基于雷达量测的多普勒速度计算方法研究

Research on Doppler Velocity Calculation Method Based on Radar Measurement

环境恶劣的时候,雷达探测目标会产生大量的虚警杂波点,这会导致目标跟错的现象。为了能正确跟踪目标,就需要在航迹关联或者起始时,排除虚警杂波点,关联真实目标点迹。在现代脉冲多普勒体制雷达中,雷达可以测量得到很准确的目标径向速度信息。在航迹关联或者起始时,可以利用当前点迹的多普勒速度与利用当前探测点迹和上个时刻探测点迹位置计算出来的径向速度的相关性,来抑制虚警杂波点,从而提高航迹相关或者起始的准确度。于是,本文描述了三种利用前后点迹量测位置信息来计算当前点迹多普勒速度的方法并进行了比较。

When the environment is bad, radar detection can generate many clutter points, it will result in error tracking. In order to follow the target correctly, it need exclude the clutter points and relate the real target point at track relation or track initiation. Now PD radar can measure accurate doppler velocity. Using the relation of the measurement Doppler velocity and the calculated radius velocity using the current point and the last detection point location suppress clutter, in order to raise the track relation accuracy. Therefore, in this paper three doppler velocity calculation methods are described and compared.