT) of an inter-satellite lasercom terminal. In this paper, we report a completed PAT test-bed for this aim. The test-bed works in a fully physical way and is an integration of a 2D optical scanner of two rotating prisms, a 2D fine beam deflector of two tilting optical wedges and a double-focus laser collimator, the overall aperture is about Φ440mm. The optical scanner is designed to scan the beam in the range of 30° with an accuracy of 100μrad and used to simulate the mutual movement between two satellites. The fine beam deflector has the maximum beam deviation of about 1mrad with a step of 0.5μrad and is used to measure the tracking error of a terminal. The collimator has the double focal lengths, respectively, of 1.5m and 10m, the former provides a wide view of field for the use in the acquisition process of the terminal and the latter a narrow view of field for the use in the tracking process. In this paper, the design and fabrication considerations of the PAT test-bed as well as the main specifications of the completed integrated test-bad are given.

Citation Download Citation

Liren Liu, Lijuan Wang, Jianfeng Sun, Yu Zhou, Xianghong Zhong, De'an Liu, Aiming Yan, and Nan Xu "An integrated test-bed for PAT testing and verification of inter-satellite lasercom terminals", Proc. SPIE 6709, Free-Space Laser Communications VII, 670904 (25 September 2007); https://doi.org/10.1117/12.731949

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