Browsing by Author "Rolko, Miroslav"

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    Development and performance analysis of the Network Time Protocol Server
    (Tartu Ülikool, 2019) Rolko, Miroslav; Allik, Viljo, supervisor; Sünter, Indrek, supervisor; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Tehnoloogiainstituut
    This Master thesis describes the process of building a simple network time protocol (NTP) server on a single-board computer for the Atomic clock at Tartu Observatory. It explains the terminology of NTP protocol and set up for the NTP server. It also describes how to build a NTP client which generates pulse per second by its own script for the measurement purposes. This new pulse is synchronized with the NTP timestamp. Results of its use are compared against the test results from NTP plotter. The experimental configuration of the NTP server is then evaluated which is followed by a discussion regarding possible improvements and future projects.
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    Universal Antenna Rotator Controller for Satellite Ground Stations
    (Tartu Ülikool, 2016) Rolko, Miroslav; Sünter, Indrek; Allik, Viljo; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Tehnoloogiainstituut
    This dissertation describes the process of designing simple printed circuit board (PCB), assembly of components and creating a firmware for turning motors with direct current. Development of the universal antenna rotator controller consists of four chronological steps in thesis: 1. The first part is focusing on requirements of the new project. 2. The second part is investigating each interface of the circuit and explains its functionality. 3. The third part is dedicated to assembling of the printed circuit board and building of an enclosure. 4. The last part is writing a firmware for the universal rotator controller (URC).