一種L波段相控陣微波輻射計射頻干擾檢測算法
doi: 10.11999/JEIT180203 cstr: 32379.14.JEIT180203
-
1.
北京航空航天大學(xué)電子信息工程學(xué)院 ??北京 ??100083
-
2.
中國空間技術(shù)研究院西安分院 ??西安 ??710100
Radio-frequency Interference Detection Algorithm for L-band Phased Array Microwave Radiometer
-
1.
School of Electronics and Information Engineering, Beihang University, Beijing 100083, China
-
2.
China Academy of Space Technology (Xi’an), Xi’an 710100, China
-
摘要:
目前，微波輻射計均面臨嚴(yán)重的射頻干擾(RFI)問題，尤其在低頻段。針對一種用于獲取海洋鹽度和土壤濕度的L波段相控陣微波輻射計，該文提出一種射頻干擾檢測算法。首先，簡單介紹了該L波段相控陣微波輻射計系統(tǒng)；隨后，詳細介紹該射頻干擾算法，其主要包括RFI初標(biāo)識、RFI滑動窗口1次標(biāo)識、RFI滑動窗口2次標(biāo)識和RFI擴展標(biāo)識等4個步驟；最后，采用該算法對L波段相控陣微波輻射計的實驗數(shù)據(jù)進行處理。實驗結(jié)果均表明：該算法能夠較好地檢測出射頻干擾異常數(shù)據(jù)，檢測性能較好。
Abstract:At present, microwave radiometers suffer from serious Radio Frequency Interference (RFI), especially in low frequency. In this paper, a radio frequency detection algorithm is proposed for L-band phased array radiometer, which is used to measure the sea surface salinity and soil moisture. First, the L-band phased array radiometer is introduced in briefly. Secondly, the radio frequency detection algorithm is introduced in details, which consists of the raw RFI flag, the RFI first moving–averaged window flag, the RFI second moving–averaged window flag and the expanded RFI flag. Finally, the experimental data obtained by the L-band phased array radiometer is processed with the proposed RFI detection algorithm. The results indicate that the proposed detection RFI algorithm can effectively detect the RFI contaminated abnormal data, and exhibits good detected ability.
-
表 1 L波段相控陣輻射計波束編號對應(yīng)掃描角(°)
波束編號 1 2 3 4 5 6 7 8 9 10 11 12 13 掃描角度 –30 –25 –20 –15 –10 –5 0 5 10 15 20 25 30 
下載: 導(dǎo)出CSV
表 3 觀測角33°時的Kurtosis值
波束5 波束6 波束7 波束8 波束9 原始數(shù)據(jù)的$\kappa $值 284.47 254.83 19.50 214.60 129.08 RFI后的$\kappa $值 2.84 2.91 2.83 2.85 2.73
下載: 導(dǎo)出CSV
表 4 觀測角51°時的Kurtosis值
波束5 波束6 波束7 波束8 波束9 原始數(shù)據(jù)的$\kappa $值 587.64 362.80 163.46 158.29 123.89 RFI后的$\kappa $值 2.57 2.58 2.91 2.73 2.70
下載: 導(dǎo)出CSV
-
張祖蔭, 林士杰. 微波輻射測量技術(shù)及應(yīng)用[M]. 北京: 電子工業(yè)出版社, 1995: 166–203.ZHANG Zuyin and LIN Shijie. Microwave Radiation Measurement Technology and Application[M]. Beijing: Electronic Industry Press, 1995: 166–203. OLIVA R, DAGANZO E, KERR Y H, et al. SMOS radio frequency interference scenario: Status and actions taken to improve the RFI environment in the 1400-1427 MHz passive band[J]. IEEE Transactions on Geoscience and Remote Sensing, 2012, 50(5): 1427–1439. doi: 10.1109/TGRS.2012.2182775 DAGANZO E, OLIVA R, KERR Y H, et al. SMOS radiometer in the 1400-1427 MHz passive band: Impact of the RFI environment and approach to its mitigation and cancellation[J]. IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(10): 4999–5007. doi: 10.1109/TGRS.2013.2259179 MISRA S and RUF C S. Detection of radio-frequency interference for the Aquarius radiometer[J]. IEEE Transactions on Geoscience and Remote Sensing, 2008, 46(10): 3123–3128. doi: 10.1109/TGRS.2008.920371 BRADLEY D, BRAMBORA C, WONG M E, et al. Radio-Frequency Interference (RFI) mitigation for the Soil Moisture Active/Passive (SMAP) radiometer[C]. Proceedings of International Geoscience and Remote Sensing Symposium, Melbourne, Australia, 2010: 2015–2018. doi: 10.1109/IGARSS.2010.5652482. AKSOY M, JOHNSON J T, MISRA S, et al. L-band radio-frequency interference observations during the SMAP validation experiment 2012[J]. IEEE Transactions on Geoscience and Remote Sensing, 2016, 54(3): 1323–1335. doi: 10.1109/TGRS.2015.2477686 International Telecommunications Union, Radio Regulations, vol. I[S], Geneva, Switzerland, 2008. 中華人民共和國無線電頻率劃分規(guī)定[S]. 2006.Regulation of radio frequency division in People's Republic of China[S]. 