Antenna array forming technology-based ground-based radar system for space debris

Abstract

The invention provides an antenna array forming technology-based ground-based radar system for space debris, which comprises a signal emitting part, a signal receiving part and a frequency and time unified signal board, wherein the signal emitting part comprises a signal generating source, a digital beam former, a phase synchronous circuit, a plurality of up-converters, a plurality of power amplifiers and an emitting antenna array; the emitting antenna array is a one-dimensional antenna array consisting of a plurality of emitting antennas along the east and west direction; each emitting antenna is used for emitting a signal amplified by a corresponding power amplifier to the space debris; the signal receiving part comprises a receiving antenna array, a plurality of low noise amplifiers, a plurality of down-converters, a plurality of analog-to-digital converters, a space debris accurate measurement module, a space debris common measurement module and a data postprocessing interaction module; and the receiving antenna array is a two-dimensional antenna array consisting of a plurality of receiving antennas arranged according to a plane, and is used for receiving signals reflected by the space debris.

Description

technical field [0001] The invention relates to the field of space technology, in particular to the space debris ground-based detection technology. Background technique [0002] Since the launch of the world's first artificial satellite in 1957, humans have launched nearly 6,000 spacecraft into space. At present, there are more than 10,000 earth-orbiting targets with a diameter of more than 10 cm that are routinely tracked, of which only about 6% are payloads, and the rest are all space debris. Space debris is the product of human space activities, including rocket bodies and satellite bodies that have completed their missions, rocket jets, discarded objects during space missions, and fragments produced by collisions between space objects. main source of pollution. The existence of space debris seriously threatens the safety of orbiting spacecraft. The collision between them and the spacecraft can directly change the surface performance of the spacecraft, cause damage to t...

AI Technical Summary

Problems solved by technology

[0007] At present, the observation of foreign space debris mainly adopts large-scale phased array radar, electronic fence and large-scale mechanical tracking radar. - multi-objective general survey and / or pinpoint location capability, especially for space debris with a size of 1 to 10 centimeters in diameter

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