High Range Resolution Frequency-Hopping Sensor System

Wireless sensor is recently playing an important role in improving the quality of life on our daily indoor space, and especially UWB-IR sensor has attracted considerable attention owing to the high ranging accuracy and multipath resistance. However, it may be difficult to occupy very broad continuous frequency band because of available spectrum shortage. Therefore it is important to consider a new approach in order to coexist with the other radio systems. This paper presents a high range-resolution frequency-hopping (FH) wideband sensor where each transmit narrowband frequency is hopped cross many guard-bands available. The FH sensor provides the high range resolution by embedding the sharp spectrums into the guard-bands in frequency domain. The measurements and simulations were conducted and the performance is investigated.