The Development Of The Observation System On Earth Which Makes Moon As Radiation Reference Source

In recent decades, the space to earth observation has been developed, and remote sensing has evolved into a complete discipline from the early detection of the earth resources, showing a huge social and economic benefits. In the future, remote sensing of a huge international competition and unprecedented international cooperation is about to form. Using moon as the calibration source has many advantages which the other calibration sources don’t have: moon can be observed in anywhere on the earth’s orbit, the observation can’t be affected by the atmosphere, the influence of the stray light can be reduced to a minimum, the dynamic range is appropriate, the observation data of same instrument with different time series and different instruments of the same time series can be compared directly.At present, many foreign institutions have already carried out a long time observation of moon in its orbit, and have got a lot of useful data. They have already formed a relatively complete system, but the results did not open to China, and the research which is related to this filed is almost zero. Therefore, the development of observation on orbit lunar is very necessary and has a great significance, and the observation of moon on earth is the foundation of the observation of moon in the orbit. The foundation of the observation of moon on earth is to be able to tracking the moon’s orbit in a long period. At present, in our country or aboard, to realize the tracking and observation of stars, almost all of us will choice the equatorial implementation. However, the tracking mode of the equatorial implementation often can’t meet the experimental demand. Therefore, it is necessary to realize the development of equatorial instrument control system.In this paper, we take the Parament-MX+ equatorial equipped with spectrometer to achieve the continuous observation of the moon for a long time. We have already calculated lunar trajectories, and have got the moon relative observation position of the zenith and azimuth angle in every moment. Then we can infer the right ascension and declination axis rotation angle of each rotation. We introduced the PID algorithm, and have already analyzed the shortage of the traditional algorithm, and then we introduced the neural network. We designed the PID algorithm based on BP neural network, and realized the simulation. Through the motion control card, we realized the control of the equatorial accurately, so that it can be well used to track the moon, and it can be used in the experiment quite good. We carried out a large number of field experiments, and in this paper we introduce the operating process and the note in the experience. The experimental results show that the moon did not go out of the field of view, the instrument has pushed broom the moon’s surface quite good, the tracking accuracy is enough in the experiment.