掠海红外动态点目标图像仿真系统

Image simulation system of dynamic infrared point targets sweeping on sea surface

建立了一套掠海红外动态点目标图像仿真系统。根据红外搜索与跟踪(IRST)系统的图像数据量大、目标数量多的情况,采用软件和硬件相结合的方法解决实时仿真的问题。针对远距离动态红外点目标的特点,以仿真红外点目标、小目标为主,建立了既简洁又符合实际情况的基于高斯分布的背景灰度模型和动态红外点目标灰度生成与运动轨迹生成模型。通过人为调整均值和方差使所产生的仿真背景灰度信号可接近于实际观测到的真实红外图像信号,能用于检测IRST系统对极限背景噪声条件下的信号处理和目标提取能力。该系统的研制确保了测试IRST系统性能指标的有效性,降低了测试成本,缩短了IRST系统的研制周期。

An image simulation system of dynamic infrared point targets sweeping on sea surface is established. Because of a great deal of image data and targets of Infrared Rearch and Trcking（IRST） system, a method combining software with hardware is presented to solve the problems of real-time simulation. Aiming at long-distance dynamic infrared point targets, the infrared point targets and small targets are mainly simulated. The simple and practical models of background grey degree based on Gaussian distribution, dynamic infrared point target grey degree and running track are established. By adjusting average value and mean square difference, simulating background grey degree signal approaches to actually observing infrared image signal. The resuts show that the system can be used to test the ability of signal processing and target extraction for IRST in condition of limit background noise, also can ensure the effectivity of performance parameter of IRST system and reduce test cost and shorten development period.