Kinematic precise point positioning using GPS and GLONASS measurements in marine environments

Alkan, Reha Metin; Saka, M. H.; Ozulu, I. Murat; İlçi, Veli

doi:10.1016/j.measurement.2017.05.054

Cited by 32 publications

(11 citation statements)

References 12 publications

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“…After this period, notably better results were achieved. Note that, this is not the case for the post-processing CSRS-PPP service because it uses the forward and backward processing strategy when the kinematic option is selected (Alkan et al 2017). According to this study, the results show that, it is possible to make positioning with the Trimble CenterPoint RTX service with a difference of 5.5 cm or better (with an error of ± 3.7 cm RMS) for 2D position whilst within 8.7 cm or better (with an error of ± 4.1 cm RMS) for height component after convergence time.…”

Section: Case Studymentioning

confidence: 99%

Accuracy comparison of post-processed PPP and real-time absolute positioning techniques

Alkan

Erol

Ozulu

et al. 2020

Geomatics, Natural Hazards and Risk

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The main motivation of this study is to assess the accuracy performance of the real-time global GNSS PPP positioning service, i.e. Trimble CenterPoint RTX, and online PPP post-processing service, i.e. CSRS-PPP, in Çorum Province of Turkey. Within this scope, a geodetic point was established and GNSS data were logged in static mode at a measurement interval of 1 Hz. At the same time, the real-time coordinates of each measurement epoch were determined with the Trimble CenterPoint RTX positioning service using L-band geostationary satellite delivery. The collected GNSS data were also sent to the CSRS-PPP service and the coordinates of each measurement epoch were calculated. According to comparison of the coordinates obtained from CenterPoint RTX to the known coordinates, it was concluded that the 3D real-time positioning achieved at centimeter-level of accuracy within convergence time of a few minutes. On the other hand, CSRS-PPP also provided centimeter-level accurate positioning with post-processing mode. The overall results show that, the attainable accuracy with both approaches provided the requirements of the many scientific and practical surveying applications.

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Section: Case Studymentioning

confidence: 99%

Accuracy comparison of post-processed PPP and real-time absolute positioning techniques

Alkan

Erol

Ozulu

et al. 2020

Geomatics, Natural Hazards and Risk

Self Cite

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“…[22]. For navigation, the Global Positioning System (GPS), Glogal´naya Navigatsionnaya Sputnikovaya Systema (GLONASS) [23], or new high-accuracy systems such as Precise Point Positioning (PPP) [24] in a Global Navigation System (GNSS) integration are employed [25]. Telecommunications underwater are more complex and complicated because electromagnetic signals are highly attenuated and therefore have a low transmission range [26].…”

Section: Introductionmentioning

confidence: 99%

Use of UIoT for Offshore Surveys Through Autonomous Vehicles

Sánchez

Márquez

Govindara

et al. 2021

Polish Maritime Research

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The ENDURUNS project is a European Research project of the Horizon 2020 framework, which has as its main objective to achieve the optimum and intelligent use of green hydrogen energy for long-term ocean surveys. The ENDURUNS system comprises an Unmanned Surface Vehicle (USV) and an Autonomous Underwater Vehicle (AUV) with gliding capability. The power pack of the USV integrates Li-ion batteries with photovoltaic panels, whilst the AUV employs Li-ion batteries and a hydrogen fuel cell. It is essential to develop a continuous monitoring ca-pability for the different systems of the vehicles. Data transmission between the devices onboard presents challenges due to the volume and structure of the different datasets. A telecommunications network has been designed to manage the operational components considered in the project. The autonomous vehicles perform measurements, providing their position and other data wirelessly. The system will generate a great volume of various signals during the survey. The Remote Control Centre needs to be interfaced with the vehicles in order to receive, manage and store the acquired data. An Underwater Internet of Things (IoT) platform is designed to establish efficient and smart data management. This study presents an exhaustive survey to analyse the telecommunication systems employed in the autonomous vehicles, including the back-end, user interface and mobile units. This paper presents the novel design of the hardware and software structure of the ENDURUNS project with regard to the literature, where its components and their in-terconnection layers are detailed, which is a novel scientific and technological approach for autonomous seabed surveying in deep oceans or in coastal areas.

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“…In this method, position can be determined by using a single GNSS receiver. Many studies have been carried out on the performance of the Post Process PPP method [3,4,5,6,7,8]. With static and kinematic PPP, a position accuracy of cm-dm level can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Comparison of RT-PPP and RT-PPP-AR Methods

Alçay¹,

Atiz²,

Öğütçü³

2020

acperpro

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The Precise Point Positioning (PPP) is an absolute positioning method which emerged as an alternative to the relative positioning method. This method is widely used in many applications in recent years. In this method the static and kinematic positioning can be performed with high accuracy by using single GNSS receiver. In the last few years, the PPP method has started to be used in real time (RT-PPP) thanks to the real-time precise products (satellite orbit and clock data) produced by different organizations like IGS, BKG, CNES, ESA, EUREF, GFZ etc. The high interest in RT-PPP has accelerated the development of this method and many software have been developed. Recently, some of the software have ability to apply integer ambiguity resolution (AR). For this purpose, in this study the positioning performance of RT-PPP method was tested using two options of PPP-WIZARD software (RT-PPP, RT-PPP-AR). Three IGS stations were chosen in different geographical regions. The real-time coordinates of the stations belong to the observation period of about 4 hours were derived simultaneously with the RT-PPP and RT-PPP-AR options in 1 second epoch interval. The results obtained are given in a comparative approach.

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Kinematic precise point positioning using GPS and GLONASS measurements in marine environments

Cited by 32 publications

References 12 publications

Accuracy comparison of post-processed PPP and real-time absolute positioning techniques

Accuracy comparison of post-processed PPP and real-time absolute positioning techniques

Use of UIoT for Offshore Surveys Through Autonomous Vehicles

Comparison of RT-PPP and RT-PPP-AR Methods

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