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Modification of the Entity State PDU for Use in the End-to-End Test

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The End-To-End Test ETE is being conducted under the auspices of the Department of Defense Joint Advanced Distributed Simulation JADS Joint Test and Evaluation JTE. The purpose of the ETE is to investigate the utility of using advanced distributed simulation ADS to augment both developmental and operational testing of the Joint STARS surveillance system. The basic concept behind the ETE is to augment the Joint STARS environment with a virtual environment created by thousands of simulated entities, or targets. This virtual environment is imaged by simulations of the radar systems contained within the Joint STARS E-8C aircraft and mixed with real radar returns to provide a robust operational environment for testing of the system. The ETE Joint STARS simulation is called the Virtual Surveillance Target Attack Radar System VSTARS. Simulated entities are transmitted to VSTARS through the use of Entity State Protocol Data Units ESPDU. The simulation, or simulations, representing these entities transmit ESPDUs representing the status of each entity. This status is used to update data bases that are used to generate Joint STARS virtual radar images. Two modifications have been made to the ESPDU for use in the ETE. The first of these is a modification of the time field and is not mandatory, but is recommended. It records the time the ESPDU was created since the start of the simulation scenario. The second change to the ESPDU is performed internal to the Joint STARS simulation and is much more drastic. VSTARS must be capable of functioning anywhere needed, to include on board an aircraft during the conduct of a mission. This requires that the DIS network interface unit NIU for VSTARS exist in two parts, a ground NIU UNIU and an aircraft NIU ANIU. The GNIU remains at a fixed location and receives ESPDUs from the DIS network.

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  • Computer Programming and Software
  • Active and Passive Radar Detection and Equipment

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