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Intruder detection system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1970 |
| Description | Moving coil geophones are utilized to develop a small, rugged, battery operated system capable of detecting seismic disturbances caused by intruders. Seismic disturbances sensed by each geophone are converted into electrical signals, amplified, and transmitted to remote receiver which provides listener with aural signal. |
| File Size | 683120 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19700000618 |
| Archival Resource Key | ark:/13960/t8rc1sx32 |
| Language | English |
| Publisher Date | 1970-11-01 |
| Access Restriction | Open |
| Subject Keyword | Electronic Systems Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |