Geocast-based situation awareness

A computer readable storage medium that is not a signal comprising computer executable instructions stored thereon that when executed by a computing device cause said computing device to effectuate operations comprising:

• receiving, by a first device, a geocast message,
• wherein the geocast message comprises information associated with a geocast region;
• providing, by the first device, instructions to generate a common operating picture for a plurality of devices based on the geocast message, wherein the common operating picture comprises a velocity vector bar associated with a second device;
• rendering the velocity vector bar with a length on a display, wherein the length of the velocity vector bar is a relative indication of speed;
• and
• generating, for the common operating picture, a number of transmissions proportional to n log n, where n is the number of devices within a single reception area.

A device comprising:

• a processor;
• and
• a memory coupled with the processor, the memory comprising executable instructions that when executed by the processor cause the processor to effectuate operations comprising:
• receiving a geocast message,
• wherein the geocast message comprises information associated with a geocast region;
• providing instructions to generate a common operating picture for a plurality of devices based on the geocast message, wherein the common operating picture comprises a velocity vector bar associated with a second device;
• rendering the velocity vector bar with a length on a display, wherein the length of the velocity vector bar is a relative indication of speed;
• and
• generating, for the common operating picture, a number of transmissions proportional to n log n, where n is the number of devices within a single reception area.