Loading...
Please wait, while we are loading the content...
Similar Documents
Emergency locating transmitter
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1991 |
| Description | A transmitter generates three signals for sequential transmission. These signal are an unmodulated r.f. carrier, a r.f. carrier amplitude modulated by a first audio frequency waveform and a r.f. carrier amplitude modulated by a second audio frequency waveform which is distinguishable from the first and which may be employed as a means for identifying a particular transmitter. The composite, sequentially transmitted signal may be varied in terms of the individual signal transmission sequence, the duration of the individual signals, overall composite signal repetition rate and the frequency of the second audio waveform. Various combinations of signal variations may be employed to transmit different information. |
| File Size | 958419 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910022216 |
| Archival Resource Key | ark:/13960/t85j2fb6k |
| Language | English |
| Publisher Date | 1991-05-07 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Position Location Transmitters Audio Frequencies Waveforms Emergencies Signal Transmission Amplitude Modulation Frequencies Identifying Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
