Unidentified oddity and meteor radar on 31 MHz
From Signal Identification Wiki
 | |
|---|---|
| Frequencies | 31 MHz |
| Frequency Range | 31 MHz - 31 MHz |
| Mode | AM |
| Modulation | Pulsed |
| ACF | — |
| Bandwidth | 70 kHz,2 kHz |
| Location | Worldwide |
| Short Description | A meteor radar (likely part of Nordic Meteor Radar cluster, quite likely SKiYMET type) and an oddity on 31 MHz. |
| I/Q Raw Recording | — |
| Audio Sample | |
This sporadic E catch contains two signals:
- A pulsed radar with 430 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). pulse rep rate, center frequency 31 MHzMegaHertz (MHz) 10^6 Hz, bandwidth at least 60 to 70 kHzKiloHertz (kHz) 10^3 Hz but can be more. This very likely belongs to Nordic Meteor Radar Cluster [1][2] that has two radars on 31 MHzMegaHertz (MHz) 10^6 Hz with such rep rate in Alta and Svalbard, Norway. The type of this radar is not known but it may be a SKiYMET radar.
- An oddity signal that transmits groups of pulses, with pulse repetition rate roughly 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). and group repetition rate 19 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).. It may be a radar as well. Local interference (QRM) is unlikely as it faded in and out. Bandwidth of this signal was only 2 kHzKiloHertz (kHz) 10^3 Hz but it's not easy to determine accurately.
Samples[edit]
Frequencies[edit]
31 MHzMegaHertz (MHz) 10^6 Hz
Video Examples[edit]
Additional Links[edit]
Additional Images[edit]
References[edit]
- ↑ vhfskip group: VHFVery High Frequency (30-300 MHz) radars - https://groups.io/g/vhfskip/files/VHF%20Radars.pdf
- ↑ Stober et al.: Atmospheric tomography using the Nordic Meteor Radar Cluster and Chilean Observation Network de Meteor Radars: Network details and 3D-Var retrieval - https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2829851
