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Radar Target Angle Estimation Method Based on MTD Pulse Accumulation and Sliding Processing

A radar target and angle estimation technology, applied in the field of radar target parameter estimation, can solve problems such as large accuracy error, and achieve the effects of improving accuracy, improving radar performance, and improving angle estimation accuracy

Active Publication Date: 2019-08-06
XIDIAN UNIV
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Problems solved by technology

Using this method can effectively suppress the clutter component, but using this method to process a group of pulses, only one output value can be obtained. This method can only output one central angle, so the accuracy error of angle estimation is still relatively large

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  • Radar Target Angle Estimation Method Based on MTD Pulse Accumulation and Sliding Processing
  • Radar Target Angle Estimation Method Based on MTD Pulse Accumulation and Sliding Processing
  • Radar Target Angle Estimation Method Based on MTD Pulse Accumulation and Sliding Processing

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Embodiment Construction

[0021] refer to figure 1 , is a realization block diagram of a radar target angle estimation method based on MTD pulse accumulation and sliding processing of the present invention; the radar target angle estimation method based on MTD pulse accumulation and sliding processing includes the following steps:

[0022] Step 1: Determine the machine-scanning radar, where a radar target exists within the detection range of the machine-scanning radar; the machine-scanning radar performs mechanical beam scanning within its detection range to obtain a beam scanning map, where the beam scanning map is the echo data of the radar target Then, the echo data of the radar target is analyzed, that is, the moving target detection (MTD) filtering is performed on the echo data of the radar target, and then the location of the radar target is obtained. Doppler channel, and determine the center frequency of the Doppler channel where the radar target is located as f 0 .

[0023] Step 2: Determine ...

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Abstract

The invention discloses a radar target angle estimation method based on MTD pulse accumulation and sliding processing. The method is mainly characterized by obtaining echo signals of a radar target, and determining center frequency of a Doppler channel where the radar target locates; determining the number L of pulses received within an angle range of the radar target and the number N of pulses received within a setting range of a beam scanning graph in sequence; carrying out moving target detection (MTD) pulse accumulation and pulse sliding processing on the number L of the pulses received within the angle range of the radar target to obtain an azimuth angle corresponding to pulse accumulation echo data obtained after (L-N+1) times of sliding window processing and an azimuth angle corresponding to pulse accumulation echo data obtained after (L-N+1) times of sliding window processing respectively; and carrying out peak search on the pulse accumulation echo data obtained after (L-N+1) times of sliding window processing to obtain maximum pulse accumulation echo data in the pulse accumulation echo data obtained after (L-N+1) times of sliding window processing, and furthermore, obtaining an optimum azimuth angle estimated value of the radar target.

Description

technical field [0001] The invention belongs to the field of radar target parameter estimation, and in particular relates to a radar target angle estimation method based on MTD pulse accumulation and sliding processing, that is, a radar target angle estimation method based on moving target detection (MTD) pulse accumulation and sliding processing, which is suitable for obtaining Machine-scanned radar azimuth in the background of clutter. Background technique [0002] Radar target parameter estimation is to extract effective target information by processing the received echo signals, such as azimuth, elevation, distance and other target information. When the radar scans the mechanical beam, it obtains the beam scan diagram, that is, the relationship diagram of the echo signal with the angle, and then finds the angle corresponding to the peak value of the target echo signal as the azimuth angle of the target signal. For this conventional method, when the background environmen...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/50G01S13/68
CPCG01S13/50G01S13/68
Inventor 赵永波田格格何学辉刘宏伟苏洪涛苏涛
Owner XIDIAN UNIV
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