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Calculation method based on CORDIC core for beam-control code in sinusoidal space

A technology of sine space and calculation method, applied in the field of wave control code calculation in sine space, can solve irrelevance and other problems, and achieve the effect of less hardware resources, enhanced portability, and easy portability

Active Publication Date: 2016-11-16
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

[0003] At present, the available patents related to beam control implementation methods mainly include "Digital Beam Forming System and Method for Two-Dimensional Digital Array Radar" (application number CN201010509676), and the patent "Electrically Controlled Beam Stabilization Method for Phased Array Radar" (application number CN201210488000), these two patents point out that the relative attitude of the antenna is solved by numerical integration, and the beam compensation angle required to maintain the stability of the antenna beam is obtained from the coordinate change back, and the calculated beam compensation angle, target azimuth error angle and pitch error angle are common The method of realizing beam control does not involve the specific realization of beam control, and is not related to this patent

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  • Calculation method based on CORDIC core for beam-control code in sinusoidal space
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  • Calculation method based on CORDIC core for beam-control code in sinusoidal space

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Embodiment Construction

[0023] based on the following Figure 1 ~ Figure 4 , specifically explain the preferred embodiment of the present invention.

[0024] The present invention provides a method for calculating a wave control code in a sinusoidal space based on a CORDIC core, comprising:

[0025] Step S1, the wave control machine calls the CORDIC IP core inside the FPGA, and calculates the sin-cos information of the azimuth angle and the sin-cos information of the pitch angle according to the received angle information;

[0026] Step S2, multiplying the cosine of the azimuth angle and the sine of the pitch angle to obtain the U-dimensional information in the sine space, and multiplying the sine of the azimuth angle and the sine of the pitch angle to obtain the V-dimensional information in the sine space;

[0027] Step S3, adding the result of multiplying the U-dimensional information with the wave number, row spacing, and row coordinates to the result of multiplying the V-dimensional information ...

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Abstract

The invention discloses a calculation method based on a CORDIC core for beam-control codes in a sinusoidal space. The calculation method adopts the CORDIC IP core to complete computation of a trigonometric function, transforms the trigonometric function into a sinusoidal space domain, computes the beam-control codes in the sinusoidal space domain, and combines multi-channel parallel computation to realize simultaneous phase matching of multiple channels, thereby realizing fast beam control, enhancing transportability, improving beam pointing precision and saving hardware resources.

Description

technical field [0001] The invention relates to a method for calculating a wave control code in a sinusoidal space based on a CORDIC kernel. Background technique [0002] Beam control is an important part of phased array radar. With the development of integrated circuits such as FPGA, the beam control system has begun to develop in the direction of fast response, high work efficiency, and good portability. At present, the realization of phased array radar beam control is generally completed by look-up table method and real-time calculation. The look-up table method is often used in the case of few wave positions and small storage capacity, and real-time calculation is often used in situations with many wave positions and large storage capacity requirements. occasion. In addition, since the beam shape of phased array radar in sinusoidal space does not widen with the change of scanning angle, this method has been increasingly used in the realization of beam steering. [0003...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
CPCG01S7/02
Inventor 林坤史秀花郭冬梅赵龙高路王树文
Owner SHANGHAI RADIO EQUIP RES INST
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