摘要
严重冰情是重要海洋自然灾害之一,往往造成国计民生的重大损失。本文概要介绍了我国“七五”期间在海冰航空遥感技术研究方面的进展,重点讨论了机载合成孔径雷达(SAR)的全天时、全天候、高分辨率、高信噪比和对云层的穿透能力强等特点,以及使用机载地球资源侧视雷达(ERR)系统,对渤海进行的首次SAR测冰试验结果。所获得的分辨率为3m×3m和成图比例为1:10万的辽东湾海冰相嵌图象,清楚地给出了固定冰带、流冰冰型、流冰密集度、冰块大小、冰脊、冰间水域和流水区外缘线等参量。SAR监测和分析海冰的研究结果具有重要的科学和实用价值。
A serious sea ice condition is one of the important marine natural hazards which often causes the heavy losses of the national economy and the people's livelikood.The progress has been made in research on the aerial remote sensing of sea ice auring the period of the seventh five-year plan of our country is introduced briefly in this paper.Tne characteristics of all-time, all-weather, high resolution, high ratio of signal to noise and good capacity of transparent to cloud layer etc. of the SAR is discussed. The result of experiment on the measurement of sea ice using aircraft ERR system carried out for Bo-hai Sea first time is presented.A SAR sea ice image for Laodong bay with a resolution of 3m×3m and mapping ratio of l : 105is obtained, which gives the parameters of fixed ice belt, types of floating ice, density of floating ice, scale of ice drift, ice ridge, ice lead and ice margin. The study results of monitoring and analyzing sea ice using SAR is much worthtul for science and practice.
出处
《海洋预报》
北大核心
1992年第1期1-11,共11页
Marine Forecasts
关键词
海冰
监测
雷达
孔径
机载
Sea ice, Aerial remote sensing, Synthetic aperture radar (SAR).
