Evaluation factor for photocathode detection in low-level-light night vision system

背景及目标	夜天光环境	光谱匹配系数 $α$
背景及目标	夜天光环境	New S₂₅	GaAs
山石	满月光	0.776 0	0.496 6
山石	晴朗星空	0.620 9	0.484 0
水泥路面	满月光	0.772 3	0.480 1
水泥路面	晴朗星空	0.626 3	0.484 3
涤纶军装	满月光	0.697 2	0.552 8
涤纶军装	晴朗星空	0.503 6	0.385 8
军用篷布	满月光	0.763 1	0.519 6
军用篷布	晴朗星空	0.581 5	0.453 8
军用吉普车	满月光	0.753 6	0.433 7
军用吉普车	晴朗星空	0.545 5	0.392 5

Table 2. Evaluation factors of New S₂₅ photocathode under full moonlight conditions

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Table 2. Evaluation factors of New S₂₅ photocathode under full moonlight conditions

参数	山石			水泥路面
参数	涤纶军装	军用篷布	军用吉普车	涤纶军装	军用篷布	军用吉普车
$\bar{α} (S, t)$	0.7366	0.7696	0.7648	0.7348	0.7677	0.7630
$\bar{α} (e, t)$	0.1333	0.1739	0.1922	0.1407	0.1813	0.1996
$C_{0}$	0.3002	0.0786	0.1756	0.3189	0.0935	0.1707
$δ$	5.4662	1.2808	2.7133	5.6450	1.4903	2.5852

Table 3. Evaluation factors of New S₂₅ photocathode under clear starlight conditions

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Table 3. Evaluation factors of New S₂₅ photocathode under clear starlight conditions

参数	山石			水泥路面
参数	涤纶军装	军用篷布	军用吉普车	涤纶军装	军用篷布	军用吉普车
$\bar{α} (S, t)$	0.5623	0.6012	0.5832	0.5650	0.6039	0.5859
$\bar{α} (e, t)$	0.0253	0.0350	0.0409	0.0278	0.0375	0.0434
$C_{0}$	0.3072	0.1220	0.3027	0.3264	0.1430	0.3220
$δ$	11.2181	3.9166	8.8539	11.3980	4.4451	9.1643

Table 4. Evaluation factors of GaAs photocathode under full moonlight conditions

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Table 4. Evaluation factors of GaAs photocathode under full moonlight conditions

参数	山石			水泥路面
参数	涤纶军装	军用篷布	军用吉普车	涤纶军装	军用篷布	军用吉普车
$\bar{α} (S, t)$	0.5247	0.5081	0.4652	0.5165	0.4999	0.4569
$\bar{α} (e, t)$	0.1333	0.1739	0.1922	0.1407	0.1813	0.1996
$C_{0}$	0.2201	0.0998	0.2255	0.2363	0.1192	0.2072
$δ$	5.3357	2.0844	4.2867	5.5320	2.4185	3.8305

Table 5. Evaluation factors of GaAs photocathode under clear starlight conditions

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Table 5. Evaluation factors of GaAs photocathode under clear starlight conditions

参数	山石			水泥路面
参数	涤纶军装	军用篷布	军用吉普车	涤纶军装	军用篷布	军用吉普车
$\bar{α} (S, t)$	0.4349	0.4689	0.4383	0.4351	0.4691	0.4384
$\bar{α} (e, t)$	0.0253	0.0350	0.0409	0.0278	0.0375	0.0434
$C_{0}$	0.3150	0.1215	0.3385	0.3305	0.1386	0.3538
$δ$	15.9579	5.4339	13.5398	15.9762	5.9898	13.7397

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Chaolong HU, Lei LIU, Yunsheng QIAN, Yongchao MO, Xiaofeng BAI, Feng SHI. Evaluation factor for photocathode detection in low-level-light night vision system[J]. Journal of Applied Optics, 2023, 44(3): 628

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Paper Information

Category: Research Articles

Received: Nov. 1, 2022

Accepted: --

Published Online: Jun. 19, 2023

The Author Email: LIU Lei (liu1133_cn@sina.com.cn)

DOI:10.5768/JAO202344.0304001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Calculation results of spectral matching factor

Table 1. Calculation results of spectral matching factor

Table 2. Evaluation factors of New S25 photocathode under full moonlight conditions

Table 2. Evaluation factors of New S25 photocathode under full moonlight conditions

Table 3. Evaluation factors of New S25 photocathode under clear starlight conditions

Table 3. Evaluation factors of New S25 photocathode under clear starlight conditions

Table 4. Evaluation factors of GaAs photocathode under full moonlight conditions

Table 4. Evaluation factors of GaAs photocathode under full moonlight conditions

Table 5. Evaluation factors of GaAs photocathode under clear starlight conditions

Table 5. Evaluation factors of GaAs photocathode under clear starlight conditions

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Table 2. Evaluation factors of New S₂₅ photocathode under full moonlight conditions

Table 2. Evaluation factors of New S₂₅ photocathode under full moonlight conditions

Table 3. Evaluation factors of New S₂₅ photocathode under clear starlight conditions

Table 3. Evaluation factors of New S₂₅ photocathode under clear starlight conditions