Loading patent…
AssigneeKorea Advanced Institute of Science and Technology
InventorsSong Min KIM, Kangmin BAE, Hankyeol MOON
Estimating the term…
In an existing method of measuring a location of a communication device by using FMCW radar, a frequency reflected from the communication device is used, and a method of calculating a difference between a frequency of a transmission signal of the FMCW radar and a frequency of a reflect wave reflected from the communication device is used. However, in the process of identifying the frequency difference, frequency difference is measured with a frequency resolution a reciprocal of a unit chirp time length, and the exact frequency cannot be measured. The present disclosure is to solve the above problem, and provides the effect of quickly and accurately measuring a distance between an FMCW radar and a communication device by using the FMCW radar and a frequency modulation tag, by transmitting a continuous chirp signal from the FMCW radar, simultaneously calculating an intermediate signal (IF), which is the frequency difference between transmitted and received signal, and demodulating the accurate modulation frequency f_m.
A location measurement system of a communication device using an FMCW radar, comprising:
A method of measuring a distance between an FMCW radar and a frequency modulation tag using the FMCW radar and the frequency modulation tag, the method comprising:
Dependencies are inferred from the claim text.