Network analysis of a multi-node net with a tactical communications protocol

The U.S. Army Research Laboratory (ARL) has conducted hardware-in-the loop experiments using combat net radios, message drivers, and tactical communications protocols to quantify the effects of network load parameters on the throughput and delay of a small combat radio net. A virtual reality network management tool will enhance the data analysis. The Situation Awareness Virtual Environment for Command, Control, and Communications (SAVEC3) Net Battle Management Tool is a software package developed by Quality Research. The tool currently displays a network level statistics window and individual statistics icons for each node and link. A statistical tool has been developed to provide performance analysis of the data stream beyond the simple net status currently available. In its present standalone form the statistical tool gets its input from data collected during previous experiments. The statistical tool has the capability to open individual link and node statistics windows displaying optional data such as the recent time history of link or node utilization, retransmit statistics, and effective throughput and message delay, thereby enhancing network performance analysis. The software calculates and logs network statistics continuously for all elements supported by the processed data, and a choice of statistical measures can be displayed on demand for the operator. The software calculates the statistical measures both from the start time and from an operator-selectable time interval. The network statistics are presented by graphical displays in operator-selectable windows, as well as numerical boxes.