The wireless sensor network system in a reusable rocket with ZigBee operating at 920MHz

This paper demonstrates experimental evaluation results of a wireless sensor network system inside a reusable rocket. Major requirements to realize the reusable rocket for future space development, light weight, low cost, and frequently operation such as planes. Wireless system instead of conventional wired electric system is strongly demanded. To validate effectiveness of a 920-MHz band ZigBee network system, a bread board model of 920-MHz band transceiver is designed and fabricated. Also, PC application is developed for the measurement of the sensor data. Four time slots are utilized for robust communication. Received signal strength indicator (RSSI) and packet error rate (PER) is measured using the reusable vehicle test (RVT).