Method and system of measuring radio wave distribution of a radio signal source and estimating corresponding radio characteristics by using a flying vehicle

A system of measuring a radio wave distribution of a radio signal source and estimating corresponding radio characteristics by using a flying vehicle, comprising:

• the flying vehicle, having a radio module configured to receive a plurality of first radio signals transmitted from a radio signal source at a plurality of flight positions during a measurement process, wherein the first radio signals are received when the flying vehicle flies through the plurality of flight positions, and the first radio signals carries a radio output power of the radio signal source;
• a flight attitude control module, configured to control a flight path of the flying vehicle, wherein the flight path comprises the flight positions;
• and
• a radio characteristic management module, configured to obtain signal attenuations from power of the first radio signals received by the flying vehicle with reference to the radio output power of the radio signal source, obtain distances between the flying vehicle at the flight positions and the radio signal source according to the signal attenuations with reference to a radio channel model, estimate a position of the radio signal source according to the distances between the flying vehicle at the flight positions and the radio signal source, obtain a plurality of first radio characteristics of the first radio signals based on the received first radio signals, normalize the first radio characteristics of the first radio signals, compare the normalized first radio characteristics with a waveform characteristic database of the radio signal source, estimate the radio wave distribution of the radio signal source according to a result of comparing the normalized first radio characteristics with the waveform characteristic database of the radio signal source, and estimate second radio characteristics of a plurality of second radio signals in the radio wave distribution according to the first radio characteristics of the first radio signals,
• wherein the second radio signals correspond to positions other than the flight positions during the measurement process,
• wherein a formal flight path of the flying vehicle is planned according to the position of the radio signal source and strengths of the second radio signals corresponding to the estimated second radio characteristics of the second radio signals, and
• wherein the first radio characteristics or the second radio characteristics comprise one or more than one of RSRP, RSCP, RX LEVEL, RSSI, SNR, data transmission rate, signal delay, band stability, and probability of staying connected.

A method of measuring a radio wave distribution of a radio signal source and estimating corresponding radio characteristics by using a flying vehicle, comprising:

• measuring a plurality of first radio signals transmitted from the radio signal source by the flying vehicle at a plurality of flight positions during a measurement process, wherein the flight positions are a plurality of flight positions of a plurality of first paths and a plurality of second paths intersect to each other in a 3D coordinate system or in a spherical coordinate system, and the first radio signals carries a radio output power of the radio signal source;
• obtaining signal attenuations from power of the first radio signals received by the flying vehicle with reference to the radio output power of the radio signal source;
• obtaining distances between the flying vehicle at the flight positions and the radio signal source according to the signal attenuations with reference to a radio channel model;
• estimating a position of the radio signal source according to the distances between the flying vehicle at the flight positions and the radio signal source;
• obtaining a plurality of first radio characteristics of the first radio signals based on the received first radio signals, and estimating the radio wave distribution of the radio signal source according to the first radio characteristics of the first radio signals after the position of the radio signal source is estimated, wherein a plurality of first radiation patterns corresponding to the plurality of flight positions of the plurality of first paths and a plurality of second radiation patterns corresponding to the plurality of flight positions of the plurality of second paths are generated and combined to obtain the radio wave distribution of the radio signal source;
• and
• estimating a plurality of second radio characteristics of a plurality of second radio signals in the radio wave distribution according to the first radio characteristics of the first radio signals, wherein the second radio signals correspond to positions other than the flight positions during the measurement process,
• wherein a formal flight path of the flying vehicle is planned according to the position of the radio signal source and strengths of the second radio signals corresponding to the estimated second radio characteristics of the second radio signals, and
• wherein the first radio characteristics or the second radio characteristics comprise one or more than one of RSRP, RSCP, RX LEVEL, RSSI, SNR, data transmission rate, signal delay, band stability, and probability of staying connected.