信号弹的发射高度是信号弹的重要技术参数。为了测试信号弹发射高度，通过建立数学模型，提出采用单个面阵CMOS相机对信号弹高度进行测试的技术。通过前期相机工作视场角标定，对CMOS相机采集的视频图像采用MATLAB进行处理，实现对信号弹发射高度的实时测试。同时分析了误差来源，估算了系统误差精度。最终测得某信号弹的发射高度在159.348～167.567 m之间。结果表明，该测试系统具有成本低、操作简单、布站方便、测量精度高、自动化程度高、不受测量场地的限制、排除了人工读取误差等优点。

The launching height is an important technical parameter for the signal flare. In order to test the launching height of the signal flare, the measurement technology based on the single area array CMOS camera is proposed by establishing mathematical model. By calibrating the camera angle of view, the video images collected from CMOS camera are processed by MATLAB, and the real-time measurement for launching height of signal flare is achieved. Meanwhile, the sources of error are analyzed and the accuracy of the system error is estimated, and the launching height of the signal flare is between 159.348 m and 167.567 m. The result shows that the advantages of the measurement system are low cost, simple operation, easy deployment, high precision, high degree of automation, without limitations of measurement environment and errors of manual reading, etc.