视在位置 meaning in English
apparent position
Examples
- Beam deflection produces boresight error ( bse ) which is defined as angle shift between viewing direction and true direction . boresight error slope ( bses ) is defined as the ratio of angle shift to the tracing angle of the antenna
波束偏移的主要后果是产生瞄准误差,使目标的视在位置与真实位置有一个角度差,这个角度差就是天线罩的瞄准误差。 - For missile , either strategical or tractical , the most important thing is to attack the target accurately . this depends upon the accurate location of the larget by the missile radar . for protecting radar antenna from external environment and for air - dynamical requirement , a radome is used to enclose the antenna . but the radome interferes in the orientation of the antenna , degradaties its perfor - mance , decreases the power reaching the target , and most importantly , it produces so called boresight error ( bse ) that is , makes the antenna shows a slightly different direction of the target from its true direction , the boresight error is define as the angle shifted , and the boresight error slope ( bses ) is defined as the ratio of angle shift to the tracing angle of the radar antenna . to predict the boresight error and boresight error slope is an unavoiding chief task in designing radome and in its operation
在战略和战术雷达制导导弹中,一项重要的工作就是对目标的准确跟踪,这取决于导弹雷达对目标的准确定位。为了保护雷达天线不受外界环境的影响,天线罩被应用进来,但天线罩在保护天线不受外界恶劣环境影响的同时对天线电磁辐射产生某些干扰,使天线的电气性能降低,影响天线的功率传输,更重要的是产生瞄准误差。它使目标的视在位置与真实位置有一个角度差,这个角度差就是天线罩的瞄准误差。