Improvement of Terrestrial Radio Environment Measurement Methods Using Satellite Constellations

Spectrum sharing is one of the technologies to solve the depletion of frequency resources caused by the recent increase in the demand for wireless communications. In spectrum sharing using a database, there is a method to use the radio wave environmental data of each place in order to improve the accuracy of interference calculation. Since it is difficult to make the radio wave environmental data into statistics in a wide range, the authors proposed and examined a method to remotely measure the electric field intensity on the ground using a low Earth orbit (LEO) satellite. This method is divided into a measurement method and an estimation method. In this paper, we propose a new measurement method that enables high-precision measurement by suppressing the influence of interference. This improved measurement method has significantly reduced interference during measurement compared with the conventional method.