AS 680/682
Supervisor Operation Description, Operation and Maintenance
ADS−B
5−24 Ed. 10.07
The ’Trackstore Size’ gives the number of entries in the software internal buffer holding the information
about the targets. Every target, i.e. every mode S address, received by the Ground Station has one
entry in the trackstore until its maximum age is reached. The trackstore is implemented as a static
hash map for fast read access. Its size must be a prime due to the used hashing algorithm.
NOTE: The use of a hash map is a very efficient possibility of storing a big amount of data, which
have to be accessed very frequently. The current hash map being used as trackstore is
of a fixed size (no dynamic memory allocation or de−allocation) for reasons of software
robustness.
5.4.9.3 HW−Interrupt and Memory
The SPB reading interval is a read−only parameter, which can be requested from the Ground Station
and shows the reading intervals (in seconds) of data input in the hardware.
The ’System’ parameter ’Free Memory’ is also read−only and shows the currently free memory on
the SPB in KB.
5.4.10 Page ’ADSB’
This page, see Fig. 5−14, defines all necessary parameters for AS 680 ADS−B processing. The
ADS−B processing can be enabled or disabled.
Fig. 5−14 Page ’ADSB’ (example)
To Next Page
Loading...