Fast reading and precise interpolation method of mass target characteristic data

A technology of target characteristics and interpolation methods, applied in special data processing applications, electrical digital data processing, instruments, etc., can solve unscientific problems, improve interpolation accuracy, save repeated calculations, and avoid large-scale reading.

Inactive Publication Date: 2016-10-26
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

No matter in terms of reading time or memory requirements, these are not allowed and unscientific

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  • Fast reading and precise interpolation method of mass target characteristic data
  • Fast reading and precise interpolation method of mass target characteristic data
  • Fast reading and precise interpolation method of mass target characteristic data

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Embodiment Construction

[0039] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] Such as figure 1 As shown, the present invention discloses a method for fast reading and accurate interpolation of massive target characteristic data, the method includes the following steps:

[0041] Step 1. Use Physical Optics (PO) or bouncing ray method to calculate the target's monostatic or bistatic radar cross section (RCS). For the RCS at the frequency endpoint, it is required to store its first-order and second-order derivative information at the same time.

[0042] Taking the bi-station RCS interpolation as an example, it contains five variables (incident elevation angle, incidence azimuth angle, scattering elevation angle, scattering azimuth angle, and irradiation frequency), among which the first four variables are circular, but the irradiation frequency is different. Therefore, the interpolation and extrapolation accuracy ne...

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Abstract

The present invention discloses a method for fast reading and precise interpolation of mass target characteristic data, including: 1. Calculating the bi-station radar scattering cross section of the target, and storing the first-order and second-order derivative information of the radar scattering cross section at the frequency endpoint at the same time; 2. 1. Determine and read the useful bistatic radar cross-section range according to the target state; 3. Interpolate the incident elevation angle, incident azimuth angle, scattering pitch angle and scattering azimuth; 4. Organize the data format of the bistatic radar cross-section ; 5. Send the organized bi-station data into the graphics processing unit for one-dimensional frequency interpolation; 6. Determine whether the interpolation of the incident elevation angle, incident azimuth angle, scattering elevation angle, and scattering azimuth angle has been completed; 7. The interpolated data generated by the graphics processing unit is passed back to the central processing unit. The invention adopts the Lagrangian interpolation method to realize fast reading of massive target characteristic data, avoid large-scale reading of data, improve interpolation precision, and save repeated calculations.

Description

technical field [0001] The invention relates to a target electromagnetic scattering characteristic data processing technology, in particular to a method for fast reading and precise interpolation of mass target characteristic data. Background technique [0002] The calculation of broadband radar target characteristic data of electrically large size and complex structure targets is often very time-consuming, so establishing a target characteristic database is a very general solution. Taking the dual-station radar cross section (Radar CrossSection, RCS) as an example, at a certain frequency, the incident elevation angle, incident azimuth angle and scattering elevation angle, scattering azimuth angle are sampled at 2° intervals, using double-precision floating-point access For the real part and imaginary part of the dual-station RCS, the required capacity is 90×181×91×181×8×2 / 1024 / 1024 / 1024G≈4G. Considering the target characteristic database of the Ku band (12GHz-18 GHz, with ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 高伟梁子长顾俊王谷
Owner SHANGHAI RADIO EQUIP RES INST
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