Accurate dynamic and static measuring device for laser communication terminals between satellites
A laser communication and measurement device technology, applied in optics, optical components, diversity/multi-antenna systems, etc., can solve problems such as difficult and large aperture
Inactive Publication Date: 2006-05-17
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
Due to the requirements of inter-satellite optical communication, the optical aperture of the equipment is relatively large, which makes this prior technology generally only able to meet the angle calibration with milliradian-level accuracy, and it is very difficult to achieve micro-radian-level accuracy. It takes a lot of money to achieve
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[0062] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0063] see first image 3 , Figure 4 , image 3 It is a schematic diagram of the placement of two rotating prisms in the high-precision dynamic and static measuring device of the inter-satellite laser communication terminal of the present invention, Figure 4 It is a schematic diagram of the optical path of the high-precision dynamic and static test of the inter-satellite laser communication terminal by the device of the present invention. It can be seen from the figure that the high-precision dynamic and static tester of the inter-satellite laser communication terminal of the present invention mainly includes: a collimator 1; two optical prisms and Drive and transmission device 2, and 3 is the inter-satellite laser communication terminal to be detected, and 4 is the tracking detector of the terminal to be detected. The optical prisms used ...
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A high-precision dynamic and static measurement device for an inter-satellite laser communication terminal, including a collimator, an optical prism, and a driving transmission device. The main feature is that the apex angles of the first optical prism and the second optical prism are equal. The configuration relationship is: When the main section of the first optical prism is the YOZ plane of the rectangular coordinate system, the thin end points to the negative direction of the Y axis, and is driven by the first stepping motor to rotate around the X axis; the main section of the second optical prism is in the XOZ plane, and the thin end points to the negative direction of the Y axis. The end points to the positive direction of the X axis and is rotated around the Y axis by the second stepper motor. The invention can precisely measure the dynamic and static properties of the space laser communication terminal at the level of micro-arc, and has the characteristics of high precision, simple structure, convenient processing and easy control.
Description
technical field [0001] The invention relates to inter-satellite laser communication, in particular to a high-precision dynamic and static measurement device for an inter-satellite laser communication terminal, which is mainly used for analog measurement of the precise tracking performance of an inter-satellite laser communication terminal. Background technique [0002] In inter-satellite laser communication, the divergence angle of the beam is very small, usually on the micro-arc scale, and the transmission distance is long. The technology of alignment, capture and tracking of inter-satellite laser communication terminals has become increasingly prominent. The system will lead to a large number of signal loss at the receiving end and a serious degradation of the performance of the entire system, so tracking and aiming is a key technology in the design of the entire satellite optical communication system. Before the flight test, a very important link is to conduct precise mea...
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IPC IPC(8): G02B17/00G02B17/04H04B7/10
Inventor 孙建锋刘立人云茂金万玲玉张明丽许楠
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI