A method for assessing the quality of three-coordinate radar traces
A technology of radar trace and quality assessment, which is applied to radio wave measurement systems, instruments, etc., and can solve problems such as the calculation method of the authenticity of the trace is not given
Active Publication Date: 2021-02-26
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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In the document "A Point Track Agglomeration Method Based on Three-Coordinate Radar" (Radar and Countermeasures, 2013, Vol.33, No.4, pp: 46-50), it is proposed to use multiple repetition cycle accumulation and statistical improvement point However, there is no clear calculation method for the authenticity of dot traces in the literature.
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[0018] The calculation process of a three-coordinate radar spot quality evaluation method of the present invention is as follows: figure 1 Shown, in conjunction with flow chart and embodiment, the embodiment of the method of the present invention is set forth in detail, and process is as follows:
[0019] Step 1: distance detection cohesion mass calculation;
[0020] Set the trace quality normalization factor as C Q = 1, the maximum value of the cohesive mass in each dimension is Q max_0 =3, the upper limit of the echo broadening factor is κ EP= 2; Let the radar distance resolution be R res , unit: m, the size of the distance sampling unit is ΔR, unit: m, the number of sampling units in one resolution unit is Represents the upward rounding operation, and the distance detection cohesion quality Q r Amp i , i=1,...,N r_plot and the number of distance units N r_plot Calculate; if N r_plot ≤N res , Q r =max(0,N r_plot -N res +1)C Q , max() is the maximum operatio...
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The invention provides a three-coordinate radar plot quality evaluation method. The three-coordinate radar plot quality evaluation method comprises the following steps: according to a sequence of distance, pitch and orientation, calculating distance detection cohesion quality of a distance dimension according to number and amplitude statistical properties of distance units which are cohered into acurrent distance plot, calculating pitch detection cohesion quality of a pitch dimension according to number, quality and amplitude statistical properties of distance plots which are cohered into a current pitch plot, and calculating orientation detection cohesion quality of an orientation dimension according to number, quality and amplitude statistical properties of pitch plots which are coheredinto a current plot, thus obtaining final three-coordinate radar plot quality. According to the three-coordinate radar plot quality evaluation method provided by the invention, quality evaluation iscarried out on cohered plots by combining a condensing treatment process of the three-coordinate radar plots under a condition that existing data processing flow is not changed, true target plots andfalse plots can be screened through the plot quality, and a reference basis is provided for removing the false plots.
Description
technical field [0001] The invention belongs to the technical field of radar target detection, and in particular relates to a three-coordinate radar target detection and point trace aggregation method. Background technique [0002] Target detection and tracking is one of the most basic tasks of radar. After signal processing, detection condensation point extraction, track initiation and tracking are carried out. Effective extraction of target point traces is an important prerequisite to ensure subsequent data processing performance. Three-coordinate radar point trace extraction is to carry out weighted and cohesive processing on target echoes distributed in multiple range units, elevation beams and azimuth beams, extract the "centroid" of target echoes, and obtain multi-dimensional information such as distance, elevation angle and azimuth. In the document "Design of three-coordinate radar spot extraction system" (ship electronic countermeasures, 2010, Vol.33, No.5, pp: 78-82...
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IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 夏永红匡华星王超宇张宁
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND