Introduction

Sky Observer (Beta) is a desktop ADS-B receiver, decoder and tracker software.

SkyObserver Main Window

Sky Observer can receive and proess ADS-B & Mode-S messages from commercial or homemade ADS-B/Mode-S receiver hardware, extract flight information and make tracking. It can also output flight information in standard ASTERIX cateotry 21 format.

Sky Observer can change your PC to an ADS-B Ground Station System.

ADS-B Message

Sky Observer is capable to process the following types of ADS-B messages.

ADS-B Message Type DO-260 DO-260A DO-260B
Airborne Position Message YES YES YES
Surface Position Message TBD TBD TBD
Aircraft Identity and Category Message YES YES YES
Airborne Velocity Message (Ground) YES YES YES
Airborne Velocity Message (Air) TBD TBD TBD
Aircraft Status Message (Emergency) TBD TBD TBD
Aircraft Status Message N/A N/A TBD
Target State and Status Message N/A TBD TBD
Aircraft Operational Status Message (Airborne) N/A YES YES
Aircraft Operational Status Message (Surface) N/A YES YES
Note
YES - Message is supported.
TBD - Message is not supported in current version but will be supported in future version.
N/A - Not appliable.

Mode-S Message

Sky Observer is capable to process the following types of Mode-S messages.

Downlink Format Fields Status
DF-4 FS, DR, UM, AC, AP YES
DF-5 FS, DR, UM, ID, AP YES
DF-11 CA, AA, PI YES
DF-17 CA, AA, ME, PI YES
DF-18 CF, AA, ME, PI TBD
Note
YES - Message is supported.
TBD - Message is not supported in current version but will be supported in future version.
N/A - Not appliable.
SkyObserver Mode-S Message View

Receiver Hardware

Sky Observer is designed to work with any receiver hardware which can send received Mode-S messages to Sky Observer by LAN or other interfaces.

Currently we are developing and testing it with Radar Cape.

Radar Cape

We appreciate if any one can support us to interface with other receiver devices!

ASTERIX Output

Sky Observer is able to output received ADS-B tracks in Eurocontrol ASTERIX format.

The supported cateories and versions are:

  • Target reports in CAT021 version 0.23
  • Target reports in CAT021 version 0.26
  • Target reports in CAT021 version 2.1
SkyObserver ASTERIX Message View