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Meter-wave radar high-precision two-dimensional angle estimation algorithm

An estimation algorithm, the technology of meter-wave radar, applied in radio wave measurement system, radio wave reflection/re-radiation, using re-radiation, etc., can solve the problem of insufficient accuracy

Pending Publication Date: 2021-03-30
AIR FORCE UNIV PLA
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Problems solved by technology

[0005] The purpose of the present invention is to provide a metric-wave radar L-type uniform array interleaved double-precision two-dimensional angle estimation algorithm to solve the problem that the accuracy of the previous metric-wave radar array two-dimensional angle estimation algorithm is not high enough

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  • Meter-wave radar high-precision two-dimensional angle estimation algorithm

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Embodiment

[0059] Figure 1 to Figure 6 One embodiment of the invention is shown.

[0060] figure 1 , figure 2 A high-precision two-dimensional angle estimation algorithm for meter wave radar is shown, which is a two-dimensional angle estimation algorithm based on the CCM-SVD algorithm and the least squares algorithm (LS algorithm), and the graph of the two-dimensional angle estimation algorithm is established: Set The X-axis array, Y-axis array, and Z-axis array are fixed at one point, the Z-axis array and the Y-axis array are perpendicular to each other, the X-axis array and the Y-axis array are on the same horizontal plane, and the cross-covariance of the received signals of the X-axis array and the Z-axis array The array is an N×N dimensional matrix, and the two-dimensional angle estimation algorithm includes the following steps: step S1, using the CCM-SVD algorithm to obtain a rough estimate of the pitch angle; step S2, combining the rough estimate of the pitch angle, the X-axis ...

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Abstract

The invention relates to the field of meter-wave radar two-dimensional angle estimation algorithms, in particular to a meter-wave radar high-precision two-dimensional angle estimation algorithm. The method is a two-dimensional angle estimation algorithm based on a CCM SVD algorithm and a least square algorithm, and the two-dimensional angle estimation algorithm comprises the following steps: S1, obtaining the rough estimation of a pitch angle through employing the CCM-SVD algorithm; S2, in combination with the coarse estimation of the pitch angle and the received signals of the X-axis array and the Z-axis array, using a least square algorithm to solve azimuth angle fine estimation; S3, obtaining rough estimation of an azimuth angle by utilizing a singular value CCM-SVD algorithm based on across covariance matrix; and S4, in combination with the rough estimation of the azimuth angle and the received signals of the X-axis array and the Z-axis array, solving the fine estimation of the pitch angle by adopting a least square algorithm. The angle estimated by the method has very high estimation precision, and the estimated azimuth angle and pitch angle can be automatically paired.

Description

technical field [0001] The invention relates to the field of two-dimensional angle estimation algorithms for meter-wave radars, in particular to a high-precision two-dimensional angle estimation algorithm for meter-wave radars. Background technique [0002] Angle estimation is a basic function of meter-wave array radar, but meter-wave radar array has the problems of poor angle measurement accuracy and low elevation angle estimation is easily affected by multipath signals. [0003] For example, the publication number CN102520399B discloses a method for estimating the angle of a meter-wave radar based on an electromagnetic vector array. The implementation steps are: (1) use the electromagnetic vector array to receive the radar echo, and mix it to the baseband for discrete sampling; (2) use the discrete sampling data to construct the second-order statistical matrix; (3) construct the second-order statistical matrix Carry out singular value decomposition to obtain the left sign...

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Application Information

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IPC IPC(8): G01S7/41G01S13/00G01S13/02
CPCG01S7/418G01S13/006G01S13/02Y02A90/10
Inventor 郭艺夺冯为可宫健胡晓伟李洪兵沈堤葛启超
Owner AIR FORCE UNIV PLA
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