为了可以快速地获取飞机在飞行过程中的速度、位置等信息，同时保证有较大的探测区域，设计了一种通过计算感应磁场强度分析飞机速度、位置的探测系统。建立了基于感应磁场强度反演飞机速度的数学模型，推导了探测系统的感应磁场强度表达式。仿真计算了磁场强度与探测距离、角频率的函数关系，可知探测距离的影响效果较大，角频率的影响效果较小，且感应磁场强度的量级基本符合磁力探测器的检出限要求。模拟实验通过等比例缩小实物的方法，将飞机用金属棒代替，对不同速度的金属棒进行测试，分析计算3个磁力探测器的磁场强度变化，可获得目标的速度、位置等信息，证明了系统的可行性。%In order to quickly get speed,location and other information for plane during the flight in a larger detection area,a system for detecting the speed and position of the plane was designed by calculating magnetic field strength. Mathematical model inversion of plane speed was established by calculating the induced magnetic field strength. The magnetic field strength expression of the detection system was derived. The magnetic field intensity function was simulated with detection distance and angular frequency. The impact was greater from detection distance, and the impact was smaller from the angular frequency. The magnitude of intensity of the induced magnetic field was basically in line with detection limit requirements of magnetic detectors. By the method of scaled down physical did from situation in the simulation experiments,metal rods instead of the plane,and constant magnetic field source instead of the geomagnetic field. From the tested different speeds of rods,analysis and calculation of the three magnetic field intensity detector were made. Velocity, position, and other information for target can be available, and it proves feasibility of the system.
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