Definitions
General
An active sensor is
| “ | a detection device that requires input energy from a source other than that which is being sensed. An example of an active sensor is a photoconductive cell.[1] | ” |
Satellite
An active sensor is
| “ | [a] measuring instrument in the earth exploration-satellite service or in the space research service by means of which information is obtained by transmission and reception of radio waves.[2] | ” |
Surveillance
An active sensor is
| “ | a detection device that emits energy capable of being detected by itself. An example of an active sensor is a measuring instrument that generates a signal, transmits it to a target, and receives a reflected signal from the target. Information concerning the target is obtained by comparison of the received signal with the transmitted signal.[3] | ” |
References
- ↑ Federal Standard 1037C:Glossary.
- ↑ 47 C.F.R. §2.1.
- ↑ Federal Standard 1037C:Glossary.