A Spaceborne Active-Passive Combination Microwave Atmospheric Sounding System

Abstract

The invention discloses a spaceborne active and passive combined microwave atmospheric detection system, the system includes several pairs of transmitting satellites and receiving satellites flying on pre-designed orbits; the first microwave occultation active detection module is set on the transmitting satellites 1. A first microwave radiometer and a first calibration module; a second microwave occultation active detection module, a second microwave radiometer and a second calibration module are arranged on the receiving satellite. The present invention integrates the technical advantages of microwave radiometer and microwave occultation detection, and provides a space-borne active and passive microwave with a small satellite constellation as a platform, a combination of active microwave and passive microwave, and a combination of limb detection and sub-satellite point scanning detection. Atmospheric detection system realizes high temporal and spatial resolution, rapid and high-precision detection of the earth's atmosphere.

Description

technical field [0001] The invention relates to the technical field of atmospheric detection, in particular to a microwave atmospheric detection system with a combination of active and passive satellites. Background technique [0002] High temporal and spatial resolution detection of atmospheric temperature and humidity pressure is of great significance to numerical weather prediction and global climate change monitoring. The development of artificial satellite and detection instrument technology provides opportunities for the innovation of atmospheric detection methods. On the one hand, the technology level of micro-satellite attitude control and formation flight continues to improve, and the micro-satellite platform is becoming more and more mature, which greatly reduces the cost of constellation networking remote sensing detection; on the other hand, with the development of electronic technologies such as semiconductors, remote sensing detection instruments are moving tow...

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Problems solved by technology

[0004] Previous studies have shown that GNSS occultation detection data can be used for microwave radiometer calibration; however, GNSS occultation detection technology has the problem of water vapor ambiguity, and cannot independently detect atmospheric temperature and humidity pressure profiles, and the high-level detection data is affected by ionospheric residuals. The influence of GNSS difference is relatively large, which makes its calibration depend on background atmospheric information to a certain extent; on the other hand, GNSS occultation and radiometer data come from different satellite systems, and the spatio-temporal matching is poor, which restricts its calibration effect and timeliness

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