New Algorithm and Analysis of Exponential Iterative Inversion for Aerosol Lidar

Device	Parameter	Description
Transmitter	Laser	Nd∶YAG
	Exciting wavelength /nm	355 or 1064
	Nominal pulse energy /mJ	300@354.73 nm （adjustable），
	Nominal pulse energy /mJ	290@1064.20 nm （adjustable）
	Pulse repetition frequency /Hz	10
	Range resolution /m	3.75
	Pulse duration / ns	8
Receiver	Telescope type	Cassegrain
	Diameter of telescope/mm	254
	Field of view / mrad	0.5
	Optic fiber diameter /mm	0.8
Polychrotor	Central wavelength （CW） of IFx （x=1‒4） /nm	1064.20，852.70，386.67，354.73
	FWHM of IFx （x=1‒4） /nm	0.3，1.0，1.0，0.3
	Transmittance of IFx for CW	60% for each
	Blocking level of IFx	OD6 for each
Scanning module	Azimuth angle range /（°）	0‒360
	Elevation angle range /（°）	-45‒45
	Scanning resolution /（°）	0.01
	Scanning velocity /［（°）·s^-1］	0.01‒15.00 （adjustable）

Table 2. Comparison of inversion algorithm results on March 16 at 05:47
View table
Table 2. Comparison of inversion algorithm results on March 16 at 05:47
Method $a (z_{c}) / k m^{- 1}$ Relative error /% Iteration times Consume time /μs
1 0.0365 13.80 5 8
2 0.1314 23.42 100 47

Table 3. Comparison of inversion algorithm results on February 1 at 07:09
View table
Table 3. Comparison of inversion algorithm results on February 1 at 07:09
Method $a (z_{c}) / k m^{- 1}$ Relative error /% Iteration times Consume time /μs
1 0.0381 14.80 5 10
2 0.1724 28.60 100 35

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Yingchun Gao, Shichun Li, Feilong Wei, Haitao Duan, Dengxin Hua, Yufeng Wang, Fei Gao. New Algorithm and Analysis of Exponential Iterative Inversion for Aerosol Lidar[J]. Laser & Optoelectronics Progress, 2024, 61(23): 2301005

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