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578<br />

Section 11<br />

Entity Management family<br />

ammunition units <strong>for</strong> the secondary weapon system, <strong>and</strong> shall be represented by an 8-bit<br />

unsigned integer.<br />

The <strong>for</strong>mat of the Grouped Entity Description record 4 - Enhanced Ground Combat Soldier shall be<br />

as shown in Figure 11-3-4.<br />

Figure 11-3-4⎯Grouped Entity Description record 4 - Enhanced Ground Combat Soldier<br />

Grouped Entity Description record 3 - Basic Ground<br />

Combat Soldier<br />

Water Status 8-bit unsigned integer<br />

Rest Status 8-bit enumeration<br />

Primary Ammunition 8-bit unsigned integer<br />

Secondary Ammunition 8-bit unsigned integer<br />

Grouped Entity Description record 4 - total Size = 192<br />

bits<br />

11.3.3.5 Grouped Entity Description record 5 - Basic Rotor Wing Aircraft<br />

The specification of entity state in<strong>for</strong>mation about an individual entity within a group of rotor wing<br />

aircraft shall be represented by a Grouped Entity Description record 5 - Basic Rotor Wing Aircraft.<br />

The Grouped Entity Description record 5 shall contain the following fields:<br />

a) Entity Identifier. Each entity within a group shall be assigned an entity identifier unique<br />

within that group. The Site Identifier <strong>and</strong> Application Identifiers shall be the same as<br />

those designated in the Group Entity ID field, <strong>and</strong> shall not be transmitted. The Entity<br />

Identifier shall be represented by an unsigned 16-bit integer.<br />

b) Entity Location. Location of a grouped entity shall be specified by a set of three offsets: xoffset,<br />

y-offset, <strong>and</strong> z-offset. These offsets shall be determined by the difference, in meters,<br />

of the grouped entity from the Group Reference Point. Each offset shall be represented by<br />

a 16-bit signed integer.<br />

c) Entity Appearance. Appearance of a grouped entity shall be identical to that specified by<br />

an Entity State PDU Appearance record. This record shall be defined as a 32-bit record of<br />

enumerations (see 5.2.12 in IEEE Std 1278.1-1995). Values <strong>for</strong> the fields contained in this<br />

record are defined in Section 4 of this <strong>document</strong>.<br />

d) Entity Orientation. Orientation of a grouped entity shall be specified by three Euler<br />

angles, psi, theta <strong>and</strong> phi, in 25 milliradian increments. Each angle shall be represented<br />

by an 8-bit signed integer.<br />

e) Fuel Status. Fuel Status of a grouped entity shall be the amount of primary fuel<br />

remaining. Fuel Status shall be specified in natural units of the specific system, <strong>and</strong> shall<br />

be represented by an 8-bit unsigned integer.<br />

f) Movement Direction. Movement Direction shall be specified as a horizontal <strong>and</strong> a vertical<br />

deviation from the Entity Orientation. Each deviation shall be specified in 25 milliradian<br />

increments, <strong>and</strong> shall be represented by an 8-bit signed integer.<br />

g) Movement Speed. Speed of a grouped entity shall be the signed magnitude value of the<br />

entity’s absolute velocity vector. A negative value shall indicate that the entity is moving<br />

backwards. Entity Speed shall be specified in 0.1 meter per second increments <strong>and</strong> shall<br />

be represented by a 16-bit signed integer.<br />

h) Turret Azimuth. Turret Azimuth shall be specified in 25 milliradian increments, <strong>and</strong> shall<br />

be represented by an 8-bit signed integer.<br />

i) Gun Elevation. Gun Elevation shall be specified in 25 milliradian increments, <strong>and</strong> shall be<br />

represented by an 8-bit signed integer.

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