The research of the dependence of the tracking loops performance accuracy in GNSS signal receivers on the choice of the discriminator
| Jazyk: | ruština |
|---|---|
| Rok vydání: | 2021 |
| Předmět: | |
| DOI: | 10.18720/spbpu/3/2021/vr/vr21-2462 |
| Popis: | Тема вÑпÑÑкной квалиÑикаÑионной ÑабоÑÑ: «ÐÑÑледование завиÑимоÑÑи ÑоÑноÑÑи ÑабоÑÑ Ð¿ÐµÑÐµÐ»Ñ ÑÐ»ÐµÐ¶ÐµÐ½Ð¸Ñ Ð·Ð° ÑÐ¸Ð½Ñ ÑонизаÑией в пÑиÑÐ¼Ð½Ð¸ÐºÐ°Ñ Ñигналов ÐÐСС Ð¾Ñ Ð²ÑбоÑа диÑкÑиминаÑоÑа». ÐÐ°Ð½Ð½Ð°Ñ ÑабоÑа поÑвÑÑена оÑенке ÑоÑноÑÑи ÑÑнкÑиониÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑиÑÑем ÑÐ»ÐµÐ¶ÐµÐ½Ð¸Ñ Ð·Ð° задеÑжкой огибаÑÑей и ÑиÑÑем ÑÐ»ÐµÐ¶ÐµÐ½Ð¸Ñ Ð·Ð° неÑÑÑей в пÑÐ¸ÐµÐ¼Ð½Ð¸ÐºÐ°Ñ Ñигналов ÐÐСС в завиÑимоÑÑи Ð¾Ñ Ð²ÑбоÑа диÑкÑиминаÑоÑов ÑиÑÑем ÑлежениÑ. ЦелÑÑ ÑабоÑÑ ÑвлÑеÑÑÑ Ñнижение вÑÑиÑлиÑелÑной ÑложноÑÑи ÑабоÑÑ Ð¿ÐµÑÐµÐ»Ñ ÑлежениÑ, в ÑаÑÑноÑÑи ÑабоÑÑ Ð´Ð¸ÑкÑиминаÑоÑов, пÑÑем вÑбоÑа менее вÑÑиÑлиÑелÑно Ñложного алгоÑиÑма диÑкÑиминаÑоÑа. Ð ÑабоÑе иÑполÑзÑеÑÑÑ Ð¸Ð¼Ð¸ÑаÑÐ¾Ñ ÑабоÑÑ ÐºÐ¾ÑÑелÑÑоÑа в пÑÐ¸ÐµÐ¼Ð½Ð¸ÐºÐ°Ñ Ñигналов ÐÐСС, Ñ ÐµÐ³Ð¾ помоÑÑÑ Ð¾ÑÑÑеÑÑвлен анализ ÑабоÑÑ ÑиÑÑем ÑÐ»ÐµÐ¶ÐµÐ½Ð¸Ñ Ð¿Ñи вклÑÑении ÑазлиÑнÑÑ Ð´Ð¸ÑкÑиминаÑоÑов и пÑи ÑазнÑÑ Ð²Ð¸Ð´Ð°Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ¸ пÑиемника (Ñ Ð¾Ð´Ñба, бег, Ñазгон велоÑипеда и ÑоÑможение авÑомобилÑ) и опÑÐµÐ´ÐµÐ»ÐµÐ½Ñ ÐºÑиÑеÑии ÑÑавнениÑ. ÐÑоведено имиÑаÑионное моделиÑование и поÑÑÑÐ¾ÐµÐ½Ñ Ð³ÑаÑики завиÑимоÑÑи знаÑений кÑиÑеÑиев оÑенки Ð¾Ñ Ð¾ÑноÑÐµÐ½Ð¸Ñ Ñигнал/ÑÑм. ÐÑоведено оÑеноÑное ÑÑавнение оÑибок ÑоÑноÑÑи ÑÐ¸Ð½Ñ ÑонизаÑии и ÑÐ´ÐµÐ»Ð°Ð½Ñ Ð²ÑÐ²Ð¾Ð´Ñ Ð¾ возможноÑÑи ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð²ÑÑиÑлиÑелÑной ÑложноÑÑи ÑабоÑÑ Ð´Ð¸ÑкÑиминаÑоÑов. The subject of the graduate qualification work is âThe research of the dependence of the tracking loops performance accuracy in GNSS signal receivers on the choice of the discriminatorâ. The given work is devoted to the evaluation of code and carrier tracking loops performance depending on the choice of delay lock loop, frequency lock loop and phase lock loop discriminator. The purpose of the work is to reduce computational load of GPS tracking systems (discriminators in particular) by choosing discriminator algorithms with a least computational load. In this work the correlator imitator model has been used, with this model tracking loops performance have been analyzed using different discriminators and different receiver dynamics (walk, run, bicycle acceleration and car brake) as well as estimation metrics have been defined. Simulation is carried out and these estimation parameters versus the signal-to-noise ratio graphs are constructed. A comparison of performance errors was made and conclusions about the possibility of reducing the discriminators computational complexity are presented. |
| Databáze: | OpenAIRE |
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