This is an old revision of the document!
Synthetic data files are IRIG 106 Ch 10/11 data files that are totally synthesized in software. Synthetic data files are useful for a couple of reasons.
Synthetic data solves both of these problems.
Data is synthesized in several steps. Both GOTS and custom software applications are used to generate data files.
The GOTS BlueMax software application is used to generate realistic flight path data. BlueMax allows designing a flight profile at a very high level of abstraction. From this flight scenario BlueMax calculates about 150 flight parameters such as aircraft position, attitude, speed, accelerations, angle of attack, throttle setting, etc.
The output of BlueMax is read in to an SQL database to facilitate further processing.
The BlueMax aircraft state data is then played back and used to drive the XPlane aircraft simulation software application. At each point in time a screen capture is made of the XPlane screen. The captured screen bitmap is the fed into a video encoder. The video encoder takes the series of screen bitmaps and converts them into a series of MPEG Transport Stream packets. These TS video packets are then written to the same SQL database as the BlueMax aircraft state data. The process can be repeated with different XPlane views to make multiple video streams. Video encoding is a very CPU intensive process. Precomputing the video data that goes along with the aircraft data makes the generation of IRIG 106 data files much more efficient.