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Radar conformal array phased array wave control code calculation method

A calculation method and technology of wave control codes, which are applied in radio wave measurement systems, radio wave reflection/re-radiation, instruments, etc., can solve the problems of increasing the amount of stored data, single function, large logic resources, etc., and achieve computing speed. and the effect of improving accuracy, improving beam pointing accuracy, and flexible beam pointing angle

Active Publication Date: 2021-06-01
南京誉葆科技股份有限公司
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Problems solved by technology

The look-up table method generally adopts the whole hardware design method, which is suitable for the occasions where the system is simple, the function is single, the pointing angle is small, and the pointing accuracy is not high. The advantage is that the system is simple, the reliability is high, and the cost is low. With the increase of the number of elements and the increase of the pointing angle, the amount of stored data is greatly increased, so it is difficult to realize the high pointing accuracy and complex working mode of large-scale arrays; the real-time calculation method needs to calculate the axial matching and radial matching at the same time. There are multiplication and division in phase matching, which is difficult to implement in FPGA, and it takes up a lot of logic resources, and it is difficult to implement in hardware

Method used

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  • Radar conformal array phased array wave control code calculation method

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Embodiment 1

[0042] refer to Figure 1~8 , as an embodiment of the present invention, provides a radar conformal array phased array wave control code calculation method, including:

[0043] S1: Based on the matching scheme of conformal linear array and triangular linear array, the matching of conformal surface array is obtained, the calculation of radial matching is completed in Matlab, and the calculation results are stored in the field programmable logic gate array (FLASH) in; it should be noted that,

[0044] The matching of conformal area arrays includes,

[0045] Such as image 3 As shown, the steering vector vecsteering of the conformal surface array is located on the surface and face On the intersection line of , the matching of the conformal array can be decomposed into two parts: radially, the array is defined as 32 conformal arrays, the steering vector of the array is vecconf, and the elements of the array are according to The alignment scheme of the 32 line arrays is matc...

Embodiment 2

[0089] refer to Figure 9~10 It is another embodiment of the present invention. In order to verify and explain the technical effect adopted in this method, this embodiment uses simulation experiments to verify the feasibility of the method of the present invention, and to verify the real effect of the method by means of scientific demonstration.

[0090] Verify the feasibility of the linear array matching scheme, and carry out simulation verification on the matching scheme: this embodiment verifies the feasibility of the conformal area array matching scheme, and adopts the scheme of Example 1 to match the conformal area array of the present invention, The radius of the circumscribed circle of the conformal area array is 32.98cm, and there are eight subarrays in total, each subarray has 4 array elements, and the distance between array elements is 18.2cm. The array elements are arranged as Figure 10 As shown, when the array points to -45 degrees, -30 degrees, -15 degrees, -9 de...

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Abstract

The invention discloses a radar conformal array phased array wave control code calculation method, which comprises the steps: obtaining phase matching of a conformal area array based on a phase matching scheme of a conformal linear array and a triangular linear array, completing calculation of radial phase matching in Matlab, and storing a calculation result in a field programmable logic gate array; according to the relative position of the reference point in the array, calling a multiplier in the field programmable logic gate array to complete the calculation of axial phase matching; and reading radial phase matching which is stored in the field programmable logic gate array and corresponds to the direction of a certain wave beam, reading a preset correction phase at the same time, and adding the radial phase matching, the axial phase matching and the correction phase to obtain the wave control code of the array element at the relative position. According to the invention, the beam pointing precision is improved, the resource consumption is reduced, the beam pointing angle is flexible, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a radar conformal array phased array wave control code calculation method. Background technique [0002] The main function of the beam control system is to calculate the phase shift amount of each array element phase shifter on the array. The beam control system has many design structures. According to the beam control algorithm, it can be divided into look-up table method and real-time solution algorithm. The look-up table method generally adopts the whole hardware design method, which is suitable for the occasions where the system is simple, the function is single, the pointing angle is small, and the pointing accuracy is not high. The advantage is that the system is simple, the reliability is high, and the cost is low. With the increase of the number of elements and the increase of the pointing angle, the amount of stored data is greatly increased, so it is dif...

Claims

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Application Information

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IPC IPC(8): G01S13/02G01S13/00G01S7/41
CPCG01S7/418G01S13/006G01S13/02G01S2013/0245
Inventor 孙毅戚友琴黄一津蒙俞含王聪
Owner 南京誉葆科技股份有限公司
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