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Optimized designing method for space-based early-warning radar power-aperture product

An early warning radar, optimized design technology, applied in the direction of reflection/re-radiation of radio waves, utilization of re-radiation, measurement devices, etc., can solve the problems of strengthening power demand and supply, power waste, etc., to achieve small computational complexity and achievability Strong, simple and convenient model solution

Active Publication Date: 2019-03-29
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

If the fixed radar operating distance that satisfies far-field detection is still used, it will cause waste of power during near-field detection. Coupled with the environmental constraints of high-power power supply in space, the contradiction between power demand and supply will be strengthened.

Method used

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  • Optimized designing method for space-based early-warning radar power-aperture product
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  • Optimized designing method for space-based early-warning radar power-aperture product

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Embodiment Construction

[0052] The specific implementation of the present invention can be carried out according to figure 1 The process execution shown includes 9 process steps. The following assumes that a single platform system is adopted, and the detailed steps of the embodiment of the present invention are explained in conjunction with the accompanying drawings:

[0053] (1) Determine the maximum available coherent processing time 1; where the radar signal bandwidth B determines the size of the range resolution unit Δr, and the target motion characteristics include the target’s motion speed and mode. / statistical average speed in distance dimension The determination principle of the maximum available coherent processing time is: within the maximum available coherent processing time, the moving distance of the target is not greater than half the distance resolution unit. Its expression is

[0054]

[0055] where c is the speed of light.

[0056] (2) Determine the single wave position dwel...

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Abstract

The invention discloses an optimized designing method for a space-based early-warning radar power-aperture product. The method comprises the steps of firstly determining residence time of a single wave bit beam by means of a radar equation; performing dual restrictions on the power-aperture product by means of single wave bit highest available wave beam residence time and an area coverage rate index, establishing an optimizing model and solving, and finishing optimized designing of the power-aperture product. According to the method of the invention, optimized designing is performed on the power-aperture product according to a characteristic that a radar necessary action distance changes along with earth surface geometry in detecting an area on the earth surface by the space-based early-warning radar; an optimizing result can be minimized under a precondition of satisfying a requirement for detecting performance and an area coverage rate index. Compared with a traditional method, the method of the invention greatly reduces the requirement for the power-aperture product. The method according to the invention has advantages of low operation amount, high realizability and high suitability for multiple antenna forms and multiple space-based platform systems.

Description

technical field [0001] The invention belongs to the field of space-based radar system design, in particular to a power-aperture product design method of space-based early warning radar. Background technique [0002] Compared with other platform early warning radars, space-based early warning radars have the advantages of not being restricted by national borders and airspace, wide coverage, and high platform heights. and early warning surveillance information acquisition and support potential on a global scale. Although the space-based early warning radar system is costly and technically difficult, the world's powerful countries are still actively investing in research and development because of its significant advantages and potential. However, due to the unique space working environment and long-distance detection performance requirements, space-based early warning radars still have major technical problems in terms of high-power power supply, comprehensive antenna perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88
CPCG01S13/88G01S13/886
Inventor 高飞党红杏谭小敏解虎刘昕杨东郭磊
Owner XIAN INSTITUE OF SPACE RADIO TECH
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