| 摘要 |
PURPOSE: A measuring equipment for the receiving electric field intensity in a travelling vehicle is provided to output the data of a receiving electric field intensity by analyzing the velocity of a vehicle and the spectrum of the frequency, thereby minimizing the error range and easily reusing the data. CONSTITUTION: The device includes a receiver(10) for receiving broadcasting signals. The spectrum of the broadcasting signals received by the receiver(10) is analyzed by a spectrum analyzer(20). The velocity of the travelling vehicle is sensed by a velocity sensor(30). A frequency counter(40) counts the frequency of velocity signal generated from the velocity sensor(30). A computer(50) calculates the variation of the vehicle velocity and the receiving electric field intensity of the received signal based on the counting signal from the frequency counter(40) and the analyzed spectrum signal from the spectrum analyzer(20), and stores the calculation result at a memory. A printer(60) outputs the result according to the control signal from the computer(50).
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