Concept and simulation of an antenna tracking system for sounding rockets
Başlık çevirisi mevcut değil.
- Tez No: 798047
- Danışmanlar: Belirtilmemiş.
- Tez Türü: Yüksek Lisans
- Konular: Astronomi ve Uzay Bilimleri, Havacılık ve Uzay Mühendisliği, Astronomy and Space Sciences, Aeronautical Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2017
- Dil: Almanca
- Üniversite: Technische Universität Berlin
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 78
Özet
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Özet (Çeviri)
One of the key studies in atmospheric science is examining and understanding the effects of human-made greenhouse gases in the atmosphere.“Indonesian National Institute for Aeronautics and Space”and“Chair of Space Technology in TU Berlin”established a mission, which is called as“Development Support for RX-320 sounding rocket payload compartment and atmospheric payload”, to do measurements, in the stratosphere and troposphere layers, such as temperature, pressure, humidity, wind speed and direction, Ozone and CO2 densities. According to operational requirements of the mission, the payload shall be launched by the RX-320 sounding rocket up to 40 km altitude and be separated by the separation system which is developed by TU Berlin and descent with a parachute with a defined average rate to the ground. On the telecommunication point of view, channel capacity can increase remarkably by employing a highly directive antenna for receiving telemetry signal. Due to, the beamwidth of directional antennas are narrow; an antenna tracking concept must be realised to support the reception of the payload data during launch and descent phases. This thesis focuses on designing antenna tracking system for sounding rockets with the example of RX-320. This thesis presents how to find the direction of arrival of the telemetry signal from the rocket and track the signal to achieve antenna tracking duty. In this thesis, MATLAB and Simulink simulation tools are used to determine optimum tracking system parameters. FH/BPSK spread spectrum signals are considered as telemetry signal. The noise in the channel is assumed as independent additive white Gaussian noise. The Doppler frequency shift in the signal due to the sounding rocket movement is much smaller than signal bandwidth. The simulation shows that crosscorrelation tracking method is appropriate to track sounding rockets which have FH/BPSK as a telemetry signal.
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