METEOR-M High Resolution Picture Transmission (HRPT)
| | |
|---|---|
| Frequencies | 1700 MHz |
| Frequency Range | 1700 MHz - 1700 MHz |
| Mode | RAW |
| Modulation | PSK |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 3 MHz |
| Location | Worldwide |
| Short Description | A variant of the NOAA HRPT signal, which has a different data structure and better low-signal handling characteristics. |
| I/Q Raw Recording | — |
| Audio Sample | — |
The Meteor-M series of satellites transmit high resolution pictures from the MSU-MR (main radiometer) and additionally, data from MTVZA (a microwave sounding instrument) over an HRPT link. However, while the signal is still being PSKPhase-Shift Keying modulated, the data structure is different than the NOAA HRPT signal. This gives improved low-signal handling characteristics and makes the signal incompatible with NOAA HRPT decoders.
Data transmitted[edit]
- 6 channels from MSU-MR radiometer
- 30 channels from MTVZA microwave sounder
- DCP (Data Collection Platform) data
- BIS-M (onboard information system) data
- Spacecraft RTC (Real Time Clock)
- Spacecraft telemetry
Data structure[edit]
The signal is transmitted as a continuous sequence of phase-shift keyed Manchester encoding at 665.4 Kbit/s rate (transport rate is 1330.8 Kbit/s). Logical "1" is represented by symbol “10” (two bits), and logical "0" - by symbol "01" (two bits).
Data is packed into frames that are sent continuously one after another without intervals using time-division multiplexing. One frame consists of 1024 bytes. The most significant bit of each octet comes first.
Signal characteristics[edit]
- Right-hand circular polarization
- Phase shift keying modulation
- 3 MHzMegaHertz (MHz) 10^6 Hz bandwidth
- Transmit power 5 watts
Satellites transmitting METEOR-M HRPT[edit]
| Satellite | Frequency | Notes |
|---|---|---|
| METEOR-M N1 | 1700 MHzMegaHertz (MHz) 10^6 Hz | Turned off |
| METEOR-M N2 | 1700 MHzMegaHertz (MHz) 10^6 Hz | Turned off |
| METEOR-M N2-2 | 1700 MHzMegaHertz (MHz) 10^6 Hz | Turned off |
| METEOR-M N2-3 | 1700 MHzMegaHertz (MHz) 10^6 Hz | |
| METEOR-M N2-4 | 1700 MHzMegaHertz (MHz) 10^6 Hz |