Computation Model for Calculating Infrared Radiance of Aerial Target Based on Each Pixel Calibration of Refrigeration Infrared System

Fig. 3. Calibration gain coefficient matrix value $|G (x, y)|$ and bias matrix value $|B (x, y)|$ of refrigeration infrared system at different ambient temperatures. (a) Calibration gain coefficient matrix value; (b) bias matrix value

Download full size

Fig. 4. Comparison between traditional calibration results and each pixel calibration results. (a) Traditional calibration results; (b) gain coefficient matrix values; (c) bias matrix values

Download full size

Fig. 5. Diagram of equivalent data process method

Download full size

Fig. 6. Contrast between traditional calibration result and each pixel calibration result. (a) Traditional calibration result; (b) gain coefficient matrix value; (c) bias matrix value

Download full size

Fig. 7. Diagram of field verification experiment

Download full size

Fig. 8. Field verification experiment data

Download full size

Table 1. Comparison of calculation results between traditional method and ours

View table

Table 1. Comparison of calculation results between traditional method and ours

Temperature / $℃$		Target radiance $L$ /（ $W \cdot m^{- 2} \cdot s r^{- 1}$ ）			Relative error $δ$ /%		Deviation degree of error $γ$
$T_{1}$	$T_{2}$	Theoretical value	Traditional method	Ours	Traditional method	Ours	Traditional method	Ours
60	40	3.76	3.58	3.85	-4.79	2.39	0.225	0.153
80	50	6.61	7.49	6.60	13.31	-0.15	0.907	0.225
100	80	10.96	11.94	10.76	8.94	-1.82	0.995	0.221
80	40	6.61	7.66	6.74	15.89	1.97	1.057	0.172
100	50	10.96	11.68	10.85	6.57	-1.00	0.742	0.158
60	50	3.76	3.99	3.72	6.12	-1.06	0.256	0.110
50	40	2.76	2.55	2.76	-7.61	0	0.251	0.098
100	40	10.96	9.30	10.81	-15.15	-1.37	1.675	0.180

Table 2. Comparison of calculation results between traditional method and ours

View table

Table 2. Comparison of calculation results between traditional method and ours

Temperature / $℃$		Target radiance $L$ /（ $W \cdot m^{- 2} \cdot s r^{- 1}$ ）			Relative error $δ$ /%		Deviation degree of error $γ$
$T_{1}$	$T_{2}$	Theoretical value	Traditional method	Ours	Traditional method	Ours	Traditional method	Ours
110	90	13.83	15.48	12.80	11.93	-7.45	1.68	1.08
130	90	21.30	22.91	20.20	7.56	-5.16	1.69	1.21
130	110	21.30	25.66	21.11	20.47	-0.89	4.39	0.54
150	90	31.53	32.48	29.72	3.01	-5.74	1.12	1.90
150	130	31.53	37.78	30.56	19.82	-3.08	6.27	1.13
150	110	31.53	35.23	30.62	11.73	-2.89	3.74	1.08
200	130	72.94	76.92	69.49	5.46	-4.73	4.20	3.69
200	150	72.94	81.29	70.28	11.45	-3.65	8.46	2.96

Tools

Get Citation

Copy Citation Text

Shiqi Gan, Weichao Wang, Guangfu Yuan, Peijian Wu, Tongbang Wu. Computation Model for Calculating Infrared Radiance of Aerial Target Based on Each Pixel Calibration of Refrigeration Infrared System[J]. Acta Optica Sinica, 2024, 44(12): 1212001

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Instrumentation, Measurement and Metrology

Received: Jul. 10, 2023

Accepted: Aug. 15, 2023

Published Online: Jun. 12, 2024

The Author Email: Gan Shiqi (gsq1342@163.com)

DOI:10.3788/AOS231239

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology