16 hours ago
MetOp-B morning pass.
#XHRPT and #UltraTrack
@SDRPlay RSPdx for the IQs https://t.co/H4AbuWYn6r
1 day ago
The mysterious #ISS signal on 137.626MHz continues. Months since first detected it would appear it emits from something fairly permanently attached to the space station. https://t.co/GFb9GQrKsG
2 days ago
FengYun-3B from yesterday. I was out enjoying the wild and scenic outdoors - i am under one of those thunderheads at the time of this pass!
#XHRPT and #UltraTrack https://t.co/LxZLV6jCFM
3 days ago
Here is something cool! You can listen to the 80 hours of Tianwen-1 accelerometer data (X,Y channels as stereo audio) in 1 minute, 5000x sped up. Periodic pings are used for stabilization, louder hiss periods are burns that preceded TCM1 maneuver.
(headphones highly recommended) https://t.co/VrElH11rJc
4 days ago
I wanted to wait until it unbearable hot before starting this build. Unfortunately it only got to 35°C today.
i had to deal with a few missing things from the kit, but coming together nicely so far. https://t.co/TsrhjFpyxa
Tag Archives: L-Band
XHRPT Update
Getting close to releasing XHRPT decoder. Upgraded to now decode MetOp-A/B, FengYun-3A/B/C in addition to the previously supported NOAA-18/19/15 and Meteor-MN2. Here is a short video of a typical pass of MetOp-B AHRPT. The video has been speed up, so … Continue reading
Posted in Satellites, Spacecraft
Tagged L-Band, Software
Cyberspectrum #20 (WX Satellites) Slides
Yep, better late than never… Here are the slides from my WX Satellite presentation at Cyberspectrum #20 in the Fall of 2016. cyberspectrum_wx_sats_r4 Warning, it’s a big (45MB) PDF file because it includes quite a few images. Good Luck!
Posted in GOES, Satellites
Tagged L-Band
XRIT Decoder for GOES Satellite
NOAA’s GOES-13 (East), GOES-15 (West) and now GOES-16 produce some amazing images. Both GOES-13 and GOES-15 broadcast weather images to users with suitable ground stations using a protocol called LRIT (Low Rate Information Transmission). GOES-16, a more advanced satellite does … Continue reading
AirSpy working with Inmarsat Decoder
My new AirSpy SDR arrived last week. The goal this weekend was to make a small application to stream the IQ over Ethernet and then test it with one of the Inmarsat decoders that I have previously developed. The API … Continue reading
Blue Force Tracking on Inmarsat
Blue Force Tracking is a GPS-enabled system that give US Military the location of “friendly” military forces. You can read more about it on Wikipedia. Inmarsat is one of the commercial satellite providers that has a contract with the the … Continue reading
Inmarsat Antenna Distribution
Inmarsat L-Band signals from both CONUS and POR need to be routed to various receivers and SDRs, this distribution system is a pretty simple solution (as shown below). It’s based on taking an L-Band signals from a dish, where pre-amplification … Continue reading
Aero Decoding and Full Support for HackRF One
After some work it is now possible to fully support HackRF One with my Inmarsat Aero decoder. In the past, the Inmarsat Aero decoder used two SDRs (each covering 2MHz) to cover up to 4MHz of L-Band spectrum as well … Continue reading
Adding External Reference to HackRF One SDR
The HackRF One SDR is a great value but it’s frequency stability leaves something to be desired. Using the Si5338 clock generator from Silicon Laboratories is an easy way to address the problem (if it’s really a problem for your … Continue reading
HackRF One and Decoders
I’m always looking for opportunities to reduce the costs associated with high quality decoding tasks. The HackRF One is intriguing because it’s not very expensive, has a wide band receiver (10MHz – 6GHz) and an SDR that is capable of … Continue reading
Aero Coverage of POR and CONUS
The diagram below illustrates the current Aero coverage that is possible here at USA-Satcom. As you can see there is quite a bit of IQ bandwidth to deal with and consequently at least two i7 hex core machines are needed … Continue reading
