| 摘要: |
| 相控阵雷达采用单脉冲和差波束对目标跟踪测量时,当跟踪波束远离方位、俯仰法线时,和差波束在阵面坐标系内会出现展宽、扭曲现象,严重影响了相控阵雷达和差测角精度。针对该问题,本文提出了一种改进后的相控阵雷达单脉冲和差测角方法,利用相控阵雷达波束在正弦空间坐标系内不随扫描角变化的特点,在正弦空间坐标系内进行和差测角得到目标偏差,结合正弦空间坐标系内波束指向值,通过坐标转换得到目标在阵面坐标系中的位置,并通过仿真验证了该方法对提高相控阵雷达单脉冲和差测角精度的有效性。 |
| 关键词: 相控阵雷达 和差测角 正弦空间 测角精度 |
| DOI： |
| 分类号:TN953.5 |
| 基金项目: |
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| An Improved Mtehodfor Mono-pulse Sum Difference Angle Measurement of Phased Array Radar |
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| Abstract: |
| In the process of target tracking by phased array radar, when the tracking beam is far away from the azimuth and elevation normal, the sum and azimuth difference beam will be broadened distorted in the array coordinate system, which will seriously affect the accuracy of angle measurement. In order to solve this problem, an improved mono-pulse sum difference angle measurement method for phased array tracking radar is proposed in this paper. Based on the characteristic that the beam of phased array radar does not change with the scanning angle In the sinusoidal space coordinate system, the target deviation is obtaining by sum difference angle measurement In the sinusoidal space coordinate system, and the position of the target In thearray coordinate is obtained by coordinate transformation combined with the beam direction In the sinusoidal space coordinate system. The effectiveness of the method is verified by simulation. |
| Key words: phased array radar sum difference angle measurement sinusoidal space angle measurement accuracy |