ACM for Windows
Techical Note #2
IEEE 1278 DIS Compliance

ACM emits and recognizes the following DIS PDU Types:

Entity State
Fire
Detonation
Electromagnetic Emission

ACM uses the DIS/x DIS interface library. DIS/x supports dead reckoning of external entities using any of these methods:

Name Enumeration Value
Static 1
FPW 2
RPW 3
RVW 4
FVW 5

These dead reckoning methods are currently unsupported by DIS/x:

Name Enumeration Value
FPB 6
RPB 7
RVB 8
FVB 9
RVW 10

Entities managed by ACM emit entity state PDU’s specifying the RPW(3) dead reckoning method. No articulation parameters are currently sent by entities managed by ACM. As with most current DIS-based simulations, altitudes are expressed as heights above the WGS-84 ellipsoid, not as heights above the geoid. Dead reckoning threshold values are hard-coded in this version of the product:

Description Value
Maximum time between Entity State PDUs 5 seconds
Dead Reckoning Cartesian distance error 3 meters
Dead Reckoning angular orientation error *not currently tested*
   

When operating in IEEE 1278 mode, the default UDP port number for PDU transmission is 3000.

Last Updated 04/24/99