title: ÐÑÐ¸ÐµÐ¼ Ñ Ð¼Ð°Ð»ÑÑ ÐºÐ¾ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÐ¾Ð² ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ñ ÑÐ°Ð·Ð¾Ð²Ð¾Ð¹ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸ÐµÐ¹ Ð¿ÑÐ¸ Ð½Ð°Ð»Ð¸ÑÐ¸Ð¸ ÑÑÑÐµÐºÑÐ° ÐÐ¾Ð¿Ð»ÐµÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Reception from small spacecraft of phase modulated signals in the presence of the doppler effect
Creators: name: ÐÐ°Ð½ Ð¦Ð¸ÑÐ°Ð½Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ñ bpsk
ÑÑÑÐµÐºÑ Ð´Ð¾Ð¿Ð»ÐµÑÐ°
Ð´Ð¾Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ¸Ð¹ ÑÐ´Ð²Ð¸Ð³
ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ðµ ÑÐ¿ÐµÐºÑÑÐ°
ÑÐ°Ð·Ð¾Ð²ÑÐ¹ ÑÐ´Ð²Ð¸Ð³
ÑÐ¸Ð½Ñ ÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ°ÐºÑÐ¾Ð²Ð¾Ð¹ ÑÐ°ÑÑÐ¾ÑÑ Ð¸ Ð½ÐµÑÑÑÐµÐ¹
Ð¿ÐµÑÐ»Ñ ÐºÐ¾ÑÑÐ°ÑÐ°
BPSK modulation
doppler effect
doppler shift
spectral spreading
phase shift
clock and carrier synchronisation
costas loop

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description: Object of study is reception from small spacecraft of phase modulated signals in the presence of the Doppler effect The aim is to analyse the influence of Doppler frequency shift of the carrier oscillation on noise immunity of reception of phase modulated signals in the communication system between small spacecraft and ground station. Use open educational resources and information search and analysis programmes. Use MATLAB automation (automated) development tools.Â  This paper is devoted to the study of reception of phase-modulated signals with Doppler effect from small low-orbiting spacecraft with defined parameters. The Doppler shift values for small satellites with defined parameters are calculated and simulated, and their communication operation and the time period of normal signal reception during operation are analysed. Spectral spreading due to the Doppler effect and the Doppler spreading power spectrum are demonstrated. The signal reception accuracy of BPSK signals at different Doppler shift values and different transmission speeds is calculated and modelled. It is also proposed to use PLL for clock synchronization and Costas loop for phase synchronization to achieve the synchronization of the received signals and hence the accurate reception of signals with Doppler effect. â Terminological peculiarities of the subject area are taken into account and software tools for solving problems are applied. Specialised software and mathematical software is MATLAB.