Space Target Optical Characteristics and SNR Calculation Model on Sky Screen

作者：Li, Hanshan^*

来源：IEEE Sensors Journal, 2016, 16(4): 912-917.

DOI：10.1109/JSEN.2015.2493183

• Sky-screen
• space target
• optical characteristics
• photoelectric detection
• SNR

To improve the detection performance and dynamic target coordinate testing accuracy in sky-screen measurement system, this paper proposes the out-of-focus technology to design sky-screen's optical detection system, studies the target's spatial coordinates calculation method, and sets up the signal-to-noise ratio (SNR) calculation model of sky screen. According to the illumination distribution function of target's imaging facula, the background illumination and the photosensitive surface size of the photoelectric detection receiver, the output voltage calculation function, and target optical characteristics calculation function were derived, the change regulation of the output voltage in different background illuminations was analyzed, and the relation of SNR and the target's imaging facula size in sky-screen optical detection system was discussed. Through calculation and experiment, the results find the SNR of new sky screen has increased by nearly 1.4 times, it show the space target optical characteristics function, and the SNR calculation model of sky-screen is correct and feasible.

• 出版日期2016-2
• 单位西安工业大学