Low-Cost GNSS Software Receiver Performance Assessment

Cutugno, Matteo; Robustelli, Umberto; Pugliano, Giovanni

doi:10.3390/geosciences10020079

Cited by 14 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But, due to certain budget limit, surveyor may choose low-cost equipment. Based on previous research, it tested one type low-cost GNSS receivers' performance and concludes that low cost receiver can provide good performance as the survey grade receiver, and that their practical application was feasible and reliable [1] [2] [14] and [15]. Since this study is conducted in Malaysia, the brands that is used regularly in survey work or for education purposes are Trimble, Topcon, CHCNAV, Leica, South and others.…”

Section: Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Quality Assessment of Various CHC NAV GNSS Receiver Models

2023

IJG

View full text Add to dashboard Cite

GNSS is utilized in numerous industries and applications to determine a location's (position and time). GNSS technology was quickly used for surveying because it can offer correct latitude, longitude, and height without establishing angles and distances. It's utilized worldwide in mapping and surveying. An ideal GNSS receiver for geodetic and other surveying applications must receive and monitor both code pseudo ranges and carrier phase signals, including the Y-codeless signal. Using geodetic equipment can offer the most accurate location data, but it depends on the instrument's quality. Choosing the proper equipment ensures trustworthy location data. Surveyors may pick cheap equipment caused by financial constraints. Does the data from different GNSS receiver brands have the same quality? By performing static observation on various GNSS receiver from CHC (i90, i83, i80, i73 and i70) key parameters are extracted from the data for data integrity assessment in terms of multipath, cycle slip, signal noise ratio, sky plot and others. CHC Geomatics Office 2 was used to extract the mentioned parameters for quality assessment. The two-day observation lasted from April 23 to April 25, 2022. (GPST). Data availability and data completeness are closely related criteria. For full potential analysis, receivers must be fully operating. No receiver has 100% data completeness or 24-hour data availability. Each receiver's data demonstrates that error varies by parameter. CHC i70 has the least multipath effect and CHC i80 the greatest. Overall, MP1 and MP2 multipath effects were below 0.5. CHC i70 had the lowest cycle slip ratio as it recorded the strongest signal strength while the greatest cycle slip ratio occurred to CHC i80. Each receiver's sky map exhibits the same pattern for both observation days, indicating they tracked the same satellite. Lastly, the average coordinates acquired either on various days or among the receivers indicates a maximum of 0.28m in vector displacement where it is appropriate to claim that each receiver received different coordinates since they were not locating on one place but adjacent within 1 meter radius. From the data analyzed, it is concluded that CHC i83 has best data quality among CHC models while CHC i80 obtained the worst data quality, but this does not indicate that model cannot provide good quality data.

show abstract

Section: Problem Statementmentioning

confidence: 99%

“…The quality checking can be done by using free software or commercial such as Spider QC, RTKLIB, CHC Geomatics Office 2, Anubis, etc. [10] and [14].…”

Section: Problem Statementmentioning

confidence: 99%

Quality Assessment of Various CHC NAV GNSS Receiver Models

2023

IJG

View full text Add to dashboard Cite

show abstract

“…Moreover, many devices lately are compatible with the European GNSS system, Galileo, which is currently (March 2020) in its full operational capability (FOC) phase: 22 FOC satellites were launched up to the end of 2019, in addition to the four IOVs launched between 2011 and 2012. However, of these 26 satellites only 19 FOCs and three IOVs are declared usable, as the other four had problems during their life in orbit [40][41][42][43][44][45][46]. The Galileo navigation signals are transmitted in the four frequency bands, depicted in Figure 3 below.…”

Section: Rtk(real-time Kinematic)-gnss(global Navigation Satellite Symentioning

confidence: 99%

Variable Dampers to Mitigate Structural Demand to Wind Turbines: The Role of the Monitoring System Features for the Effectiveness of the Control Strategy

et al. 2020

Self Cite

View full text Add to dashboard Cite

In the last decade, some researchers and professionals have been engaged in the study of methods and techniques that can build high wind turbines while containing construction costs within the limits of economic convenience. Among the most promising solutions is that of using innovative devices to mitigate the structural demand for the towers. The reduction in the stress demand in the foundation makes the strategy particularly interesting for the repowering of existing plants, where it is convenient not to demolish and rebuild the foundation, but rather to reuse the existing one for the new plant. A semi-active vibration control strategy, based on the adoption of controllable dissipative devices, is presented herein. The proposed technique requires the tower to be equipped with a measurement system suitable for the real time monitoring of structural response. Performing reliable high-frequency measurements of the horizontal displacement of points located at heights of tens of meters is not simple. With the purpose of assessing the efficiency and feasibility of Global Navigation Satellite System (GNSS)-based systems for the control of wind turbine structures, the proposed paper tries to investigate the characteristics and data processing techniques that are able to make the GNSS useful for such applications. Several numerical simulations were carried out with reference to a case-study wind turbine to quantitatively assess how the performance of the control system changes as the features of the monitoring system worsen, and finally to draw conclusions and suggestions for the minimum performance that monitoring devices must have for an effective reduction in structural demand.

show abstract

“…GPS plays a critical role in economic, infrastructure, social development, national defense, and security [1], providing continuous positioning and timing services for various applications, including civilian and military use. To ensure successful navigation and positioning, the acquisition and tracking modules are essential for software receivers, requiring a rough estimation of carrier frequency and code phase [2].…”

Section: Introductionmentioning

confidence: 99%

Optimal GPS Acquisition Algorithm in Severe Ionospheric Scintillation Scene

et al. 2023

View full text Add to dashboard Cite

The Global Positioning System (GPS) plays an important role in navigation and positioning services. When GPS signals propagate through a complex space environment, they are susceptible to interference of ionospheric scintillation. As one of the biggest interference sources on GPS navigation and positioning, ionospheric scintillation will lead to signal intensity decline and carrier phase fluctuation, making signal acquisition of the GPS receiver challenging. Thus, an acquisition algorithm based on differential coherent integration combining accumulation correlation and bit sign transition estimation is proposed. The coherent accumulation is applied to reduce computational loads and contribution by the Gaussian white noise in the signal. Moreover, the differential coherence integration is utilized to eliminate data blocks with bit transition, prolonging the coherence integration time and improving the data utilization rate. Experimental results show that under severe ionospheric scintillation condition, weak GPS signals can be acquired successfully after improving the acquisition algorithm, with the acquisition probability reaching 50% when the signal-to-interference ratio (SIR) drops to −34 dB. Comparing to the differential coherence integration, the complexity of the calculation reduces to only 21.75% effectively after the improvement. The execution time is less than half of the differential coherence integral.

show abstract

Low-Cost GNSS Software Receiver Performance Assessment

Cited by 14 publications

References 14 publications

Quality Assessment of Various CHC NAV GNSS Receiver Models

Quality Assessment of Various CHC NAV GNSS Receiver Models

Variable Dampers to Mitigate Structural Demand to Wind Turbines: The Role of the Monitoring System Features for the Effectiveness of the Control Strategy

Optimal GPS Acquisition Algorithm in Severe Ionospheric Scintillation Scene

Contact Info

Product

Resources

About