The component that generates the frequency of the radio waves transmitted by a radar is generally built around a quartz crystal oscillator. When this component is exposed to mechanical vibrations, such as acceleration or rotation in different directions, phase noise occurs. That is due to the piezoelectric effect of quartz crystals, which eventually degrades the performance of a radar. High frequency noise are compensated for using mechanical dampers. However, the low frequency noise remains and requires a digital solution. To solve this, a theoretical compensation model for the quartz crystal has been designed. It was possible to measure the noise generated by the quartz crystal by utilising an accelerometer, perform simulations and calculations. With the help of these different tools, it was possible to theoretically calculate and reduce the phase noise by 30-40%. All the results that has been obtained are theoretical results and nothing has yet been implemented in any radar system.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-387826 |
| Date | January 2019 |
| Creators | Mahmud, Akib |
| Publisher | Uppsala universitet, Institutionen för teknikvetenskaper |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | UPTEC E, 1654-7616 ; 19 010 |
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