Space target parameter tetrieval method

A space target and parameter inversion technology, applied to radio wave measurement systems, instruments, etc.

Inactive Publication Date: 2014-08-27
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

At present, there is no public technology for parameter inversion research using the small-angle RCS variation characteristics of space targets

Method used

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Embodiment Construction

[0035] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] The invention discloses an embodiment of a space target parameter inversion method based on the variation characteristics of a small-angle radar cross section (RCS, Radar Cross Section). In this embodiment, a certain satellite target is taken as an example. The body size of the satellite target is 1.2 meters, and it is assumed that the orbit of the satellite target is circular, and the orbit of the detector is oblate ellipsoid.

[0037] Such as figure 1 As shown, the space target parameter inversion method includes the following steps:

[0038] Step 1. Calculate and obtain the observation angle according to the space target (i.e. satellite target) and the space orbit position of the detector size change curve.

[0039] Observation angle The size of can generally be calculated from the orbital positions of space objects and detectors...

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Abstract

The invention discloses a space target parameter retrieval method. The method comprises the following steps of: 1, calculating according to a space target and a space orbital position of a detector to obtain a changing curve of the size of an observing angle; 2, obtaining a dynamic radar cross section curve in a space target flying process through space microwave radar measurement or simulation, and finding a radar cross section peak value according to a mirror surface reflection mechanism; 3, utilizing the observing angle corresponding to the radar cross section peak value to determine a space target gesture; and 4, retrieving the transverse size of a space target according to a descending property from the peak value of a radar cross section. According to the space target parameter retrieval method disclosed by the invention, narrow-band radar cross section RSC changing property data is observed in near distance by directly utilizing a space target to observe the retrieving of parameters of a gesture angle, the transverse size and the like in an observing plane; a microwave radar is used for observing the data and retrieving to obtain the gesture parameters of a target, so as to provide referred judgment evidence for space combination and the like; and the space target parameter retrieval method can be used for providing an effective manner for establishing a characteristic database in space target general investigation.

Description

technical field [0001] The invention relates to a target electromagnetic scattering characteristic data processing technology, in particular to a space target parameter inversion method. Background technique [0002] At present, the inversion of target parameters based on microwave scattering characteristics is mainly carried out by imaging methods, such as using high-resolution range images to invert target radial size parameters, and using two-dimensional or three-dimensional scattering images to invert target attitude parameters, etc. However, the imaging-based inversion method requires broadband RCS characteristics within a certain angle range of the target, and the observation conditions of existing space microwave radars are difficult to meet the requirements. [0003] In the process of rendezvous and docking between the detector and the space target, the distance between the detector and the target is relatively close, and the observation angle changes slowly, so the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
Inventor 梁子长顾俊
Owner SHANGHAI RADIO EQUIP RES INST
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