激光捷联导引头线性区扩展方法研究

当激光捷联导引头工作在设计的线性区外时,在确定的激光导引头参数条件下,通过对激光探测器输出电信号的综合处理与运用,从软件算法方面可将激光导引头线性区向外大范围扩展。当目标回光剩余光斑占有两个象限时,经计算、标定,其测量结果较准确,扩展后的测量结果与线性区内测量结果呈准线性分布,当目标剩余光斑仅占有一个象限时,其质心相对于导引头视轴的距离可精确确定,但其给出的俯仰、方位位置存在较大偏差,通过限定角度,可以给出目标粗略角度位置。

Study on linear region extension of laser strap down seeker

When the measurement angle of laser strap down seeker is out of designed linear range,the linear range of laser seeker can be extended to a large extent from the software algorithm by the integrated processing and application of the electrical signal from the laser detector under the defined parameters of laser seeker.When the reflected beam of target occupies two quadrants of detector,the measurements are calculated and calibrated to be more accurate,and the the extended measurements are quasi linearly distributed with the measurements in the linear range.When the remaining spot of the target occupies only one quadrant,the position of centroid can be calculated accurately,but the output of pitch and azimuth position it gives has a large deviation,and by limiting range of angle,the approximate position of target can be obtained.