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  2. Ground-penetrating radar - Wikipedia

    en.wikipedia.org/wiki/Ground-penetrating_radar

    It is a non-intrusive method of surveying the sub-surface to investigate underground utilities such as concrete, asphalt, metals, pipes, cables or masonry. [1] This nondestructive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from subsurface structures ...

  3. Cable locator - Wikipedia

    en.wikipedia.org/wiki/Cable_locator

    Different cable locators employ different methods to function. The two known methods, Passive Utility Detection locating naturally present or naturally produced signals known as a passive signal. The other is to locate a signal that is applied AKA an Active signal , [7] are called the Passive Utility Detection and Active Utility Detection.

  4. Utility location - Wikipedia

    en.wikipedia.org/wiki/Utility_location

    Utility locating is the process of identifying and labeling public utility mains that are underground. These mains may include lines for telecommunication , electricity distribution , natural gas , cable television , fiber optics , traffic lights , street lights , storm drains , water mains , and wastewater pipes.

  5. Subsurface utility engineering - Wikipedia

    en.wikipedia.org/wiki/Subsurface_utility_engineering

    It provides information for the precise plan and profile mapping of underground utilities through the actual exposure of underground utilities (usually at a specific point), and also provides the type, size, condition, material and other characteristics of underground features. Exposure is typically achieved through hand digging or Hydro-Vacuuming.

  6. Geophysical survey - Wikipedia

    en.wikipedia.org/wiki/Geophysical_survey

    Detection and analysis of the geophysical signals forms the core of Geophysical signal processing. The magnetic and gravitational fields emanating from the Earth's interior hold essential information concerning seismic activities and the internal structure. Hence, detection and analysis of the electric and Magnetic fields is very crucial.

  7. Subsurface utilities - Wikipedia

    en.wikipedia.org/wiki/Subsurface_utilities

    Subsurface Utilities are the utility networks generally laid under the ground surface. These utilities include pipeline networks for water supply, sewage disposal, petrochemical liquid transmission, petrochemical gas transmission or cable networks for power transmission, telecom data transmission, any other data or signal transmission.

  8. List of military electronics of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_military...

    AN/AAS - Airborne Infrared Search and Detection Equipment Designation Purpose/Description Location/Used By Manufacturer AN/AAS-1: Infrared Scanner (REDBIRD) B-26 Marauder: AN/AAS-14: Infrared Detecting Set, part of AN/UAS-4: OV-1C Mohawk: AN/AAS-15: Infrared search and track (IRST) system: F-8 Crusader: AN/AAS-18: Infrared (IR) Reconnaissance Set

  9. Exploration geophysics - Wikipedia

    en.wikipedia.org/wiki/Exploration_geophysics

    Ground penetrating radar is a non-invasive technique, and is used within civil construction and engineering for a variety of uses, including detection of utilities (buried water, gas, sewerage, electrical and telecommunication cables), mapping of soft soils, overburden for geotechnical characterization, and other similar uses. [5]