Radio-frequency signal distance measurement method and system

• Main Authors: HUANGFU WEI, XING YIKANG, HE JIE
• Format: Patent
• Language: Chinese; English
• Published: 11.05.2016
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention provides a radio-frequency signal distance measurement method and system which are capable of estimating a distance between an emission node and a receiving node on the premise of independence of radio-frequency receiving signal intensity measurement hardware. The method comprises the steps of: obtaining a relation table between occurance probabilities of different distance measurement codons and a distance between nodes, wherein the distance between the nodes is the distance between the emission node and the receiving node; emitting a distance measurement grouping row through the emission node, wherein the distance measurement grouping row comprises a plurality of groups of different radio-frequency emission power levels, and the grouping content includes radio-frequency emission power information of the group; receiving the groups emitted by the emission node through the receiving node, constructing the distance measurement codon according to the receiving result of the receiving node; estimat