平面长波红外相机阵列定位误差分析与计算

Analysis and calculation of positioning error of long-waveinfrared planar camera array

长波红外相机阵列对近空无人机等小目标有很好的全天候预警能力。针对红外传感器像元间距过大而导致阵列对空间目标定位精度低的缺点,本文引入像元亮度值信息,通过计算阵列目标图像的光斑质心,从而改进了阵列空间目标定位算法。在此基础上,建立了传感器采样量化带来的误差模型,并对定位误差进行计算和分析。结果表明,本文算法定位误差小,能够实现目标定位效果。

Long-wave infrared camera array provides good all-weather warning capability for small targets such as near-space UAV.Aiming at the disadvantages of low accuracy of spatial target localization by array due to large pixel size in infrared sensor,the pixel brightness information is introduced and the array spatial target localization algorithm is improved by calculating the spot center of mass of the array target image.On that basis,the error model of sensor sampling quantization is established,and the positioning error is calculated and analyzed.The results show that the algorithm has less error and can achieve the object location effect.