Side lobe control in the image retrieving of synthetic aperture radiometer

	Side lobe control in the image retrieving of synthetic aperture radiometer
	Liu H(刘浩); Wu J(吴季)
	2003
会议名称	23rd International Geoscience and Remote Sensing Symposium (IGARSS 2003)
会议日期	2003
会议地点	Toulouse, France
关键词	synthetic aperture radiometer image retrieving side lobe control Dolph-Chebyshev
页码	4374-4376
英文摘要	Using synthetic aperture radiometer to retrieve the brightness temperature distribution of the earth is a relative new technique for the microwave earth observation. But the side lobe of the synthetic aperture pattern will deteriorate the retrieved image. In the one dimensional synthetic aperture radiometer system, synthetic aperture pattern side lobe will produce the along-track streaks in the retrieved image, together with some other factors. Reducing these streaks is one of the most important tasks in the post data processing and image retrieving. In this paper, the Dolph-Chebyshev Linear Array Method is introduced to reduce the side lobe level(SLL) of the synthetic aperture pattern. Using the Dolph-Chebyshev taper window can achieve the optimal compromise between the main beam width and the SLL of the synthetic aperture pattern: all side lobes would be suppressed to the same specific level, while the main beam width would be as narrow as possible. The method is applied to some experimental data we achieved before. And the retrieved brightness temperature images are improved apparently.
收录类别	CPCI
会议录	Igarss 2003: ieee international geoscience and remote sensing symposium, vols i - vii, proceedings - learning from earth's shapes and sizes
会议录出版者	IEEE
会议录出版地	NEW YORK
学科主题	微波遥感
语种	英语
ISBN号	0-7803-7929-2
内容类型	会议论文
源URL	[http://ir.cssar.ac.cn/handle/122/1720]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Liu H,Wu J. Side lobe control in the image retrieving of synthetic aperture radiometer[C]. 见:23rd International Geoscience and Remote Sensing Symposium (IGARSS 2003). Toulouse, France. 2003.