Teaching

Enhancing Smartphone GNSS Accuracy with External Receivers

By • • Project, Public, Research, Teaching • , , , , , , • 3 minutes of reading

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 GNSS modules that tap into constellations like GPS, GLONASS, Galileo, and BeiDou, providing basic positioning services. However, their inherent limitations, such as susceptibility to signal […]

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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 within reach through innovative approaches. The confluence of two significant GNSS frequency bands, L1 and L5, stands as a beacon of hope for realizing sub-meter

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GIS Applications That Demand Sub-Meter Accuracy

By • • Knowledge, Public, Research, Teaching • , , , , , • 2 minutes of reading

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 valuable asset in various GIS applications. Suggestion for Citation: Amerudin, S. (2023). GIS Applications That Demand Sub-Meter Accuracy. [Online] Available at: https://people.utm.my/shahabuddin/?p=6616 (Accessed: 14 August

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How to Achieve Sub-Meter Positioning Accuracy using Smartphone

By • • Knowledge, Research, Teaching • , , , • 3 minutes of reading

By Shahabuddin Amerudin Achieving sub-meter positioning accuracy using a smartphone involves utilizing a combination of techniques, technologies, and tools that optimize the device’s built-in Global Navigation Satellite System (GNSS) capabilities. While smartphones typically offer less precise positioning compared to dedicated high-end GNSS receivers, advancements in hardware and software have enabled the enhancement of smartphone-based positioning accuracy. Here’s how to achieve sub-meter accuracy: It’s important to note that achieving sub-meter accuracy with a smartphone might still have limitations, especially in challenging environments like urban canyons or densely vegetated areas. The choice of method depends on the specific requirements of your application

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

By • • Knowledge, Project, Public, Research, Teaching • , , , , , , • 4 minutes of reading

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 begins with the widespread adoption of low-cost GNSS technology. This innovation is now not only accessible but also adaptable with minimal investment. The EGSA GNSS

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Unveiling Spatial Relationships: Predictive Applications of Regression Analysis

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By Shahabuddin Amerudin Introduction In the realm of data analysis, regression analysis stands as a powerful tool that facilitates the exploration, understanding, and prediction of spatial relationships. By unraveling the intricate connections between variables, it provides insights into the factors driving observed spatial patterns. In this article, we delve into the fascinating world of regression analysis, focusing on its predictive applications through two distinct examples: the prediction of human deaths and the analysis of grave demand. Regression analysis forms the cornerstone of modern statistical analysis, enabling us to move beyond mere correlation and into the realm of causation. As we

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Spatial Analysis Techniques for Unveiling Geographic Patterns and Interactions

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By Shahabuddin Amerudin Introduction Spatial analysis is a critical discipline within geography and various other fields that deal with spatial data. It involves the examination of geographic patterns, relationships, and dependencies among data points in a given space. This exploration is crucial for understanding the underlying mechanisms driving spatial phenomena and for making informed decisions in urban planning, environmental management, economics, and various other domains. In this article, we delve into several key techniques of spatial analysis, each offering unique insights into the complex interplay between geographical elements. By exploring methods such as autocorrelation, spatial interpolation, spatial regression, spatial interaction,

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History of Geographic Information Systems (GIS) Development: An Overview

By • • Public, Research, Teaching • , , • 3 minutes of reading

By Shahabuddin Amerudin The development of Geographic Information Systems (GIS) dates back to the 19th century, when the use of geographic information to address complex issues began. In 1832, French geographer Charles Picquet produced an early version of a GIS by creating a map-based representation of cholera spread in Paris using color gradients. This marked the earliest application of spatial analysis in epidemiology. In 1854, English physician John Snow expanded this concept by mapping a cholera outbreak in London and linking it to contaminated water. This illustrated the problem-solving potential of maps in epidemiology. The groundwork laid during this time

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

By • • Knowledge, Research, Teaching • , , , , , , , • 4 minutes of reading

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 the evolution of LBS. 1. Introduction The original paper, published in 2009, explored the development of LBS in Malaysia, particularly in conjunction with the National

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Exploring the Transformative Applications of Artificial Intelligence and Machine Learning in Geospatial Technology

By • • Knowledge, Project, Public, Research, Teaching • , , , , , • 4 minutes of reading

By Shahabuddin Amerudin Abstract Geospatial technology has emerged as a pivotal discipline with far-reaching implications in numerous fields, including environmental science, geography, urban planning, and agriculture. The fusion of Artificial Intelligence (AI) and Machine Learning (ML) with geospatial analysis has ushered in an era of unprecedented advancements, elevating the capabilities of geospatial technology to new heights. This comprehensive academic article delves into the multifaceted applications of AI and ML in geospatial technology, elucidating their roles in land cover mapping, flood prediction and monitoring, precision agriculture, and traffic management. By understanding these innovative applications, readers can contribute meaningfully to the evolution

