# Combining multiple sub-1 GHz frequencies in Radio Tomographic Imaging

> Research article (2016 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2016) · cited 12× · AI/ML

**Wikidata**: [openalex:W2550662678](https://www.wikidata.org/wiki/openalex:W2550662678)  
**Source**: https://4ort.xyz/entity/combining-multiple-sub-1-ghz-frequencies-in-radio-tomographic-imaging