GPS

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

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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Location Privacy: Ensuring Control and Protection in an Evolving Digital Landscape

By Shahabuddin Amerudin Abstract In today’s interconnected world, location-based services have become an integral part of our daily lives. These services, which rely on various technologies such as satellite navigation systems, mobile carrier antennas, and wireless networks, enable us to navigate, communicate, and access a wide range of information. However, the pervasive use of location data raises significant concerns regarding location privacy. This article delves into the concept of location privacy, emphasizing the importance of

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HD GNSS – An Introduction

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

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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GIS Applications That Demand Sub-Meter Accuracy

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

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

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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Understanding Location Accuracy Requirements in Various Applications

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

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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Understanding Location Inaccuracy in Mapping Applications

By Shahabuddin Amerudin Introduction Location accuracy plays a crucial role in mapping applications, allowing users to navigate, find points of interest, and track their movements. However, it’s important to acknowledge that location inaccuracy can sometimes occur, leading to discrepancies between the displayed location and the user’s actual position. In this article, we explore the various factors that contribute to location inaccuracy and discuss strategies to mitigate its impact on mapping applications. GPS Accuracy GPS (Global

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GNSS for Underwater

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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Location Privacy

Beresford and Stajano define location privacy as “the ability to prevent other parties from learning one’s current or past location.” This definition specifies that the data subject—or the person whose location data is affected—should have control over the use and subsequent use of their data, which can be viewed as an extension of the previously presented definition of privacy. The device’s physical location can be determined using one of three methods: (1) satellite navigation systems

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Location-Based Service (LBS)

A Location-Based Service (LBS) is usually a service running on a mobile device that provides facts or recreational information. It employs geolocation to make the facts or entertainment more personal to the user of the application. An example of a typical LBS is one that identifies the location of a device and then discovers the location of restaurants in the immediate vicinity of that location. As LBS become more common, their commercial value will become

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Geocoding

Geocoding (geographically enabling unit records) is defined as the process of finding associated geographic coordinates (expressed in latitude and longitude) from other geographic data for the statistical units, such as street addresses or postal codes. (Geocoding is a way to ensure that the data “knows” where it is.) In other words, geocoding involves taking location information for these statistical units (such as address) and linking this information to a location coordinate (i.e., x,y,z coordinates) and/or

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Where My Location Data come from?

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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