QQ客服 官方微博 反馈留言

浏览/检索结果: 共1条，第1-1条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Study on the detection sensitivity of APS star tracker (EI CONFERENCE) 会议论文 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China Li J.; Liu J.; Li G. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 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.