A lunar observation system

Abstract

The invention discloses a moon observation system which is composed of an astronomical telescope, a ground-based microwave radiometer, a two-dimensional scanning mechanism and a controller. The systemis simple in structure and easy to implement. The ground-based microwave radiometer is installed on a two-dimensional turntable, the pitch angle of the initial position of the moon is obtained by theastronomical telescope, the initial position is calibrated by the controller, and the two-dimensional turntable is controlled to automatically track and scan the track of the moon; the moon brightness temperature signal is reflected by the antenna to enter an antenna feed system and enters a radiation receiver after polarization separation, and a voltage acquisition signal and a variance curve can be obtained in real time after detection and the moon brightness temperature value can also be calculated and thus the test efficiency can be effectively improved. The moon observation system has certain universality and can be applied to moon brightness temperature measurement based on ground-based microwave radiometers of different frequency bands to explore the stability and time distributioncharacteristics of microwave radiation characteristics.

Description

technical field [0001] The invention belongs to the field of lunar observation equipment, in particular to a lunar observation system. Background technique [0002] The moon is the closest natural celestial body to the earth, and its surface has excellent radiation stability. Once the change of lunar radiation is accurately determined, the moon can be used as a long-term calibration source for space remote sensors. The regolith layer on the lunar surface has long been impacted by meteorites and radiated by solar cosmic rays, storing the history of lunar geology and solar radiation activities. Because the lunar soil is a low-loss medium, microwave remote sensing can detect the depth of several meters; passive remote sensing consumes less energy, and the existing microwave radiation technology can be realized. How to accurately and efficiently measure the brightness temperature of the lunar surface radiation is an important issue in lunar exploration. [0003] At present, th...

AI Technical Summary

Problems solved by technology

[0004] The existing ground-based microwave remote sensing testing devices for observing the moon’s brightness temperature focus on S, X, Ka and other frequency bands with relatively low measurement resolution, low system stability, and self-noise that affects the test accuracy. Many details on the lunar surface cannot be observed. The average brightness temperature of the lunar surface can be obtained, but it is difficult to obtain accurate short-term stable data

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