Feasibility of Using Low-Cost Dual-Frequency GNSS Receivers for Land Surveying

Wielgocka, Natalia; Hadaś, Tomasz; Kaczmarek, Adrian; Marut, Grzegorz

doi:10.3390/s21061956

Cited by 35 publications

(25 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Wielgocka et al [ 23 ] tested the ZED-F9P receiver for positioning accuracy using different methods. In static mode, they obtained RMSE (root mean square error) values of 11, 17 and 15 mm for north, east and up components, respectively, based on differences from reference data.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Low-Cost GNSS Receiver under Demanding Conditions in RTK Network Mode

Janos

Kuraś

2021

Sensors

View full text Add to dashboard Cite

Positioning with low-cost GNSS (Global Navigation Satellite System) receivers is becoming increasingly popular in many engineering applications. In particular, dual-frequency receivers, which receive signals of all available satellite systems, offer great possibilities. The main objective of this research was to evaluate the accuracy of a position determination using low-cost receivers in different terrain conditions. The u-blox ZED-F9P receiver was used for testing, with the satellite signal supplied by both a dedicated u-blox ANN-MB-00 low-cost patch antenna and the Leica AS10 high-precision geodetic one. A professional Leica GS18T geodetic receiver was used to acquire reference satellite data. In addition, on the prepared test base, observations were made using the Leica MS50 precise total station, which provided higher accuracy and stability of measurement than satellite positioning. As a result, it was concluded that the ZED-F9P receiver equipped with a patch antenna is only suitable for precision measurements in conditions with high availability of open sky. However, the configuration of this receiver with a geodetic-grade antenna significantly improves the quality of results, beating even professional geodetic equipment. In most cases of the partially obscured horizon, a high precision positioning was obtained, making the ZED-F9P a valuable alternative to the high-end geodetic receivers in many applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of Low-Cost GNSS Receiver under Demanding Conditions in RTK Network Mode

Janos

Kuraś

2021

Sensors

View full text Add to dashboard Cite

show abstract

“…Position accuracy from manufacture is confirmed by testing this module [10]. Some studies also confirmed this claim in open space without multipath [11] [12].…”

Section: Methodsmentioning

confidence: 71%

Free Station Task With Drone

Zahradník¹

2021

CEJ

View full text Add to dashboard Cite

Using drones with different purposes than only taking photos is nowadays the main direction of drone development. Drones are made for package delivery, people transport, etc. Drone equipped by GNSS RTK and prism can be used as orientation point for the free station. The idea is using drone to get coordinates of total stations inappropriate for GNSS. such as high buildings and forest. The drone can fly above the obstacle causing inappropriate, so the GNSS will compute the position coordinates correctly. Total station will measure distance and angles on prism to get free station coordinates. This article deals with the accuracy of using two points in the free station task. Accuracy of measurement and data is based on real values. Drone can be used as the target if it is not windy, the position accuracy of the target on drone is 5 cm. Wind has no effect on the vertical position accuracy of the the drone. The results show that the same principles and limitations must be observed when measuring the free station task. Horizontal angle between orientation points must be bigger than 100 gon and the zenith angle must be at least 50 gon. The distance between orientation and free station must longer than consequent measured points.

show abstract

“…RTK receivers calculate the absolute position of the phase centre of a GNSS antenna, like GNSS receivers, determining the position point anywhere on Earth’s surface by estimating the pseudoranges from individual satellites moving in orbit [ 33 ]. As described in other papers [ 6 , 34 , 35 ], RTK uses observations to improve its positioning accuracy, which is doubly differentiated by a common pseudorange estimate and a correction signal. The correction signal is usually received from a stationary RTK receiver, called a “base station”.…”

Section: Methodsmentioning

confidence: 99%

“…The study focused only on the marginal deviations (minimum and maximum) in three directions. The work of the authors of reference [ 35 ] focused on a detailed investigation of the dependence of the carrier-to-noise ratio (C/N 0 ) on the satellite elevation angle, base station baseline and frequency. One low-cost multifrequency RTK receiver u-blox ZED-F9P was used for verification, and it was confirmed that, even in static measurements, this receiver showed SSR ranging from 43.3% to 97.9%.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Four RTK Receivers Operating in the Static and Dynamic Modes Using Measurement Robotic Arm

Kadeřábek

Shapoval

Matějka

et al. 2021

Sensors

View full text Add to dashboard Cite

While the existing research provides a wealth of information about the static properties of RTK receivers, less is known about their dynamic properties, although it is clear that the vast majority of field operations take place when the machine is moving. A new method using a MRA for the evaluation of RTK receivers in movement with a precise circular reference trajectory (r = 3 m) was proposed. This reference method was developed with the greatest possible emphasis on the positional, time and repeatable accuracy of ground truth. Four phases of the measurement scenario (static, acceleration, uniform movement and deceleration) were used in order to compare four different types of RTK receiver horizontal operation accuracy over three measurement days. The worst result of one of the receivers was measured at SSR = 13.767% in dynamic movement. Since the same “low-cost” receiver without an INS unit had SSR = 98.14% in previous static measurements, so it can be assumed that the motion had a very significant effect on the dynamic properties of this receiver. On the other hand, the best “high-end” receiver with an INS unit had SSR = 96.938% during the dynamic testing scenarios. The median values of the deviations were always better during uniform movements than during acceleration or braking. In general, the positioning accuracy was worse in the dynamic mode than in the static one for all the receivers. Error indicators (RMSerr and Me) were found several times higher in the dynamic mode than in the static one. These facts should be considered in the future development of modern agricultural machinery and technology.

show abstract

Feasibility of Using Low-Cost Dual-Frequency GNSS Receivers for Land Surveying

Cited by 35 publications

References 30 publications

Evaluation of Low-Cost GNSS Receiver under Demanding Conditions in RTK Network Mode

Evaluation of Low-Cost GNSS Receiver under Demanding Conditions in RTK Network Mode

Free Station Task With Drone

Comparison of Four RTK Receivers Operating in the Static and Dynamic Modes Using Measurement Robotic Arm

Contact Info

Product

Resources

About