Comparative analysis of online static GNSS postprocessing services

M Jamieson, DT Gillins - Journal of surveying engineering, 2018 - ascelibrary.org
Several precise point positioning or relative positioning services are available online for
postprocessing static global navigation satellite system (GNSS) data collected on a single …

Suitability of structure from motion for rock‐slope assessment

MS O'banion, MJ Olsen, C Rault… - The …, 2018 - Wiley Online Library
This study examines three sites in Alaska with unstable rock slopes that were surveyed
using both terrestrial laser scanning (TLS) and structure‐from‐motion (SfM) techniques. The …

Tale of two RTNs: Rigorous evaluation of real-time network GNSS observations

M Allahyari, MJ Olsen, DT Gillins… - Journal of Surveying …, 2018 - ascelibrary.org
Real-time networks (RTNs) have become popular for global navigation satellite system
(GNSS) surveys because highly accurate positions can be derived in seconds to a few …

Evaluation of the online positioning user service for processing static GPS surveys: OPUS-Projects, OPUS-S, OPUS-Net, and OPUS-RS

DT Gillins, D Kerr, B Weaver - Journal of Surveying Engineering, 2019 - ascelibrary.org
Abstract The National Geodetic Survey has developed four versions of the online positioning
user service (OPUS) for postprocessing dual-frequency, static global positioning system …

Kinematic precise point positioning heights enhancement using static measurements and Voronoi's corrector surface

A Al Shouny, A Kamel, Y Miky - International Journal of Digital Earth, 2024 - Taylor & Francis
Recently, the use of Precise Point Positioning (PPP) has spread widely. Unlike Relative
Positioning techniques, PPP uses only a single receiver unit. Although it provides sub …

Adaptive Robust Least-Squares Smoothing Algorithm

X Lin, X Liang, W Li, C Chen, L Cheng… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
The Kalman smoothing algorithm is widely used in offline data processing in global
navigation satellites system (GNSS) to improve filter calculation accuracy. When there are …

An adaptive approach to optimise regional geoid undulation model for engineering applications

CJ Huang, JY Han - Survey Review, 2023 - Taylor & Francis
Geoid undulation model is typically used for the conversion between GNSS obtained
ellipsoidal heights and their orthometric counterparts. In this study, an adaptive approach for …

以自適應法優化大地起伏模型於工程上之應用

黃春嘉 - 2022 - tdr.lib.ntu.edu.tw
由於測量, 建設, 製圖等方面的需求不斷增加, 並隨著城市的快速發展, 目前空間資訊的趨勢已從
早期的二維資訊轉變為三維資訊. 如何確定高程基準是相當重要的一項議題. 在現代測量中 …

[PDF][PDF] Implementation of alternative algorithms for defining the transformation parameters of USK-2000 and coordinate systems of general layout during the marking …

KO Burak, BO Lysko - Archives of Institute of Civil Engineering …, 2018 - scholar.archive.org
The purpose of the research is designing and analyzing the algorithm of coordinates
transformation from the general layout coordinate system in USK-2000 and conversely …

Determining locations of corners of building structures in real time using harmonisation of various surveying methods–case study

R Krzyżek - Survey Review, 2021 - Taylor & Francis
Determination of Cartesian coordinates of building can be performed using various
surveying methods. One of these methods is real-time measurement in RTN GNSS mode …