A performance evaluation method of wolter-i type X-ray optical mirror

Abstract

The invention relates to a Wolter‑I type X-ray optical reflective lens performance evaluation method, which belongs to the field of space optics technology; Step 1, select the optical reflective lens; Step 2, divide the slope error measurement grid and roundness on the outer wall of the optical reflective lens Error measurement grid; step 3, measure the slope error h k,i , roundness error and actual radius r j ; Step 4, calculate the conversion slope error data h' k,i ; And reconstruct the fitting mirror surface according to the conversion slope error data; Step 5, set up an incident ray from the parabolic primary mirror into the optical reflector; Step 6, determine the normal vector of the first reflection point a, a point and the first reflection Step 7, determine the second reflection point b, the normal vector and the exit direction after the second reflection; Step 8, judge the performance of the optical mirror according to the distribution range of all focus points; the present invention will accuracy High, small amount of calculation, high efficiency.

Description

technical field [0001] The invention belongs to the technical field of space optics and relates to a Wolter-I type X-ray optical reflector performance evaluation method. Background technique [0002] X-ray pulsar navigation is suitable for fully autonomous navigation of spacecraft in near-Earth space, deep space exploration, and interstellar flight. It can provide comprehensive navigation information such as position, velocity, attitude, and time for most space mission spacecraft, and realize the navigation of spacecraft. Completely autonomous navigation has the advantages of strong reliability, good stability, high accuracy, and wide applicability. It is a new type of autonomous navigation technology with great development potential, and it has extremely important engineering practical value and strategic research significance. [0003] The core of the X-ray pulsar navigation sensor is the X-ray optical lens. As an X-ray optical lens with high angular resolution and strong...

AI Technical Summary

Problems solved by technology

Most of the traditional optical performance analysis methods are aimed at the ideal surface shape to verify the design, and cannot obtain the real optical performance of the lens; although some performance analysis methods take the surface shape error into account, they have poor accuracy and low efficiency, and do not target grazing incidence reflection. Optimizing the characteristics of the lens is not suitable for efficient, accurate and objective evaluation of the performance of Wolter-I X-ray optical mirrors

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