In this study a low-cost environmental data monitoring system for sounding rocket is developed based on Internet of Things (IoT) and several sensors. Rocket sounding can investigate the physical and chemical properties of the atmosphere. We propose to build rocket operated by Raspberry Pi with low cost monitoring sensors that can provide real-time altitude, pressure, humidity and temperature with 0.1 second time interval. Temporal resolution of the low-cost gas sensors is one second, therefore, can only be used to monitor the surrounding environment before and during the flight operation. Experimental and simulated values are analyzed and compared to understand the atmospheric dynamics. This study will help space physics community to develop high altitude sounding rocket. Keyword: Internet of Things, Rocket Sounding, Raspberry Pi I. INTRODUCTION The objective of this work is to assemble a compact small model rocket to monitor environmental data using IoT. In this work, the basic challenge of sounding rocket is to deal the dynamic nature of the system. Here the nature of the system depends on the type of fuel, atmospheric dynamics at different altitude, weight of the payload and parachute. The typical flight duration of sounding rockets to reach the apogee is 2-20 seconds [1]. Therefore, sufficient amount of data collection from the low-cost sensors is the challenging part in this research. Raspberry Pi (RPi) can overcome the challenges. Many agencies from several countries have done scientific experiments, which are popularly called sounding rockets [1]. National Aeronautics and Space Administration (NASA) established NASA Sounding Rocket Program in 1959 [2]. Recent works on sounding rockets and the references are given [3]-[8]. Model rockets face some limitations such as comparatively low range, short span of the mission and limited payload capability. High-Altitude Balloons (HAB) [9]-[10] and unmanned aerial vehicles (UAV) commonly known as drones [11] have relatively longer mission life. Despite this fact our model rocket is relatively inexpensive to collect valuable data which may use in future to develop a sounding rocket. In fact, this project shows that the cost of sounding rocket is less expensive than operating HAB and drones. This paper is valuable to the Space Physics Community and the atmospheric researcher who regularly deal with the remote-control space weather and meteoroidal data. In this paper relatively high temporal resolution (i.e., 0.1 sec) low-cost sensors record pressure, altitude and temperature. The data are stored in a micro SD card as well as firebase server. Atmospheric data such as measuring SO 2 , NO 2 , CO 2 and CH 4 are not collected from the payload due to the limitation of relatively poor temporal resolution (e.g., 1 sec) of the sensors. Atmospheric data, therefore, are analysed to monitor the surrounding environment around the launch platform and were compared with the data collected from air pollutants monitoring agency, such as, Airnow [12] and Bangladesh Meteorological Depart...
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