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针对助航灯具的发光特性,提出了一种测试助航灯具出射光强分布的方法。使用线阵CCD作为光电传感器,采集、获取各个方向灯具的光强信号,利用A/D芯片和USB接口芯片实现数据的转化和实时传输。通过改进的Delaunay三角剖分线算法和B样条曲线平滑处理算法的结合,提出了一种快速生成等光强曲线的算法,给出了Matlab软件获得等光强曲线的方法。通过对PAPI灯出射光强的测试及其等光强曲线的拟合,验证了该测试装置可以较好地实现光强测试,所提算法绘制的曲线平滑、速度快。
Aiming at the light-emitting characteristics of aids to navigation, a method to test the distribution of the light intensity of aids to navigation aids is proposed. The use of linear CCD as a photoelectric sensor, acquisition, access to light signals in all directions of the lamp, the use of A / D chip and USB interface chip data conversion and real-time transmission. Through the combination of improved Delaunay triangulation algorithm and B-spline curve smoothing algorithm, a fast algorithm of generating isopach curve is proposed and the method of obtaining the isoptics curve by Matlab software is given. Through the test of the light intensity of PAPI lamp and the fitting of isopower curve, it is verified that the test device can achieve the light intensity test better. The curve drawn by the proposed algorithm is smooth and fast.