CPC G01R 29/0871 (2013.01) [B64C 39/02 (2013.01); G01R 29/0857 (2013.01); G01R 29/0878 (2013.01); B64U 2201/10 (2023.01)] | 10 Claims |
1. A method for measuring environmental electromagnetic field, comprising: steps of:
disposing an electromagnetic field measurement system on a movable carrier, wherein the electromagnetic field measurement system comprises a sensing module, an analog signal processing module, and a digital signal processing mechanism, wherein the sensing module is selected from the group consisting of an electric field sensor, a magnetic field sensor and a combination thereof to sense an environmental electromagnetic field of a spatial position to generate a sensing signal;
having the analog signal processing module remove a high-frequency interference from the sensing signal to retain a first filtered signal, wherein the high-frequency interference has a frequency greater than a first frequency value, and the first frequency value is determined according to an electromagnetic field generated from the operation of the movable carrier itself; and
performing the digital signal processing mechanism, comprising steps of:
converting the first filtered signal into a digital signal;
removing a low-frequency interference from the digital signal to form a second filtered signal, wherein the low-frequency interference has a frequency less than a predetermined second frequency value; and
calculating a measured value of the environmental electromagnetic field of the spatial position according to the second filtered signal.
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