GNSS

Factors Affecting Height Accuracy in Global Navigation Satellite Systems (GNSS)

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By Shahabuddin Amerudin Abstract Global Navigation Satellite Systems (GNSS), with the Global Positioning System (GPS) as the most prominent example, have transformed the field of geospatial positioning, enabling precise location determination for a multitude of applications. While GNSS provides remarkable accuracy in horizontal position measurements, the accuracy of height measurements remains subject to various influencing factors. This article conducts an in-depth and comprehensive review of the factors impacting height accuracy in GNSS measurements, along with […]

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HD GNSS – An Introduction

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By Shahabuddin Amerudin HD GNSS, or High-Definition Global Navigation Satellite System, refers to advanced positioning and navigation technology that enhances the accuracy and precision of satellite-based location services. It is an evolution of traditional GNSS systems like GPS, GLONASS, Galileo, and BeiDou, designed to provide more accurate and reliable positioning information. The concept of improving the accuracy of Global Navigation Satellite Systems (GNSS) has been an ongoing endeavor since the inception of GNSS technology itself.

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Enhancing Smartphone GNSS Accuracy with External Receivers

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By Shahabuddin Amerudin In an era driven by digital navigation and geospatial accuracy, the fusion of smartphones and external GNSS receivers has revolutionized positioning capabilities. With the proliferation of location-based services, achieving sub-meter accuracy with smartphones has become a tantalizing possibility. In this article, we explore how to realize this feat, including a dive into cost-effective external receivers that can elevate your smartphone’s positioning prowess. Smartphone GNSS: The Foundation Modern smartphones are equipped with built-in

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Unleashing Sub-Meter Accuracy with L1 and L5 GNSS Frequencies

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By Shahabuddin Amerudin Introduction In the realm of modern navigation and geospatial technology, achieving unparalleled accuracy has become a driving force. As industries and individuals seek to unlock the potential of location-based services, the fusion of advanced GNSS technology with smartphones and external receivers has become a game-changer. One of the pivotal benchmarks in this quest is the pursuit of sub-meter accuracy – a feat that was once confined to specialized equipment but is now

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GIS Applications That Demand Sub-Meter Accuracy

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By Shahabuddin Amerudin Sub-meter accuracy is essential for a variety of Geographic Information System (GIS) applications that require precise spatial data collection, mapping, and analysis. Here are some GIS applications that benefit from sub-meter accuracy: While sub-meter accuracy is critical for these applications, it’s important to choose the appropriate level of accuracy based on the specific requirements of the project. In many cases, sub-meter accuracy provides a balance between precision and cost-effectiveness, making it a

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Pioneering High-Accuracy GNSS Positioning with Low-Cost Receivers and Smartphones

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By Shahabuddin Amerudin Introduction In the dynamic landscape of navigation and positioning technology, a remarkable breakthrough has emerged: the accessibility of high-accuracy GNSS positioning through low-cost receivers and smartphones (Marchi et al., 2022). As we delve deeper into this realm, we uncover a transformative era of precision that was once reserved for specialized equipment. This article explores the advancements, implications, and the potential for achieving centimeter-level accuracy through these affordable solutions. Empowering Ubiquity The narrative

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The Evolution of Location Based Services: A Critical Review and Analysis

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By Shahabuddin Amerudin Abstract Location Based Services (LBS) have undergone remarkable transformations since the publication of the seminal paper “The Development of Location Based Services in Malaysia” in 2009. This paper offers an extensive review and analysis of the original article in the context of recent advancements and trends in LBS technology. By critically examining the original paper’s content, relevance, and implications for today’s technological landscape, this review aims to provide a comprehensive understanding of

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Sub-Meter Accuracy in Consumer Smartphones: Advancements and Challenges in GNSS Positioning

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By Shahabuddin Amerudin Sub-meter accuracy in the context of GNSS (Global Navigation Satellite System) refers to the capability of a receiver to determine its position with an accuracy of less than one meter, typically in the range of centimeters or decimeters. This level of accuracy is highly desirable for various applications, including augmented reality, precise navigation, surveying, agriculture, and other location-based services where high precision is crucial. To achieve sub-meter accuracy, GNSS receivers need access

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A Review: Accuracy for the Masses: Real-Time Sub-Meter in a Consumer Receiver?

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By Shahabuddin Amerudin Authors: Joshua Critchley-Marrows, Marco Fortunato and William Roberts Publication Date: April 6, 2020 The article discusses a new methodology aimed at achieving sub-meter Global Navigation Satellite System (GNSS) accuracies in consumer devices such as smartphones. The goal is to enable applications like augmented reality and visually impaired navigation to function with higher precision. The article explores the challenges of achieving high accuracy in mass-market GNSS receivers, especially in the context of real-time

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Understanding Location Accuracy Requirements in Various Applications

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By Shahabuddin Amerudin Introduction Location accuracy plays a vital role in numerous applications, enabling precise positioning, navigation, and tailored experiences. Different applications have varying location accuracy requirements based on their specific use cases and objectives. In this article, we explore a range of applications and their location accuracy needs, spanning from high accuracy requirements in the millimeter range to general accuracy needs within a few meters. Conclusion It’s important to note that these accuracy ranges

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Understanding Location Accuracy in Consumer Smartphones

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By Shahabuddin Amerudin Introduction Consumer smartphones have become integral to our daily lives, offering a wide range of features and functionalities, including location-based services. The accuracy of location information provided by smartphones is crucial for navigation, mapping, and various location-dependent applications. In this article, we explore the general capabilities of consumer smartphones in achieving location accuracy and the factors that influence it. GPS Technology and Accuracy Global Positioning System (GPS) is a widely used positioning

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GNSS for Underwater

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The optimal arrangement of buoys is determined in terms of accuracy and availability depending on the number of available buoys and targeted water depth for an efficient operation. For example, at a targeted depth of 30 m in fresh water, a maximum horizontal position root-mean-square (RMS) error of less than 3 m can be achieved with a set of five buoys providing a service radius of up to 72 m. https://doi.org/10.3390/rs12213636 The formal transfer of

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Terms – Geographic(al) Information System, GIScience, Geomatics, Geoinformatics, Geoinformation Technology and Geospatial Technology

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Common people, often, get confused with the terms Geographic(al) Information System, GIScience, Geomatics, Geoinformatics, Geoinformation Technology and Geospatial Technology. To understand the differences or similarities among them we need to fine-tune our understanding about these frequently used and interchangeable terms. Geographic Information System (GIS) is a computer-based information system used to digitally represent and analyze the geospatial data or geographic data. The GIS has been called an ‘enabling technology’, because it offers interrelation with the wide variety of disciplines which must deal with

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Where My Location Data come from?

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Basically, your Browser feature -Geolocation-, will try to determine your position using one of these several ways. These list, show the ordered devices about what Geolocation will give your location. GPS (Global Positioning System)This happen for smartphone / anything which has GPS inside. If you have smartphone with GPS capabilities and set to high accuracy mode, you’ll likely to obtain the location data from this. GPS calculate location information from GPS satelite signal. It has

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