Predistortion Arithmetic on Low Sidelobe Pulse Compression Signal for Spaceborne Weather Radar

被引：0

作者：

Zhu, Di ^{[1
]}

Dong, Xiaolong ^{[1
]}

机构：

[1] Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China

来源：

2008 INTERNATIONAL WORKSHOP ON EDUCATION TECHNOLOGY AND TRAINING AND 2008 INTERNATIONAL WORKSHOP ON GEOSCIENCE AND REMOTE SENSING, VOL 1, PROCEEDINGS | 2009年

关键词：

pulse compression; very low sidelobes; nonlinear; predistortion; SOR; spaceborne weather radar; ONBOARD;

D O I：

10.1109/ETTandGRS.2008.76

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Pulse compression with very low sidelobes is one of challenges in the design of spaceborne weather radar. To detect the weak echoes of clouds occurring near the strong echoes of sea surface, sidelobe performance below -60db is needed in the pulse compression system. To achieve such low sidelobes, high SNR and linearity are required in the radar system. But in spaceborne radar system, the transmitter often works at saturation point to get high output power and high efficiency. So a successive overrelaxation (SOR) iterative method of digital predistortion is applied here to ensure the sidelobe performance and high efficiency of PA. A test system based on RFPA, ESG and VSA is carried out to verify and optimize the predistortion arithmetic.

引用

页码：476 / 478

页数：3

共 9 条

[1] An onboard processor and adaptive scanning controller for the second-generation precipitation radar
Fischman, MA
Berkun, AC
Chun, W
Im, E
Andraka, RJ
[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2005, 43 (04): : 802 - 812
[2] Kim W., 2004, High Freq. Electron, V3, P18
[3] Development of precipitation radar onboard the Tropical Rainfall Measuring Mission (TRMM) satellite
Kozu, T
Kawanishi, T
Kuroiwa, H
Kojima, M
Oikawa, K
Kumagai, H
Okamoto, K
Okumua, M
Nakatsuka, H
Nishikawa, K
[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2001, 39 (01): : 102 - 116
[4] Nonideal effects of reconstruction filter and I/Q imbalance in digital predistortion
Li, MY
Deng, JX
Larson, LE
Asbeck, PM
[J]. 2006 IEEE RADIO AND WIRELESS SYMPOSIUM, PROCEEDINGS, 2006, : 259 - 262
[5] MAHAFZA BR, 2004, MATLAB SIMULATIONS R, P235
[6] SADOWY G, 2001, 2001 AER C BIG SKY M, V4, P1811
[7] SUNG MK, 2006, IEICE T COMMUN, V89, P1897
[8] VARGA R., 1999, Springer Ser. Comput. Math., V27, DOI DOI 10.1007/978-3-642-05156-2
[9] YAN JY, 2005, CHINESE J ELECTRON, V33, P2139

← 1 →