Intercomparison of multi‑GNSS signals characteristics acquired by a low‑cost receiver connected to various low‑cost antennas

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025615%3A_____%2F24%3AN0000002" target="_blank" >RIV/00025615:_____/24:N0000002 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26110/24:PU151086

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10291-024-01628-4" target="_blank" >https://link.springer.com/article/10.1007/s10291-024-01628-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10291-024-01628-4" target="_blank" >10.1007/s10291-024-01628-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Intercomparison of multi‑GNSS signals characteristics acquired by a low‑cost receiver connected to various low‑cost antennas

Popis výsledku v původním jazyce

With the increasing number of low-cost GNSS antennas available on the market, there is a lack of comprehensive analysis and intercomparison of their performance. Moreover, multi-GNSS observation noises are not well recognized for low-cost receivers. This study characterizes the quality of GNSS signals acquired by low-cost GNSS receivers equipped with eight types of antennas in terms of signal acquisition, multipath error and receiver noise. The diferences between various types of low-cost antennas are non-negligible, with helical antennas underperforming in every respect. Compared with a geodeticgrade station, GPS and Galileo signals acquired by low-cost receivers are typically weaker by 3–9 dB-Hz. While the L1, E1 and E5b signals are well-tracked, only 72% and 86% of L2 signals are acquired for GPS and GLONASS, respectively. The signal noise for pseudoranges varies from 0.12 m for Galileo E5b to over 0.30 m for GLONASS L1 and L2, whereas for carrier-phase observations it oscillates around 1 mm for both GPS and Galileo frequencies, but exceeds 3 mm for both GLONASS frequencies. Antenna phase center ofsets (PCOs) vary signifcantly between frequencies and constellations, and do not agree between two antennas of the same type by up to 25 mm in the vertical component. After a feld calibration a of low-cost antenna and consistent application of PCOs, the horizontal and vertical accuracy is improved to a few millimeter and a few centimeter level for the multi-GNSS processing with double-diferenced and undiferenced approach, respectively. Last but not least, we demonstrate that PPP-AR is possible also with low-cost GNSS receivers and antennas, and improves the precision and convergence time. The results prove that selection of low-cost antenna for a low-cost GNSS receiver is of great importance in precise positioning applications.

Název v anglickém jazyce

Intercomparison of multi‑GNSS signals characteristics acquired by a low‑cost receiver connected to various low‑cost antennas

Popis výsledku anglicky

With the increasing number of low-cost GNSS antennas available on the market, there is a lack of comprehensive analysis and intercomparison of their performance. Moreover, multi-GNSS observation noises are not well recognized for low-cost receivers. This study characterizes the quality of GNSS signals acquired by low-cost GNSS receivers equipped with eight types of antennas in terms of signal acquisition, multipath error and receiver noise. The diferences between various types of low-cost antennas are non-negligible, with helical antennas underperforming in every respect. Compared with a geodeticgrade station, GPS and Galileo signals acquired by low-cost receivers are typically weaker by 3–9 dB-Hz. While the L1, E1 and E5b signals are well-tracked, only 72% and 86% of L2 signals are acquired for GPS and GLONASS, respectively. The signal noise for pseudoranges varies from 0.12 m for Galileo E5b to over 0.30 m for GLONASS L1 and L2, whereas for carrier-phase observations it oscillates around 1 mm for both GPS and Galileo frequencies, but exceeds 3 mm for both GLONASS frequencies. Antenna phase center ofsets (PCOs) vary signifcantly between frequencies and constellations, and do not agree between two antennas of the same type by up to 25 mm in the vertical component. After a feld calibration a of low-cost antenna and consistent application of PCOs, the horizontal and vertical accuracy is improved to a few millimeter and a few centimeter level for the multi-GNSS processing with double-diferenced and undiferenced approach, respectively. Last but not least, we demonstrate that PPP-AR is possible also with low-cost GNSS receivers and antennas, and improves the precision and convergence time. The results prove that selection of low-cost antenna for a low-cost GNSS receiver is of great importance in precise positioning applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

GPS Solutions

ISSN

1080-5370

e-ISSN

1521-1886

Svazek periodika

28

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

Artickle number. 97

Kód UT WoS článku

001177572100001

EID výsledku v databázi Scopus

2-s2.0-85189788447