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研究箭载图像中的目标测距方法,可作为遥测的一条新途径。首先,使用STK软件仿真运载火箭级间分离过程,输出箭载视角仿真图像。然后,应用阈值分割方法突出目标,基于针孔成像模型解算出一、二级箭体的分离距离,并将其与仿真输入的实际距离作比对,验证方法的测量误差。实验结果表明,方法可在不改变现有图像测量系统结构的前提下深入挖掘图像信息,测量结果精度较好,为后续进一步开发基于箭载图像的物理量测量打下了基础。
Research on the method of target ranging in arrow-borne images can be used as a new way of telemetry. First of all, STK software was used to simulate the separation process of launch vehicles and the simulation results were obtained. Then, the threshold segmentation method is used to highlight the target. Based on the pinhole imaging model, the separation distance of the first and second level arrow bodies is calculated and compared with the actual distance of the simulation input to verify the measurement error of the method. The experimental results show that the method can mine the image information without changing the structure of the existing image measuring system, and the measurement accuracy is better, which lays a good foundation for the further development of the physical measurement based on the arrow-borne image.