Emirys GIS and Remote Sensing Digital Graphics Consultant

07/08/2025

Understanding Spatial Resolutions: ASTER, Landsat, Sentinel & UAVs

In Remote Sensing, spatial resolution refers to the smallest object that a sensor can detect. Choosing the right dataset often depends on the balance between resolution, cost, and coverage. Here's a quick comparison:

ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer)

➡️ VNIR: 15 m
➡️ SWIR: 30 m
➡️ TIR: 90 m

Landsat (e.g., Landsat 8/9)

➡️ Multispectral: 30 m
➡️ Panchromatic: 15 m
➡️ Thermal: 100 m (resampled to 30 m)

Sentinel-2

➡️ Multispectral: 10 m, 20 m, 60 m (depending on the band)

UAVs (Drones)

➡️ Extremely high resolution: \~2–20 cm, depending on flight altitude and sensor.

🎯 Key takeaway:

👉🏼 Use ASTER and Landsat for regional studies (e.g., land cover, geology).

👉🏼 Sentinel-2 is ideal for medium-scale environmental monitoring with frequent revisit times.

👉🏼 UAVs offer ultra-high detail for site-specific studies like precision agriculture, infrastructure inspection, or conservation mapping.

🛰️ From meters to centimeters, the choice of spatial resolution can make or break your analysis.

💬 Which of these platforms do you use most often in your work?

Image: Credit to the owner.

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01/08/2025

These indices serve as critical tools for monitoring vegetation health, detecting water bodies, mapping urban expansion, assessing fire damage, and tracking soil moisture, among countless other applications.

24/02/2025

Emrys GIS and Remote Sensing Digital Graphics Consultant
We are seasoned consultant specializing in Geographic Information Systems (GIS) and Remote Sensing, with expertise in digital graphics. With extensive experience in spatial analysis, mapping, and data visualization, EGRSDGC helps clients unlock valuable insights from geospatial data.

Key Services:
1. GIS Analysis and Mapping: Spatial analysis, data visualization, and mapping solutions.
2. Remote Sensing: Satellite and aerial image processing, interpretation, and analysis.
3. Digital Graphics: Custom cartography, infographics, and visualizations.
4. Data Visualization: Effective communication of complex data insights through interactive dashboards and reports.
5. Training and Support: Workshops, tutorials, and technical support for GIS and Remote Sensing software.

Industry Expertise:
1. Environmental monitoring and conservation
2. Urban planning and infrastructure development
3. Natural resource management
4. Emergency response and disaster management
5. Research and academia

Software Proficiency:
1. ArcGIS (Desktop, Online, Pro)
2. QGIS
3. ERDAS Imagine
4. ENVI
5. Adobe Creative Suite (Illustrator, Photoshop, etc.)

17/07/2023

I need work, bring in all kinds if Mapping and GIS Jobs

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12/04/2023

GIS is not just a tool for mapping our world, but a powerful lens that allows us to see patterns, connections and relationships that were once hidden. With GIS, We have the power to transform data into insights, and insights into action, to create a more sustainable, equitable, and just future for all.


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12/11/2022

12/11/2022

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20/08/2022

Tired of manual digitizing? ✍️ Pretrained deep learning models automatically detect or extract features such as buildings and trees. Learn more in our new web course: http://esri.social/9lQT50Kocu0

GIS & Remote Sensing Consultant

29/06/2022

The Power of Landsat 9 Bands Download here https:[https://drive.google.com/file/d/1Kto36kIqYhcxvN0YlfYGnHEIpdBhxmHt/view?usp=sharin](https://t.co/s1aPhXhFlu)g

Learn how to build all the RGB combos with the Landsat 9, 8 and Sentinel-2 bands outside of the Google Earth Engine platform

29/06/2022

The Power of Landsat 9 Bands Download here https:[https://drive.google.com/file/d/1Kto36kIqYhcxvN0YlfYGnHEIpdBhxmHt/view?usp=sharin](https://t.co/s1aPhXhFlu)g

Learn how to build all the RGB combos with the Landsat 9, 8 and Sentinel-2 bands outside of the Google Earth Engine platform

06/02/2022

We Offer the following services

Technical assessment and identification of the most suitable satellite imagery, geospatial datasets and methodological approach to support the needs;
• Technical assistance in developing technical solutions using geospatial and digital technologies for monitoring vegetation, water, soil, ecosystem, land cover, land use, agricultural systems, value-chains, multi-hazard risks and vulnerability;
• Assist the preparation for image pre-processing of satellite data, including mosaicking, stacking, atmospheric corrections, object-based-image-analysis (OBIA) for segmentation and classification of land cover datasets;
• Contribute to the development of national land cover reference system, high-resolution national land cover datasets according to the LCML/LCCS ISO standard specifications, including validation and accuracy assessments;
• Assist in the development of cloud processing tools (e.g. GEE, SEPAL) and modules based on AI/ML/RS/GIS and big data

04/12/2021

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