Study on Temperature Compensative Technique in Microwave Radiometer Detection System

doi:10.13190/jbupt.200802.5.sunhy

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (2): 5-9.doi: 10.13190/jbupt.200802.5.sunhy

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Study on Temperature Compensative Technique in Microwave Radiometer Detection System

SUN Hong-yan1,2 ， ZHAO Kai1

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Science, Changchun 130012, China;
2. Graduate University , Chinese Academy of Science, Beijing 100049,China

Received:2007-12-22 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
Contact: SUN Hong-yan

Abstract

Abstract:

Aiming at nonlinearity measurement error of detection system caused by the change of the environment temperature, a new Chebyshev fitting algorithm is proposed for detection system temperature compensation. The temperature compensative technique can be validated by the post-correction output voltage curve and the correction output voltage curve showed in the same figure. The curves are gained when Square-law detector system works on the dynamic range. Utilizing soft data processing to implement the Chebyshev algorithm, not only the measurement error is decreased, but the system noise caused by the additional electron device is also eliminated. Using compensative technique in the microwave radiometer, the accuracy and linearity of such system is optimized, and the instrument is more reliable for the real-time observation on airborne or ground platform.

Key words: microwave radiometer, Square-law detector system, nonlinearity coefficient, temperature compensation, Chebyshev fitting algorithm

CLC Number:

TP732.1

SUN Hong-yan1,2 ， ZHAO Kai1. Study on Temperature Compensative Technique in Microwave Radiometer Detection System[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(2): 5-9.

References

[1] 肖志辉, 张祖荫, 郭伟. 地基、空基、星基微波辐射计定标技术概览[J]. 遥感技术与应用, 2000, 15(2): 113-120. Xiao Zhihui, Zhang Zuyin, Guo Wei. Review:the calibration of ground-based, airborne and satellite-borne microwave radiometers[J]. Remote Sensing Technology and Application, 2000, 15(2): 113-120.
[2] 彭树生, 李兴国. 微波辐射计的功率非线性对标定天线温度的影响[J]. 微波学报, 1997, 13(4): 353-357. Peng Shusheng, Li Xingguo. Effect of power-nonlinearity in a microwave radiometer on antenna temperature interpolated with aperture calibration[J]. Journal of Microwaves, 1997, 13(4): 353-357.
[3] Reinhardt V S, Shih Y C, Toth P A, et al. Methods for measuring the power linearity of microwave detectors for radiometric applications[J]. IEEE Trans Microwave Theory and Techniques, 1995, 43(4): 715-720.
[4] 徐达旺, 李志亮. 二极管式微波功率检波器的温度补偿技术[J]. 电子测量技术, 2006, 29(6): 172-174. Xu Dawang, Li Zhiliang. Temperature compensation technique for diode microwave power detector[J]. Electronic Measurement Technology, 2006, 29(6):172-174.
[5] 肖蒙, 李军. 切比雪夫多项式及其插值法在检测中的应用研究[J]. 自动化与仪器仪表, 2006(3): 13-16. Xiao Meng, Li Jun. Application research on TChebyshev polynomial and its interpolating method in measuring data processing[J]. Automation & Instrumentation, 2006(3): 13-16.
[6] Bussgang J J, Ehrman L, Graham J W. Analysis of nonlinear systems with multiple inputs//Proceedings of the IEEE. NewYork: Institute of Electrical and Electronics Engineers, 1974, 62(8): 1088-1119.
[7] Ruf C S, Keihm S J, Jassen M A. TOPEX/Poseidon microwave radiometer(TMR):instrument descripton and antenna temperature calibration[J]. IEEE Trans Geosci Remote Sensing, 1995, 33(1): 125-137.
[8] Bernard R. The microwave radiometer aboard ERS-1: part1-characteristics and performances[J]. IEEE Trans Geosci Remote Sensing, 1993, 31(6): 1186-1198.
[9] 胡林辉, 谢家纯, 王丽玉, 等. 4H-SiC肖特基势垒二极管温度特性研究. 中国科学技术大学学报, 2003, 33(6): 688-691. Hu Linhui, Xie Jiachun, Wang Liyu, et al. Temperature characteristics of 4H-SiC Schottky barrier diodes[J]. Journal of University of Science and Technology of China, 2003, 33(6): 688-691.

Study on Temperature Compensative Technique in Microwave Radiometer Detection System

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