环境电磁辐射测量中机动车辆的干扰

INTERFERENCE FROM MOTOR VEHICLES TO THE MEASUREMENT OF ENVIRONMENT ELECTROMAGNETIC RADIATION

本文测定并分析了机动车辆对环境电磁辐射测量的两类干扰,一类来自机动车辆对电磁辐射的反射,另一类来自机动车辆的火花放电。对这两类干扰的强度和影响范围进行了分析和确定,并绘出了各类机动车辆火花放电辐射的综合振幅频谱。为环境电磁辐射测量中选择测试地点和获取正确读数提供了依据。

Two kinds of interferences from motor vehicles to the measurement of environment electromagnetic radiation are experimentally tested and analysed. The first is the reflection of the motor vehicles to the electromagnetic radiation, the second is the spark discharges of motor vehicles. The affecting intensity and rang of these two kinds of interferences are quantitatively analysed and determined, and a synthetic amplitude spectrum of spark discharges of various vehicles is ploted. These may provide theoretical basis for choosing the measuring places and acquiring correct readings in the measurement of environment electromagneitc radiation.