First airborne tests with the new VHF SAR CARABAS II

遥感信息 Pub Date : 1997-08-03 DOI:10.1109/IGARSS.1997.606401

A. Gustavsson, B. Flood, P. Frolind, H. Hellsten, T. Jonsson, B. Larsson, G. Stenstrom, L. Ulander

引用次数: 1

Abstract

The first airborne experiment with a new upgraded VHF SAR system was carried out in October 1996. A very flat island was selected as the test area to minimize the influence from the topography and facilitate the calibration and system analyses. Data acquired over the area with this new sensor, CARABAS II, have successfully been processed. The major problem encountered concerns large paired-echo sidelobes. To improve the image quality, a careful system analysis has been carried out to obtain correction coefficients for the signal processing to compensate the overall amplitude and phase ripple. The results presently available indicate resolution figures somewhat lower compared to the theoretical values. It is believed that the main explanation for the found performance degradation is insufficient information of the antenna characteristics and the measures currently taken for the radio frequency interference filtering.

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第一次机载测试与新的甚高频SAR卡拉巴斯II

1996年10月进行了第一次机载试验，使用一种新的升级甚高频SAR系统。选择一个非常平坦的岛屿作为测试区域，以尽量减少地形的影响，并便于校准和系统分析。使用这种新型传感器CARABAS II在该区域获取的数据已成功处理。遇到的主要问题是大的成对回波副瓣。为了提高图像质量，进行了仔细的系统分析，以获得信号处理的校正系数，以补偿总体幅度和相位纹波。目前可用的结果表明，与理论值相比，分辨率数字略低。分析认为，天线性能下降的主要原因是对天线特性的了解不足，以及目前采取的射频干扰滤波措施不足。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

遥感信息

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3984

期刊介绍： Remote Sensing Information is a bimonthly academic journal supervised by the Ministry of Natural Resources of the People's Republic of China and sponsored by China Academy of Surveying and Mapping Science. Since its inception in 1986, it has been one of the authoritative journals in the field of remote sensing in China.In 2014, it was recognised as one of the first batch of national academic journals, and was awarded the honours of Core Journals of China Science Citation Database, Chinese Core Journals, and Core Journals of Science and Technology of China. The journal won the Excellence Award (First Prize) of the National Excellent Surveying, Mapping and Geographic Information Journal Award in 2011 and 2017 respectively. Remote Sensing Information is dedicated to reporting the cutting-edge theoretical and applied results of remote sensing science and technology, promoting academic exchanges at home and abroad, and promoting the application of remote sensing science and technology and industrial development. The journal adheres to the principles of openness, fairness and professionalism, abides by the anonymous review system of peer experts, and has good social credibility. The main columns include Review, Theoretical Research, Innovative Applications, Special Reports, International News, Famous Experts' Forum, Geographic National Condition Monitoring, etc., covering various fields such as surveying and mapping, forestry, agriculture, geology, meteorology, ocean, environment, national defence and so on. Remote Sensing Information aims to provide a high-level academic exchange platform for experts and scholars in the field of remote sensing at home and abroad, to enhance academic influence, and to play a role in promoting and supporting the protection of natural resources, green technology innovation, and the construction of ecological civilisation.