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9 Results Found

  • Article
  • Open Access
4 Citations
2,461 Views
22 Pages
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Fast and Reliable Network RTK Positioning Based on Multi-Frequency Sequential Ambiguity Resolution under Significant Atmospheric Biases

  • Hao Liu,
  • Ziteng Zhang,
  • Chuanzhen Sheng,
  • Baoguo Yu,
  • Wang Gao and
  • Xiaolin Meng
Remote Sens.2024, 16(13), 2320;https://doi.org/10.3390/rs16132320

25 June 2024

The positioning performance of the Global Navigation Satellite System (GNSS) network real-time kinematic (NRTK) depends on regional atmospheric error modeling. Under normal atmospheric conditions, NRTK positioning provides high accuracy and rapid ini...

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  • Article
  • Open Access
3 Citations
3,219 Views
16 Pages
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Sequential Ambiguity Resolution Method for Poorly-Observed GNSS Data

  • Haiyang Li,
  • Guigen Nie,
  • Shuguang Wu and
  • Yuefan He
Remote Sens.2021, 13(11), 2106;https://doi.org/10.3390/rs13112106

27 May 2021

Integer ambiguity resolution is required to obtain precise coordinates for the global navigation satellite system (GNSS). Poorly observed data cause unfixed integer ambiguity and reduce the coordinate accuracy. Previous studies mostly used denoise fi...

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  • Article
  • Open Access
2 Citations
3,325 Views
16 Pages
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Pass-by-Pass Ambiguity Resolution in Single GPS Receiver PPP Using Observations for Two Sequential Days: An Exploratory Study

  • Ruijie Xi,
  • Qusen Chen,
  • Xiaolin Meng,
  • Panos Psimoulis,
  • Weiping Jiang and
  • Caijun Xu
Remote Sens.2021, 13(18), 3728;https://doi.org/10.3390/rs13183728

17 September 2021

“Pass-by-pass” or “track-to-track” ambiguity resolution removes Global Navigation Satellite System (GNSS) satellite hardware delays between adjacent undifferenced (UD) ambiguities, which is often applied in precise orbit determination (POD) for Low E...

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  • Article
  • Open Access
24 Citations
5,401 Views
15 Pages
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Real-Time GNSS-Based Attitude Determination in the Measurement Domain

  • Lin Zhao,
  • Na Li,
  • Liang Li,
  • Yi Zhang and
  • Chun Cheng
Sensors2017, 17(2), 296;https://doi.org/10.3390/s17020296

5 February 2017

A multi-antenna-based GNSS receiver is capable of providing high-precision and drift-free attitude solution. Carrier phase measurements need be utilized to achieve high-precision attitude. The traditional attitude determination methods in the measure...

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  • Article
  • Open Access
4 Citations
3,292 Views
19 Pages
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A Comparative Study of BDS Triple-Frequency Ambiguity Fixing Approaches for RTK Positioning

  • Huizhong Zhu,
  • Yangyang Lu,
  • Longjiang Tang,
  • Jun Li,
  • Aigong Xu and
  • Maorong Ge
Sensors2021, 21(7), 2565;https://doi.org/10.3390/s21072565

6 April 2021

Concerning the triple-frequency ambiguity resolution, in principle there are three different realizations. The first one is to fix all the ambiguities of the original frequencies together. However, it is also believed that fixing the combined integer...

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  • Article
  • Open Access
7 Citations
4,864 Views
19 Pages
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GNSS Precise Relative Positioning Using A Priori Relative Position in a GNSS Harsh Environment

  • Euiho Kim
Sensors2021, 21(4), 1355;https://doi.org/10.3390/s21041355

14 February 2021

To enable Global Navigation Satellite System (GNSS)-based precise relative positioning, real-time kinematic (RTK) systems have been widely used. However, an RTK system often suffers from a wrong integer ambiguity fix in the GNSS carrier phase measure...

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  • Article
  • Open Access
18 Citations
4,360 Views
23 Pages
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Integrity Monitoring for Horizontal RTK Positioning: New Weighting Model and Overbounding CDF in Open-Sky and Suburban Scenarios

  • Kan Wang,
  • Ahmed El-Mowafy,
  • Chris Rizos and
  • Jinling Wang
Remote Sens.2020, 12(7), 1173;https://doi.org/10.3390/rs12071173

6 April 2020

Integrity monitoring is an essential task for ensuring the safety of positioning services. Under a selected probability of hazardous misleading information, the protection levels (PLs) are computed according to a considered threat model to bound the...

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  • Article
  • Open Access
1 Citations
2,362 Views
19 Pages
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Sequential Generation of Multi-GNSS Multi-Frequency PPP-RTK Products and Their Performance Using the EUREF Permanent GNSS Network

  • Hans Daniel Platz
Remote Sens.2023, 15(11), 2792;https://doi.org/10.3390/rs15112792

27 May 2023

In the classic Precise Point Positioning (PPP) approach, observations of Global Navigation Satellite Systems (GNSS) are processed at the network level to generate satellite clocks and positions. This information can be used to enable accurate point p...

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  • Article
  • Open Access
753 Views
22 Pages
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Partial Ambiguity Resolution Strategy for Single-Frequency GNSS RTK/INS Tightly Coupled Integration in Urban Environments

  • Dashuai Chai,
  • Xiqi Wang,
  • Yipeng Ning and
  • Wengang Sang
Electronics2025, 14(13), 2712;https://doi.org/10.3390/electronics14132712

4 July 2025

Single-frequency global navigation satellite system/inertial navigation system (GNSS/INS) integration has wide application prospects in urban environments; however, correct integer ambiguity is the major challenge because of GNSS-blocked environments...

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