New passive helicopter detector
Sandia has developed a new helicopter detector. The device relies on the correlation between the acoustic wave from the helicopter and the resulting coupled seismic wave. A significant feature of this approach is that the detector is completely passive; there is no radio frequency radiation. Intended for deployment as a perimeter sensor around a site, the unit offers a low nuisance/false alarm rate and a high probability of detection for a wide range of helicopters. Reliable detection occurs when the target is at high altitude and also very near the earth's surface. Detection ranges start at one kilometer for the small, four-place, civilian helicopter and approach five kilometers for heavier, military types. The system has two parts: a transducer package containing a microphone and a geophone and a digital processor. Development is underway for a model which will be AC powered and well suited to permanent facilities. A prototype unit using a lightweight, battery powered processor is being constructed for rapid-deployment applications. 6 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5458419
- Report Number(s):
- SAND-85-1670C; CONF-850765-9; ON: DE85015160
- Resource Relation:
- Conference: 26. annual meeting of the Institute of Nuclear Materials Management, Albuquerque, NM, USA, 21 Jul 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HELICOPTERS
DETECTION
NUCLEAR FACILITIES
INTRUSION DETECTION SYSTEMS
CORRELATIONS
NUCLEAR MATERIALS MANAGEMENT
PHYSICAL PROTECTION
SEISMIC WAVES
SOUND WAVES
AIRCRAFT
ALARM SYSTEMS
MANAGEMENT
055001* - Nuclear Fuels- Safeguards
Inspection
& Accountability- Technical Aspects