Start Acceleration of the Space GPS Receiver
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F20%3A00349258" target="_blank" >RIV/68407700:21230/20:00349258 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.24425/ijet.2020.134036" target="_blank" >https://doi.org/10.24425/ijet.2020.134036</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.24425/ijet.2020.134036" target="_blank" >10.24425/ijet.2020.134036</a>
Alternative languages
Result language
angličtina
Original language name
Start Acceleration of the Space GPS Receiver
Original language description
The cold start of the space GPS receiver, i.e. the start without any information about the receiver position, satellite constellation, and time, is complicated by a large Doppler shift of a navigation signal caused by the satellite movement on the Earth orbit. That increases about five times the search space of the navigation signals compared to the standard GPS receiver. The paper investigates a method of the acceleration of the GPS receiver cold start time designed for the pico- and femto-satellites. The proposed method is based on a combination of the parallel search in Doppler frequency and PRN codes and the serial search in code phase delay. It can shorten the cold start time of the GPS receiver operating on LEO orbit from about 300 to 60 seconds while keeping the simplicity of FPGA signal processor and low power consumption. The developed algorithm was successfully implemented and tested in the piNAV GPS receiver. The energy required for the obtaining of the position fix was reduced five times from 36 on to 7.7 Joules. This improvement enables applications of such receiver for the position determination in smaller satellites like Pocket Cube or femto-satellites with a lower energy budget than the Cube Satellite.
Czech name
—
Czech description
—
Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/EF15_003%2F0000481" target="_blank" >EF15_003/0000481: Research Center of Cosmic Rays and Radiation Events in the Atmosphere</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Electronics and Telecommunications
ISSN
2081-8491
e-ISSN
2300-1933
Volume of the periodical
66
Issue of the periodical within the volume
4
Country of publishing house
PL - POLAND
Number of pages
8
Pages from-to
745-752
UT code for WoS article
000612733900020
EID of the result in the Scopus database
2-s2.0-85097614935