2006 LI L, GAISER P W, BETTENHAUSEN M H, et al. WindSat radio-frequency interference signature and its identification over land and ocean[J]. IEEE Transactions on Geoscience and Remote Sensing, 2006, 44(3): 530–539. doi: 10.1109/TGRS.2005.862503 NJOKU E G, ASHCROFT P, CHAN T K, et al. Global survey and statistics of radio-frequency interference in AMSR-E land observations[J]. IEEE Transactions on Geoscience and Remote Sensing, 2005, 43(5): 938–947. doi: 10.1109/TGRS.2004.837507 FENG Chengcheng, ZOU Xiaolei, ZHAO Juan. Detection of radio-frequency interference signals from AMSR-E data over the United States with snow cover[J]. Frontiers of Earth Science, 2016, 10(2): 195–204. doi: 10.1007/s11707-015-0509-4 官莉, 夏仕昌, 張思勃. 大面積水體上空星載微波輻射計的干擾識別[J]. 應(yīng)用氣象學(xué)報, 2015, 26(1): 22–31. doi: 10.11898/1001-7313.20150103GUAN Li, XIA Shichang, and ZHANG Sibo. Identifying the interference of space-borne microwave radiometer over large water area[J]. Journal of Applied Meteorological Science, 2015, 26(1): 22–31. doi: 10.11898/1001-7313.20150103 SKOU N, MISRA S, BALLING J E, et al. L-band RFI as experienced during airborne campaigns in preparation for SMOS[J]. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48(3): 1398–1407. doi: 10.1109/TGRS.2009.2031637 AKSOY M, PARK J, and JOHNSON J T. Joint analysis of radio frequency interference from SMOS measurements and from airborne observations[C]. Proceedings of General Assembly and Scientific Symposium Symposium, Istanbul, Turkey, 2011: 1–4. 盧海梁, 李青俠, 李炎, 等. 基于SMOS衛(wèi)星數(shù)據(jù)的中國地區(qū)L波段射頻干擾研究[J]. 微波學(xué)報, 2016, 32(1): 86–91. doi: 10.14183/j.cnki.1005-6122.201601019LU Hailiang, LI Qingxia, LI Yan, et al. A study of L-band radio frequency interference over China based on SMOS data[J]. Journal of Microwaves, 2016, 32(1): 86–91. doi: 10.14183/j.cnki.1005-6122.201601019 LU Hailiang, LI Qingxia, LI Yan, et al. Low-level radio-frequency interference detection algorithm based on European centre for medium-range weather forecasting for the soil moisture and ocean salinity mission[J]. Journal of Applied Remote Sensing, 2015, 9(1): 095996. doi: 10.1117/1.JRS.9.095996 盧海梁. 星載綜合孔徑微波輻射計校正和定標(biāo)及射頻干擾檢測[D]. [博士論文], 華中科技大學(xué), 2016.LU Hailiang. Correction & calibration and radio frequency interference detection for on-board aperture synthesis radiometers[D]. [Ph. D. dissertation], Huazhong University of Science & Technology, 2016. MISRA S and RUF C S. Analysis of radio frequency interference detection algorithms in the angular domain for SMOS[J]. IEEE Transactions on Geoscience and Remote Sensing, 2012, 50(5): 1448–1457. doi: 10.1109/TGRS.2011.2176949 LU Hailiang, LI Yinan, YU Rui, et al. A L-band phased array radiometer for sea surface salinity[C]. Proceedings of International Geoscience and Remote Sensing Symposium, Fort Worth, USA, 2017: 2935–2938. 牛雪杰, 崔華陽, 余銳. 一種用于微波輻射計的雙極化相控陣天線系統(tǒng)設(shè)計[J]. 空間電子技術(shù), 2015, 5: 14–17. doi: 10.3969/j.issn.1674-7135.2015.05.003NIU Xuejie, CUI Huayang, and YU Rui. A dual-polarized phased array antenna system of microwave radiometer[J]. Space Electronic Technology, 2015, 5: 14–17. doi: 10.3969/j.issn.1674-7135.2015.05.003 姜濤, 趙凱, 萬祥坤. L波段微波輻射計脈沖式干擾時域檢測方法研究[J]. 電子與信息學(xué)報, 2018, 40(7): 1539–1545. doi: 10.11999/JEIT170954JIANG Tao, ZHAO Kai, and WAN Xiangkun. Research on detection methods to periodic pulsed interference for L band microwave radiometer in time domain[J]. Journal of Electronics &Information Technology, 2018, 40(7): 1539–1545. doi: 10.11999/JEIT170954 KHAZAAL A, CABOT F, ANTERRIEU E, et al. A kurtosis-based approach to detect RFI in SMOS image reconstruction data processor[J]. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(11): 7038–7047. doi: 10.1109/TGRS.2014.2306713 -
計量
- 文章訪問數(shù): 1954
- HTML全文瀏覽量: 808
- PDF下載量: 74
- 被引次數(shù): 0
下載:
