Design of Optical System for UAV-Borne Ultralow-Altitude Wide-Coverage Remote Sensing Camera

Jiahui Li; Fenli Tan; Chenxin Zeng; Yiqun Ji

doi:10.3788/AOS202141.1422001

Acta Optica Sinica, Volume. 41, Issue 14, 1422001(2021)

Design of Optical System for UAV-Borne Ultralow-Altitude Wide-Coverage Remote Sensing Camera

Jiahui Li^1,2,3, Fenli Tan^1,2,3, Chenxin Zeng^1,2,3, and Yiqun Ji^1,2,3、*

Author Affiliations

¹School of Optoelectronic Science and Engineering, Soochow University, Suzhou, Jiangsu 215006, China

²Key Laboratory of Advanced Optical Manufacture Technologies of Jiangsu Province, Soochow University, Suzhou, Jiangsu 215006, China

³Key Laboratory of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou, Jiangsu 215006, China

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Figures & Tables(12)

Fig. 1. Optical imaging diagram of monocentric symmetric objective

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Fig. 2. Optical layout of monocentric symmetric objective

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Fig. 3. Imaging performance of monocentric symmetric objective at the optimal image surface when the flight altitude is 50 m. (a) Spot diagram; (b) ray fan

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Fig. 4. Optical layout of relay lens system

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Fig. 5. Single-channel imaging optical layout

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Fig. 6. MTF of single-channel imaging optical system at different flight altitudes. (a) 20 m; (b) 50 m; (c) 80 m

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Fig. 7. Spot diagram of single-channel imaging optical system at different flight altitudes. (a) 20 m; (b) 50 m; (c) 80 m

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Fig. 8. Field curvature/distortion curve of single-channel imaging optical system at different flight altitudes. (a) 20 m; (b) 50 m; (c) 80 m

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Fig. 9. Multi-channel imaging optical layout

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Table 1. Parameters in the intermediate image surface equation when the flight altitude is 50 m
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Table 1. Parameters in the intermediate image surface equation when the flight altitude is 50 m
Parameter c k α₁ α₂ α₃ α₄ … α₈
Value -0.01 -8.043×10^-5 0 1.403×10^-10 0 0 … 0

Table 2. Axial displacement of the optimal intermediate image surface at different flight altitudes relative to 50 m and evaluation results of the spot diagram

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Table 2. Axial displacement of the optimal intermediate image surface at different flight altitudes relative to 50 m and evaluation results of the spot diagram

Altitude /m	Axial displacement relativeto the optimal intermediateimage surface of 50 m /μm	GEO radius of spot diagram /μm				RMSE(relative to 50 m)
Altitude /m		0°	35°	49°	66°	RMSE(relative to 50 m)
20	+0.301	0.325	0.317	0.332	0.314	0.0096
30	+0.133	0.306	0.302	0.322	0.313	0.0047
40	+0.050	0.322	0.315	0.333	0.322	0.0086
60	-0.033	0.336	0.327	0.343	0.330	0.0188
70	-0.057	0.331	0.323	0.340	0.329	0.0154
80	-0.075	0.328	0.320	0.338	0.327	0.0132

Table 3. Aspheric surface parameters
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Table 3. Aspheric surface parameters
Serial No. Radius /mm Conic Semi-diameter /mm
3 -32.126292 1.53 5.4

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Jiahui Li, Fenli Tan, Chenxin Zeng, Yiqun Ji. Design of Optical System for UAV-Borne Ultralow-Altitude Wide-Coverage Remote Sensing Camera[J]. Acta Optica Sinica, 2021, 41(14): 1422001

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Paper Information

Category: Optical Design and Fabrication

Received: Jan. 6, 2021

Accepted: Feb. 22, 2021

Published Online: Jul. 11, 2021

The Author Email: Ji Yiqun (jiyiqun@suda.edu.cn)

DOI:10.3788/AOS202141.1422001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Parameters in the intermediate image surface equation when the flight altitude is 50 m

Table 1. Parameters in the intermediate image surface equation when the flight altitude is 50 m

Table 2. Axial displacement of the optimal intermediate image surface at different flight altitudes relative to 50 m and evaluation results of the spot diagram

Table 2. Axial displacement of the optimal intermediate image surface at different flight altitudes relative to 50 m and evaluation results of the spot diagram

Table 3. Aspheric surface parameters

Table 3. Aspheric surface parameters