In order to improve the interpretation of the earth system microwave remote sensing, the research of microwave spectrum characteristics of the ground truth (earth objects) was carried out in laboratory. A laboratory f...In order to improve the interpretation of the earth system microwave remote sensing, the research of microwave spectrum characteristics of the ground truth (earth objects) was carried out in laboratory. A laboratory for microwave remote sensing of the earth objects has been constructed to improve the remote sensing level, the laboratory consists of four parts: the measuring system of dielectric constants, the microwave emissivity meter, the microwave reflectometer and the microwave remote sensing simulation experiment in field. In this paper, the principle of measurement, the correction of near field process, the structure of instrument, the calibration method and the measurement of the earth substances, including soil, water and oil, are discussed. The labora- tory may supply the condition for measuring the parameters of thc earth substance remote sensing and help to interpret the remote sensing data.展开更多
Faced with the task of protecting ocean evironment, people have long been concerned at the problem how to monitor oil pollution on sea surface. In this paper, study is conducted on the characteristics of microwave emi...Faced with the task of protecting ocean evironment, people have long been concerned at the problem how to monitor oil pollution on sea surface. In this paper, study is conducted on the characteristics of microwave emissivity to improve the microwave remote sensing of petroleum pollution on sea surface, because microwave emissivity proves to be of practical value owing to its direct link with passive microwave remote sensing.展开更多
Ground-based observation of atmospheric microwave noise may be used to get atmospheric temperature-humidity profile and parameters of cloud and rain. From September to October 1981, the experiment of remote sensing on...Ground-based observation of atmospheric microwave noise may be used to get atmospheric temperature-humidity profile and parameters of cloud and rain. From September to October 1981, the experiment of remote sensing on atmosphere was carried out at Peking University with 5 mm—1.35 cm band 4-channel radiometers. In this note, we present and discuss the experimental results from 8 mm to 1.35 cm radiometers of remote sensing atmospheric water vapor content and the characteristics of absorption in λ=1.35 cm water vapor band and λ=8 mm window band. In these bands, the microwave absorption of atmosphere is small, much smaller展开更多
基金Supported by National Natural Science Foundation of China
文摘In order to improve the interpretation of the earth system microwave remote sensing, the research of microwave spectrum characteristics of the ground truth (earth objects) was carried out in laboratory. A laboratory for microwave remote sensing of the earth objects has been constructed to improve the remote sensing level, the laboratory consists of four parts: the measuring system of dielectric constants, the microwave emissivity meter, the microwave reflectometer and the microwave remote sensing simulation experiment in field. In this paper, the principle of measurement, the correction of near field process, the structure of instrument, the calibration method and the measurement of the earth substances, including soil, water and oil, are discussed. The labora- tory may supply the condition for measuring the parameters of thc earth substance remote sensing and help to interpret the remote sensing data.
文摘Faced with the task of protecting ocean evironment, people have long been concerned at the problem how to monitor oil pollution on sea surface. In this paper, study is conducted on the characteristics of microwave emissivity to improve the microwave remote sensing of petroleum pollution on sea surface, because microwave emissivity proves to be of practical value owing to its direct link with passive microwave remote sensing.
文摘Ground-based observation of atmospheric microwave noise may be used to get atmospheric temperature-humidity profile and parameters of cloud and rain. From September to October 1981, the experiment of remote sensing on atmosphere was carried out at Peking University with 5 mm—1.35 cm band 4-channel radiometers. In this note, we present and discuss the experimental results from 8 mm to 1.35 cm radiometers of remote sensing atmospheric water vapor content and the characteristics of absorption in λ=1.35 cm water vapor band and λ=8 mm window band. In these bands, the microwave absorption of atmosphere is small, much smaller
