UWB multi-channel m-sequence system for moisture measurements

This paper presents an ultra-wideband (UWB) system for the simultaneous measurement of multiple impulse responses. To this end, an m-sequence generator capable of generating 8 m-sequences in parallel at 10Gbps is presented. The length of the sequences can be freely adjusted up to 2¹⁵-1. Exploiting the superior properties of the auto-correlation and cross-correlation functions of preferred pairs of m-sequences only one receiving channel is needed. The intended application is the determination of the moisture content of irregularly shaped objects in free-space.