关键词: 小行星, 射电望远镜, 波束开发方法

Abstract: Along with the rare event that the Comet SL-9 impact Jupiter was confirmed by observations, the task of searching near-earth asteroids and relative comets is obtaining more and more attention. Therefore, first of all, in view of the radiation tendency of cool and dark celestial bodies and detection limit of telescope, we point out the potential advantage of radio astronomical method for the task. Then, on the basis of predicted technical index of the 65m multi-waveband radio telescope, we discuss the feasibility of using beam switching method to detect the radio radiation of near-earth asteroids which can be very weak down to about 1 mJy. Also through the analysis of relative data of united observations, we introduce the basic steps of determining the direction, distance,velocity and size of the asteroids. Finally, we discuss the probability of themethod as mentioned above to be used for other astronomical objects.

Key words: asteroids, radio telescope, beam switching method