SBS3 - Decoding Port 10001

[Martin Waller]

I'm looking at decoding data from port 10001 of the SBS-3. In particular I'd like to decode the Mode S Data Long Format packets.

I have access to the Kinetic API Reference Guide and I can see packates of type 0x05 being send by the SBS-3. Typically this data may look like:

10 02 05 00 E8 3D 3C A0 00 06 BC FB B3 45 24 7F
C4 8E 48 4C 53 10 03 B6 52

which is nicely bracketed by the DLE, STX, ..., DLE, ETX and CRC. That leaves me with the data in the middle:

05 00 E8 3D 3C A0 00 06 BC FB B3 45 24 7F
C4 8E 48 4C 53

Which is a 0x05 packet - the Mode S Data - Long Format packet. The documentations suggests that this then breaks down as:

Byte 0 - Packet Type
Byte 1 - Not used
Byte 2 - 4 timestamp
Byte 5 - 18 14 bytes of Mode S Data

So the 14 bytes are:

A0 00 06 BC FB B3 45 24 7F C4 8E 48 4C 53

The last three 48 4c 53 seem to be the address code - possibly reversed.

My question is, does anyone know how to decode the rest of the packet? Is it encrypted, is it documented, can anyone provide any guidence on how to decode this please?

Many thanks

Martin

[Martin Waller]

Hello, many thanks to all that have read this message but I'm now sorted.

Martin

[lanek]

Hi Martin,

How did you end up decoding this message? I have contacted Kinetic support and asked them to provide documentation.

Lane

[Anmer]

I have contacted Kinetic support and asked them to provide documentation.

Kinetic has published an API:

http://www.kinetic-avionics.com/newsite/api.php

[lanek]

Yes, I have looked at the API Document v 1.03 and all it says is this

0x01 - ADS-B or TIS-B data (KAL_PKT_MODES_ADSB)
Byte 0 - packet type
Byte 1 - not used
Byte 2-4 - Rolling timestamp - in 50ns intervals
Byte5-18 - the 14 bytes of Mode S data.

As the original post asks, what is the Mode S data? I am still yet to receive a reply from Kinetic and it has nearly been 1 week.

[Anmer]

I am still yet to receive a reply from Kinetic and it has nearly been 1 week.

I suspect you won't get a reply from Kinetic.  No one's heard anything from them for months.

[acarslogger]

Hi

Assuming the data on port 10001 is the same as the raw data output by Basestation on port 30006, then it's defined in ICAO Annex 10.

Google, or try this as a starter  http://legacy.icao.int/anb/panels/scrsp/docs/Doc.9871-E2-20110425.pdf  .

Good luck !
Stuart

[lanek]

Thank you every one for your comments.

I received a reply from Taylor Made RF, who stated that I need to refer to the following documents: DO-260/A/B or ED-102A

So far I am unable to find them. However, this looks like it will be useful.

Google, or try this as a starter  http://legacy.icao.int/anb/panels/scrsp/docs/Doc.9871-E2-20110425.pdf  .

I think I have found the Annex 10 document to the one above here:  http://www.google.com.au/url?sa=t&rct=j&q=icao%20annex%2010%20digital%20data%20communications&source=web&cd=4&ved=0CD0QFjAD&url=http%3A%2F%2Fwww.bazl.admin.ch%2Fexperten%2Fregulation%2F03080%2F03081%2Findex.html%3Flang%3Dit%26download%3DNHzLpZeg7t%2Clnp6I0NTU042l2Z6ln1ah2oZn4Z2qZpnO2Yuq2Z6gpJCDeoB9fGym162epYbg2c_JjKbNoKSn6A--&ei=lpkJUb2qJKrjiAKV8YCQCw&usg=AFQjCNFvU1FqdsHNIImC2PG-2bSIGPJpXA&cad=rja

[lanek]

I have been informed that DO-260 is available from RTCA
http://www.rtca.org/onlinecart/product.cfm?id=512 and ED-102A from Eurocae http://boutique.eurocae.net/catalog/product_info.php?products_id=271 at a cost of $500-1000 each.

[Anmer]

at a cost of $500-1000 each.

Or free in electronic format for RTCA members.

[lanek]

Yes, free. I was aware of that but I do not know any one with a RTCA membership.