Atmosphere Temperature Profiling and a Fusion Algorithm Based on Polarization HSRL and MWR

Jingjing LIU; Kailing LI; Zixiang XU; Jingzhe PANG; Jun WANG; Qing YAN; Dengxin HUA

doi:10.3788/gzxb20215007.0701001

Acta Photonica Sinica, Volume. 50, Issue 7, 203(2021)

Atmosphere Temperature Profiling and a Fusion Algorithm Based on Polarization HSRL and MWR

Jingjing LIU, Kailing LI, Zixiang XU, Jingzhe PANG, Jun WANG, Qing YAN, and Dengxin HUA^*

Author Affiliations

School of Mechanical and Precision Instrument Engineering， Xi'an University of Technology， Xi'an710048， China

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Figures & Tables(9)

Fig. 1. Spectroscopic system diagram of polarized high spectral resolution lidar

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Fig. 2. Range-corrected signals under different channels from polarized HSRL

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Fig. 3. Atmosphere vertical temperature profiles from lidar， Microwave radiometer （MWR）， and sounding balloon between 0 and 10 km on 20：00， August 7， 2020

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Fig. 4. Comparison of atmosphere temperature profiles from lidar， MWR， and splicing data

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Fig. 5. The correlations of atmosphere temperature profiles from lidar， MWR， and splicing data

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Table 1. System parameters of polarized HSRL

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Table 1. System parameters of polarized HSRL

	Parameters	Values
Emitter and receiver system	Laser wavelength	354.7 nm
	Pulsed energy	50 mJ
	Repetition frequency	10 Hz
	Spectral linewidth	90 MHz
	Diameter of telescope	250 mm
	Field angle	0.1 mrad
Spectroscopic system	Polarization beam splitter	T_p > 97%，T_s< 1% R_s > 99.5%，R_p < 5%
	Transmission exctinction ratio	1 000∶1
	Quater-wave plate	Precision of phase delay：<λ/100
Detector	PMTs	Hamamatsu R7056
	Quantum efficiency	0.23 @355 nm

Table 2. Performance parameters of the Filter

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Table 2. Performance parameters of the Filter

Item	Parameters
FPE filter	FPE₁	FPE₂	FPE₃
Frequency shift	0 GHz	+2.7 GHz	+1.25 GHz
FWHM	340 MHz	340 MHz	340 MHz
Mie rejection	/	4×10^-7	1 $\times$ 10^-5
Rayleigh transmittances	/	1.5%	4%
Temperature sensitivity	/	-0.011%/K	0.038%/K
Set temperature	309.5 K	313 K	311.2 K
FSR	10 GHz
T_peak	0.6

Table 3. System parameters of microwave radiometer
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Table 3. System parameters of microwave radiometer
Parameters Values
Type MP3156A
Accuracy 0.1~1 K
Channels 22.234，23.034，23.834，26.234，30.000，51.248，52.280，53.848，54.940，56.660，57.288，58.800

Table 4. Temperature splicing of microwave radiometer and lidar
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Table 4. Temperature splicing of microwave radiometer and lidar
Effective detection altitude （x₀） x₀<1 km 1≤x₀<4 km 4≤x₀<10 km x₀=10 km
Values （A） A=0 1~x₀km： $A = \frac{z - z_{1}}{x_{0} - z_{1}}$ 1~4 km： $A = \frac{z - z_{1}}{z_{2} - z_{1}}$ A=1
x₀~4 km：A=0 4~x₀km： $A = \frac{z - z_{1}}{x_{0} - z_{1}}$
4~10 km：A=0 x₀~10 km：A=0

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Jingjing LIU, Kailing LI, Zixiang XU, Jingzhe PANG, Jun WANG, Qing YAN, Dengxin HUA. Atmosphere Temperature Profiling and a Fusion Algorithm Based on Polarization HSRL and MWR[J]. Acta Photonica Sinica, 2021, 50(7): 203

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