New Inmarsat Aero-H and H+ Decoder in Development

Another new decoder project is in the works. This is another Multi-Channel decoder for Aero but instead of just ACARS and CPDLC it does AMBE and LPC voice decode. The screenshot below shows call logging status output from the prototype decoder. Like the Aero-P project this decoder uses the same control or NCS channels that carries the ACARS/CPDLC traffic except this application focuses on call “following” and directs up to 8 other decoders for actual voice demodulation. Note the captured call highlighted in yellow below. That is a 519 second AMBE call that was classified as non-safety from the aircraft associated with ICAO address 7CF865, which happens to be an Airbus A-300 registered to the Royal Australian Air Force (RAAF). You can look it up yourself at airframes.org.

Status output from decoders.

Status output from decoders.

The AMBE algorithm for Aero is owned by DVSI and therefore requires licensed HW or SW. I am using licensed HW as shown below. This card was available from DVSI but may no longer be due to the inability for them to acquire all the legacy parts to build the boards! I purchased the board a couple years ago for a Mini-M project.

DVSI AMBE DSP Board.

DVSI AMBE DSP Board.

More updates later as the project continues development.This software is intended for commercial use so please don’t ask if you can download it.

Category(s): Inmarsat, Projects
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