Satellite-bone low-noise 13-channel V wave band receiver

Abstract

The invention provides a satellite-bone low-noise 13-channel V wave band receiver which comprises a polarization selection feed source, a V wave band low-noise amplifier, a mixer, a frequency separator, an intermediate frequency processing unit, a detector circuit and a low frequency processing unit. The polarization selection feed source receives noise signals and separates H polarization components from the noise signals, the V wave band low-noise amplifier and the polarization selection feed source are connected and conduct low-noise amplification on the input H polarization components and then output the H polarization components to the mixer, the mixer conducts down-conversion on the input signals to generate intermediate frequency signals, the frequency separator and the mixer are connected to separate the intermediate frequency signals into 13 kinds of different intermediate frequency signals which are amplified and filtered by the intermediate frequency processing unit and integrated and amplified by the detector circuit and the low frequency processing unit respectively, and specific noise information is acquired. The satellite-bone low-noise 13-channel V wave band receiver is high in integration level, small in size, weight and power consumption, and very suitable for satellite-bone application.

Description

technical field [0001] The invention relates to a satellite-borne microwave atmospheric temperature detection radiometer receiver, in particular to a space-borne low-noise 13-channel V-band receiver. Background technique [0002] The space-borne microwave radiometer is a passive microwave remote sensor. Its function is to observe the earth from the satellite platform, obtain geophysical parameters, and apply it to weather forecast and climatology research. The receiver is the core component of the radiometer, which determines important indicators such as the receiving frequency, bandwidth, sensitivity, linearity, and integration time of the radiometer. [0003] V-band receivers are mainly used for 50-60GHz atmospheric temperature profilers. The detection frequency band is 50.3GHz-57.290344GHz, including 13 discrete detection channels. Usually in the application, multiple receivers are selected according to the frequency and frequency band to realize the receiving work of 1...

AI Technical Summary

Problems solved by technology

Usually in the application, multiple receivers are selected according to the frequency and frequency band to realize the receiving work of 13 channels, resulting in duplication of channel settings

For spaceborne applications, the quality, volume, and power consumption are too large, resulting in a waste of satellite resources; at the same time, since multiple receivers must be equipped with multiple feed sources, the detection data cannot be guaranteed The homology will cause a lot of difficulties and workload for later application

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