Study on the detection sensitivity of APS star tracker

Jie Li; Jinguo Liu; Guangze Li

doi:10.1117/12.783754

17 January 2008 Study on the detection sensitivity of APS star tracker

Jie Li, Jinguo Liu, Guangze Li

Proceedings Volume 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 67235F (2008) https://doi.org/10.1117/12.783754
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

Detection sensitivity is an important parameter of star tracker, which can express detection limit of the weakest detected visual star magnitude. Detection sensitivity of APS star tracker is related to APS parameters, optical system aperture and lens permeance rate, SNR, and so on. This paper, the expressions of APS star detected signal and APS noise are given, so signal-noise ratio (SNR) of star tracker can be obtained. And based on the theory inspecting signal from noise and optimal SNR threshold detection principle, the detection sensitivity model can be obtained. The corresponding APS star tracker detection limit is obtain based on APS IBIS5 and general optical system parameter design. When SNR threshold is 8.1 which can obtain 99.9% detection probability, we can calculate that the detection sensitivity is 6.5 visual magnitude.

Citation Download Citation

Jie Li, Jinguo Liu, and Guangze Li "Study on the detection sensitivity of APS star tracker", Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67235F (17 January 2008); https://doi.org/10.1117/12.783754

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