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Emerging Trends in GIS Software Systems: The Impact of Artificial Intelligence on Environmental Conservation and Resource Management

By • • Knowledge, Project, Public, Research, Teaching • , , , , , , , , • 5 minutes of reading

By Shahabuddin Amerudin Abstract Geographic Information Systems (GIS) play a vital role in environmental conservation and natural resource management. In recent years, the integration of Artificial Intelligence (AI) into GIS software has led to revolutionary advancements, enhancing the capabilities and intelligence of GIS applications. This article explores the emerging trends in GIS software systems that leverage AI technologies, focusing on various aspects such as interaction methods, data visualization, predictive modelling, spatial analysis, real-time decision-making, autonomous data collection, data fusion, precision agriculture, and environmental risk assessment. These trends are transforming the way government agencies and organizations address complex environmental challenges, promoting

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The Evolution of GIS Software 

By • • Knowledge, Public, Research, Teaching • , , , , , , , , • 2 minutes of reading

By Shahabuddin Amerudin The evolution of GIS software has been marked by key milestones and advancements that have shaped the current landscape of geospatial technology: 1. Early Beginnings (1960s-1970s): 2. Mainframe and Early Desktop GIS (1980s-1990s): 3. Introduction of Vector Data Models: 4. Integration of Remote Sensing and GPS (1990s): 5. Web-Based GIS (Late 1990s-2000s): 6. Open Source GIS (2000s): 7. Mobile GIS and Location-Based Services (2000s-2010s): 8. Cloud-Based GIS (2010s): 9. Big Data and Spatial Data Science (2010s): 10. Integration of AI and Machine Learning (Present): The evolution of GIS software has witnessed significant milestones and technological advancements, transforming

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

By • • Knowledge, Research, Teaching • , , , , , , , • 3 minutes of reading

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 to highly accurate and precise satellite positioning data. Traditional consumer-grade GNSS receivers, such as those found in smartphones, typically provide accuracy in the range of

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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 positioning. It also introduces an alternative approach to Precise Point Positioning (PPP) to improve accuracy in challenging receiver environments. Key Points: Conclusion The article presents

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https://kppusara.kstutm.com

Development of A Web Map-Based Muslim Cemetery Application in Kangkar Pulai

By • • Personal, Project, Public, Research, Teaching • , , , , , , , , , • 2 minutes of reading

Alhamdulillah… Praise be to God, and with His blessings, I am delighted to share the successful completion of another undergraduate dissertation under my supervision. Muhammad Syafiq bin Mat Tahir, a student pursuing a Bachelor of Science in Geoinformatics during the session 2022/2023, has accomplished a remarkable project titled “Development of A Web Map-Based Muslim Cemetery Application in Kangkar Pulai.” Throughout his project, Muhammad Syafiq skillfully designed a website accessible through the URL: https://kppusara.kstutm.com. This website serves as an invaluable resource for the public, enabling them to effortlessly search for grave information and precise locations within Kampung Melayu Kangkar Pulai, Johor.

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https://kppusara.kstutm.com

KPpusara Website: Laman Web Tanah Perkuburan Melayu Kangkar Pulai

By • • Project, Research, Teaching • , , , , , , , • 3 minutes of reading

By Shahabuddin Amerudin URL: https://kppusara.kstutm.com Presenting the remarkable and forward-thinking project developed by Muhammad Syafiq bin Mat Tahir, a final year student pursuing a Bachelor of Science in Geoinformatics during the session 2022/2023, under the expert guidance of Dr. Shahabuddin bin Amerudin. The culmination of his academic journey resulted in the creation of an ingenious web map-based Muslim Cemetery application for Kampung Melayu Kangkar Pulai, Johor. Muhammad Syafiq’s unwavering dedication to this project is evident in the two intensive semesters he spent meticulously crafting every aspect of the application. He commenced with an in-depth user requirement analysis, engaging with the

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Understanding Location Accuracy Requirements in Various Applications

By • • Knowledge, Project, Public, Research, Teaching • , , , , , • 6 minutes of reading

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 are general guidelines and can vary depending on specific application requirements and user expectations. Additionally, advancements in technology, such as the availability of higher-quality GNSS

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Understanding Location Accuracy in Consumer Smartphones

By • • Knowledge, Project, Public, Research, Teaching • , , , , , • 3 minutes of reading

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 technology in smartphones. With high-quality GPS receivers, smartphones can achieve location accuracy within a few meters under ideal conditions. GPS relies on signals from satellites

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Understanding Location Inaccuracy in Mapping Applications

By • • Knowledge, Project, Public, Research, Teaching • , , , • 4 minutes of reading

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 Positioning System) relies on satellite signals to determine precise location coordinates. However, several factors can affect the accuracy of GPS signals. Device limitations, such as

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