Analysis of Radio Frequency Interference in AMSR2 7.3 GHz Channels over East Asian Ocean

Ying Wu; Meixin Li

doi:10.3788/LOP57.092801

Journals >Laser & Optoelectronics Progress >Volume 57 >Issue 9 >Page 092801 > Article

Laser & Optoelectronics Progress
Vol. 57, Issue 9, 092801 (2020)

Analysis of Radio Frequency Interference in AMSR2 7.3 GHz Channels over East Asian Ocean

Ying Wu^1、2、* and Meixin Li^1、2

Author Affiliations

¹Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, CMA Key Laboratory for Aerosol-Cloud-Precipitation, Nanjing University of Information Science & Technology, Nanjing, Jiangsu 210044, China;

²School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing, Jiangsu 210044, China;

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DOI: 10.3788/LOP57.092801 Cite this Article Set citation alerts

Ying Wu, Meixin Li. Analysis of Radio Frequency Interference in AMSR2 7.3 GHz Channels over East Asian Ocean[J]. Laser & Optoelectronics Progress, 2020, 57(9): 092801 Copy Citation Text

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Fig. 1. Spatial distribution of RFI signal observed under horizontal polarization with generalized RI index detection method

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Fig. 2. Spatial distribution of RFI signal observed under horizontal polarization with spectral difference method

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Center frequency /GHz	Polarization	Band width /MHz	Spatial resolution /km	Sensitivity /K
6.925	H/V	350	35×62	0.34
7.3	H/V	350	34×58	0.43
10.65	H/V	100	24×42	0.7
18.7	H/V	200	14×22	0.7
23.8	H/V	400	15×26	0.6
36.5	H/V	1000	7×12	0.7
89.0	H/V	3000	3×5	1.2

Table 1. AMSR2 channel characteristics

Date	7 GHz V-pol		7 GHz H-pol
Date	Generalized RFIindex method	Spectrumdifference method	Generalized RFIindex method	Spectrumdifference method
1	962	500	548	299
2	1085	451	672	295
3	1168	552	820	474
4	839	422	659	305
5	1107	510	821	416
6	1264	559	1387	555
7	1182	547	954	351
8	1234	588	1517	501
9	988	418	886	273
10	1030	437	993	270
11	1102	436	946	325
12	1402	548	1494	601
13	1830	609	2567	1046
14	1756	598	1786	637
15	1471	620	1105	485
16	1051	486	562	250

Table 2. Numbers of pixels of detected RFI signal

Ying Wu, Meixin Li. Analysis of Radio Frequency Interference in AMSR2 7.3 GHz Channels over East Asian Ocean[J]. Laser & Optoelectronics Progress, 2020, 57(9): 092801

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