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System and method for ground-based radar two-dimensional sparse array detection of space debris

A technology of space debris, detection method, two-dimensional ground-based radar applied to space debris
Sparse array detection system, in the field of space target detection, can solve low-cost problems, achieve low cost, easy implementation, and improve sensitivity

Active Publication Date: 2011-11-23
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

lower cost

Method used

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  • System and method for ground-based radar two-dimensional sparse array detection of space debris
  • System and method for ground-based radar two-dimensional sparse array detection of space debris
  • System and method for ground-based radar two-dimensional sparse array detection of space debris

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Embodiment Construction

[0037] A schematic diagram of a two-dimensional sparse array detection system for a space debris ground-based radar is shown in Figure 1. The overall framework of the system

[0038] (1) Synergy Source

[0039] The coordinated source transmits the modulated carrier signal after pseudo-code spread spectrum, which has strong multiple access ability, strong anti-fading ability, and reliable

[0040] The detection distance of a radar is closely related to its working frequency, and the RCS of a target is also related to its working wavelength.

[0041] (2) Transmitting antenna

[0042] The transmitting antenna is a Torus antenna, and the reflection surface of the antenna is parabolic in the vertical plane and a circular ring in the horizontal plane.

[0043] The Torus antenna emits a flat beam, coupled with a single-axis scanning function, which appropriately increases the airspace coverage, here is

[0044] The antenna adopts multiple feed sources, which can perform power superposition, whi...

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Abstract

The present invention is a ground-based radar two-dimensional sparse array detection system and method for space debris, which combines the advantages of mechanical tracking radar, phased array radar and electronic fence, and at the same time makes up for their respective shortcomings to a certain extent. On the basis of maintaining high-precision positioning and multi-target acquisition capabilities, the transmission uses a single-axis scanning torus antenna, which is a flat beam antenna and has a certain airspace coverage; the reception uses a two-dimensional sparse antenna array. Based on the one-dimensional debris search fence, the receiving range of the antenna is increased, and the positioning accuracy of debris is improved. In the present invention, the system used is scientific and reasonable in construction, low in construction cost, capable of cold start, and capable of discovering new fragments; the launch station is movable, flexible, convenient in disassembly and assembly, and has good emergency response capabilities. The invention can better meet the increasingly urgent space debris detection task requirements of our country, and has strong practicability, application value and important practical significance.

Description

Ground-based radar two-dimensional sparse array detection system and method for space debris Technical field [0001] The present invention relates to the field of space technology, belongs to space target detection technology, and is a two-dimensional ground-based radar for space debris. Sparse array detection system and method. Background technique [0002] The issue of space debris has caused the international space community, especially the member states (or organizations) of the International Space Station attention. The United States, Russia, ESA, Japan, Germany, France and other countries have conducted a lot of relevant research. [0003] Space debris ground-based radar detection equipment is mainly divided into mechanical tracking radar, phased array radar and electronic fence. Kind. [0004] Typical mechanical tracking radars include Haystack, HAX (HaystackAuxiliary) and Goldstone (Goldstone), Germany's TIRA (tracking imaging) radar. Haystack radar looks at the airspace...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/06G01S13/04
Inventor 杨朋翠施浒立李圣明
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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