Angle measurement precision detecting device of aspect angle monitor for satellite

Abstract

The invention discloses an angle measurement precision detecting device of an aspect angle monitor for a satellite. A small plane mirror is connected to a mounting base plane position of the aspect angle monitor; the aspect angle monitor for the satellite is arranged on a two-dimension inclined platform and is placed on a two-dimension translation platform; a double-faced simulation swing mirror is arranged on a three-dimension adjusting platform and is placed on a digital display turntable; a first autocollimator and a second autocollimator are placed on a lifting support; the two-dimension translation platform, the digital display turntable and the lifting support are placed on a table top of a detection platform; a central spindle is sleeved in a central hole of the digital display turntable; a standard circular device is placed on a standard block and is close to the central spindle; laser beams emitted by a laser align with a central prism of a five-mirror reflector to form a detection standard optical axis; a dial indicator is fixed on the detection platform; a gauge block is placed above the digital display turntable and between the aspect angle monitor for the satellite and the double-faced simulation swing mirror; one face of the gauge block is close to the mounting base plane of the aspect angle monitor for the satellite; and the other face of the gauge block is close to a first optical surface of the double-faced simulation swing mirror.

Description

technical field [0001] The invention belongs to the field of precision testing, and in particular relates to a detection device for angle measurement accuracy of a satellite scanning angle monitor. Background technique [0002] In recent years, with the rapid development of communications, space science and earth observation, the application requirements for satellite scanning measurement systems have become more and more urgent. As the host of a satellite scanning measurement system, the scanning angle monitor is mainly used to dynamically detect the scanning of the scanning mirror, and complete the fixed-point measurement of the scanning angle of the scanning mirror, so as to ensure the accurate measurement, transmission and image processing and analysis of the scanning position signal normal operation of the system. Therefore, it is very important to detect the angle measurement accuracy, which is the core indicator of the scan angle monitor. [0003] The important opti...

AI Technical Summary

Problems solved by technology

At present, the angle measurement of circular indexing and angle devices is the measurement of the accuracy of the outer angle, but for the measurement of the accuracy of the inner angle of the scanning angle monitor, there is no ready-made detection method, and there is no relevant introduction worth learning or reference value after consulting the relevant literature at home and abroad.

[0004] In addition, in order to ensure the smooth spherical surface of the spherical mirror composed of five-fold mirrors, the inner angle of each reflective prism is required to be 1°6′12″±5″, and the stability of the angle measurement accuracy is required to be 1″, so for the scan angle monitor measurement Difficulties in angular accuracy detection include: (1) It is not easy to establish a benchmark for internal angle detection; (2) The monitoring accuracy and detection reliability are not high, and the repeatability and reproducibility are poor

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