Patent ID: 8175274

Claim:
An apparatus for measuring a range based on a chaotic ultra wideband (UWB) wireless communication technology, comprising: a chaotic signal generating/modulating unit configured to generate and modulate a chaotic signal and to output the modulated chaotic signal to a transceiving unit; the transceiving unit configured to transmit the modulated chaotic signal or to receive a radio signal; a detecting unit configured to output an analog voltage signal according to the received radio signal; a transform unit configured to convert the analog voltage signal from the detecting unit into digital signals based on a first sampling period; a comparison unit configured to compare the analog voltage signal from the detecting unit with a predetermined threshold value and to output a comparison signal; and a range measurement unit configured to calculate a time point corresponding to a leading edge, which is a moment when initial data of a packet payload arrive, by using the digital signals based on the threshold value and by using the comparison signal, and to perform a range measurement calculation based on the time point corresponding to the leading edge.