Quantum sensing & metrology to enhance existing ground penetrating radar technology, electromagnetic sensors and classical gravimeters, which fall short on accuracy, range, material detectability and length of time for set up, stability and operation. Examples are as follows: - [sinkhole searching](https://theconversation.com/how-to-detect-a-sinkhole-before-it-swallows-you-up-101543) to see below the ground, before they swallow us up or we start construction work through super sensitive [gravity mapping sensors](https://www.birmingham.ac.uk/research/quantum-technology/gravity-quantum-technology.aspx) - [Disused mineshaft exploration & mineral extraction](https://www.springwise.com/quantum-gravimeter-takes-ultra-precise-measurements-gravity-force/) - [Quantum Surveying](https://www.linkedin.com/pulse/quantum-surveying-tomorrow-today-steve-carden/) & 3D map building to understand material density, identify undetectable buried objects before digging and see through the ground without digging using gravity sensing. - _Early detection of distant objects & Unspoofable navigation aids_ through [quantum radars](https://phys.org/news/2022-01-quantum-radar-boost-accuracy-thought.html) offering increased sensitivity, range, resistance to jamming/spoofing, lower power. They use **quantum correlations** to increase the sensitivity over the classical radar at lower signal energy. - [Emissions Monitoring](https://www.azocleantech.com/article.aspx?ArticleID=941) through 1000x sensitive detectors measuring photons of light to evaluate the absorption of the light by methane or carbon dioxide. ## Noteworthy Initiatives [[Enhancing Leak Detection and Repair]]