Numerical Simulation and Analysis of Sky Background Noise in Satellite Laser Ranging

Botao Lü; Ning An; Yanning Zheng; Zequn Lü; Xingwei Han

doi:10.3788/CJL240661

Chinese Journal of Lasers, Volume. 52, Issue 2, 0210001(2025)

Numerical Simulation and Analysis of Sky Background Noise in Satellite Laser Ranging

Botao Lü^1,2, Ning An^1、*, Yanning Zheng^1,2, Zequn Lü^1,2, and Xingwei Han^1、**

¹Changchun Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Changchun 130117, Jilin , China

²University of Chinese Academy of Sciences, Beijing 100049, China

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Figures & Tables(12)

Fig. 1. Overall architecture of SLRART software

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Fig. 2. Flowchart of SLRART calculation

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Fig. 3. Interface of SLRART software: calculation of atmospheric transmittance

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Fig. 4. Interface of SLRART software: calculation of sky background radiation

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Fig. 5. Interface of SLRART software: calculation of sky background noise rate

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Fig. 6. Distribution of sky background noise rate during full moon

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Fig. 7. Variation of sky background noise rate at different time periods

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Fig. 8. Measured SLR system false alarm rate under different meteorological conditions

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Table 1. Atmospheric transmittance calculated by SLRART and measured by atmospheric transmittance meter (450 nm)

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Table 1. Atmospheric transmittance calculated by SLRART and measured by atmospheric transmittance meter (450 nm)

No.	Elevation angle /（°）	Transmittance		Relative error /%
No.	Elevation angle /（°）	SLRART	Measurement	Relative error /%
Mean				4.269
1	49.93	0.458	0.446	2.729
2	46.73	0.440	0.419	5.133
3	43.47	0.420	0.411	2.116
4	40.20	0.397	0.396	0.225
5	36.93	0.370	0.367	0.861
6	33.63	0.340	0.350	2.852
7	30.44	0.308	0.295	4.237
8	27.25	0.271	0.260	4.313
9	23.13	0.219	0.194	12.599
10	21.57	0.197	0.183	7.629

Table 2. Atmospheric transmittance calculated by SLRART and measured by atmospheric transmittance meter (500 nm)

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Table 2. Atmospheric transmittance calculated by SLRART and measured by atmospheric transmittance meter (500 nm)

No.	Elevation angle /（°）	Transmittance		Relative error /%
No.	Elevation angle /（°）	SLRART	Measurement	Relative error /%
Mean				5.735
1	49.93	0.457	0.442	3.476
2	46.69	0.439	0.461	4.875
3	43.56	0.419	0.407	2.987
4	40.28	0.396	0.420	5.883
5	37.07	0.370	0.360	2.781
6	33.79	0.340	0.356	4.484
7	30.62	0.308	0.323	4.577
8	27.30	0.271	0.285	5.100
9	24.09	0.230	0.251	8.303
10	20.77	0.184	0.161	14.884

Table 3. Sky background noise rate at different observation azimuth angles and elevation angles

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Table 3. Sky background noise rate at different observation azimuth angles and elevation angles

Beijing Time	Elevation angle /（°）	Azimuth angle /（°）	Noise rate /MHz		Relative error /%
Beijing Time	Elevation angle /（°）	Azimuth angle /（°）	SLRART	Measurement	Relative error /%
Mean					9.774
13：20：40	41.50	73.98	15.468	13.955	10.842
13：21：00	42.19	68.79	14.124	13.099	7.825
13：22：00	44.14	43.98	9.994	11.526	13.292
13：23：40	47.34	337.89	8.197	9.585	14.481
13：24：00	47.97	329.31	8.764	9.403	6.797
13：25：00	49.83	313.19	10.264	9.894	3.740
13：26：00	51.64	304.60	11.327	10.875	4.156
13：27：00	53.38	299.28	12.069	12.810	5.785
13：28：20	55.54	294.54	12.756	14.951	14.681
13：29：40	57.47	291.13	13.244	15.457	14.317
13：30：00	57.90	290.40	13.347	15.352	13.060
13：31：00	59.05	288.41	13.626	14.862	8.317

Table 4. Variation of false alarm rate with time while observing Compass-G8

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Table 4. Variation of false alarm rate with time while observing Compass-G8

Beijing time	Solar altitude angle /（°）	Solar azimuth angle /（°）	Solar angle /（°）	False alarm rate
13：55	50.19	239.2	61.021	0.914
15：05	38.52	256.0	77.058	0.467
16：25	24.20	271.0	95.974	0.412
17：13	15.58	279.0	107.37	0.498
18：12	5.26	288.8	121.48	0.302

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Botao Lü, Ning An, Yanning Zheng, Zequn Lü, Xingwei Han. Numerical Simulation and Analysis of Sky Background Noise in Satellite Laser Ranging[J]. Chinese Journal of Lasers, 2025, 52(2): 0210001

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Paper Information

Category: remote sensing and sensor

Received: Mar. 6, 2024

Accepted: Jun. 20, 2024

Published Online: Jan. 16, 2025

The Author Email: An Ning (ann@cho.ac.cn), Han Xingwei (hanxw@cho.ac.cn)

DOI:10.3788/CJL240661

CSTR:32183.14.CJL240661

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology