How to measure the antenna pattern of shortwave radio?

Dojammer 2022-02-24

In recent years, UAVs have been widely used in testing in more and more technical fields. In the field of broadcast transmission and transmission coverage, it has always been difficult to measure the launch field type of the shortwave radio antenna at the same level. Distribution measurement is relatively difficult, usually by means of releasing balloons, which is more complicated in actual operation, and is more affected by factors such as wind speed and the electric charge carried by the large size of the balloon itself. It is very large and difficult to implement. Based on this, it is a relatively ideal choice to measure the launch field type of the short-wave in-phase horizontal antenna through the drone. It is used for the measurement of the space launch field pattern of the short-wave in-phase horizontal antenna. Through the excellent UAV measurement system and reasonable on-site measurement, it is expected to obtain the comparison between the theoretical data of the field pattern and the actual results, and solve the long-standing measurement problems in this field. drone jammer

In the specific implementation process of the measurement, the OS-2 system is used to collect the GPS coordinates of the antenna ground projection center. According to the GPS coordinates of the antenna ground projection center, the OS-2 system software is automatically deployed in the main direction of the antenna 150 meters away from the projection center. On the flight trajectory on the circular arc, the UAV takes off automatically, hovers at each monitoring point for 10s according to the preset trajectory, collects 10 sets of data, transmits it to the ground software platform in real time, and stores the data. The data is processed later to generate the horizontal emission pattern of the antenna.


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