Tag Archives: L-Band

2018-02-14
19:32
by: trango

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 ,

2017-05-03
21:34
by: trango

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

2017-05-03
15:33
by: trango

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 →

Posted in GOES Tagged ,

2014-12-09
00:50
by: trango

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 →

Posted in Inmarsat, Projects Tagged ,

2014-11-10
02:01
by: trango

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 →

Posted in Inmarsat Tagged

2014-11-10
01:17
by: trango

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 →

Posted in Inmarsat, Projects Tagged , ,

2014-10-17
02:34
by: trango

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 →

Posted in Inmarsat, Projects Tagged ,

2014-10-11
03:34
by: trango

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 →

Posted in Inmarsat, Projects Tagged ,

2014-10-05
23:57
by: trango

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 →

Posted in Inmarsat, Projects, Uncategorized Tagged , ,

2014-10-02
21:41
by: trango

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 →

Posted in Inmarsat, Projects, SATCOM Tagged , ,