Acta Optica Sinica, Volume. 42, Issue 4, 0412001(2022)
Azimuth and Origin Correction Method for Improving Radar Measurement Accuracy
Figures & Tables(7)
Table 1. Relationship between geodetic accuracy and coordinate conversion error
View tableTable 1. Relationship between geodetic accuracy and coordinate conversion error
Positioning accuracy /m 0.1 0.3 0.5 1.0 Range error /m 0.1077 0.3232 0.5387 1.0775 Azimuth error /(°) 0.0127 0.0380 0.0633 0.1267 Elevation error /(°) 0.0117 0.0352 0.0587 0.1175
Table 2. Relationship between accuracy of geodetic results and due north calibration error
View tableTable 2. Relationship between accuracy of geodetic results and due north calibration error
Positioning accuracy /m 0.1 0.3 0.5 1 Azimuth error /(°) 0.0040 0.0119 0.0199 0.0397
Table 3. Comparison of measurement results of projectile with diameter of 12.7 mm before and after correction
View tableTable 3. Comparison of measurement results of projectile with diameter of 12.7 mm before and after correction
Order Radar measurement result Optical device measurement result Range /m Azimuth /(°) Elevation angle /(°) Range/m Azimuth /(°) Elevation angle /(°) 1 481.934 7.049 1.002 482.045 7.057 1.012 2 480.582 7.141 1.020 480.570 7.130 1.012 3 479.700 7.077 1.019 479.794 7.087 1.014 4 481.290 7.077 1.038 481.200 7.074 1.039 5 479.266 7.121 1.036 479.156 7.120 1.037 6 483.632 7.090 1.009 483.725 7.088 0.995 7 485.204 7.149 1.020 485.360 7.147 1.010 8 479.281 7.061 1.010 479.337 7.075 1.007 9 482.674 7.128 1.038 482.751 7.117 1.035 10 483.191 7.127 1.029 483.303 7.120 1.013 11 481.721 7.127 1.030 481.538 7.121 1.024 12 483.259 7.062 1.041 483.365 7.038 1.056 13 482.267 7.107 1.025 482.340 7.083 1.031 14 484.352 7.136 1.034 483.911 7.098 1.042 15 483.567 7.084 1.020 483.476 7.050 1.022 16 482.883 7.121 1.034 482.366 7.093 1.046 17 483.376 7.128 1.031 483.544 7.092 1.042 18 485.503 7.128 1.038 485.654 7.086 1.042 19 480.579 7.117 1.035 480.477 7.088 1.031 20 482.950 7.071 1.025 483.108 7.044 1.017 21 482.954 7.117 1.032 483.076 7.092 1.027
Table 4. Statistics of radar measurement accuracy
View tableTable 4. Statistics of radar measurement accuracy
Error Systematic error Random error Range /m 0.003 0.185 Azimuth /mrad 0.260 0.290 Elevation angle /mrad 0.010 0.150
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Shuangxun Li, Zhan Wang. Azimuth and Origin Correction Method for Improving Radar Measurement Accuracy[J]. Acta Optica Sinica, 2022, 42(4): 0412001
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Jul. 9, 2021
Accepted: Aug. 18, 2021
Published Online: Jan. 29, 2022
The Author Email: Wang Zhan (1181203374@qq.com)
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