# Geological detection of hard rocks by GPR and signal time-frequency characteristics analysis in urban underground trenchless construction

> Research article (Measurement Science and Technology, 2023) · cited 13× · AI/ML

**Wikidata**: [openalex:W4390042873](https://www.wikidata.org/wiki/openalex:W4390042873)  
**Source**: https://4ort.xyz/entity/geological-detection-of-hard-rocks-by-gpr-and-signal-time-frequency-characteristics-analysis-in-urban-underground-trench