Questions tagged [satellite]

In the context of spaceflight, it is an object which has been placed into orbit by humans.

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22 views

Satellite imagery for download

I'm new to GIS and I'd like to apply some machine learning techniques to decent-quality satellite data for making certain types of predictions. This would potentially be for commercial purposes. I'm ...
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60 views

Get a list of all the images that match the conditions in Google Earth Engine (not only the first)?

Normally when I run this code I get the least cloudy image but I want to know what the other images are. I use this code: var image = ee.ImageCollection('COPERNICUS/S2') .filterBounds(...
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ESRI Clarity vs Google Maps satellite images, distortion due to elevation?

I have a couple of satellite images, each about 1 km square, of the same rock climbing area. One is from ESRI Clarity, the other from Google Maps. The Clarity image is projected to UTM and has a UTM ...
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Satellite image analysis using sentinel in python

I am trying to download the map of certain region using Sentinal. I am using "BANDS-S2-L1C" to authenticate. When i try running an algorithm to fetch the data of the region, it is throwing "Server ...
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Creating segmentation masks for high resolution images?

I have some very high resolution satellite 30cmx30cm images. I am trying to label some things in the images using polygons or masks. How do I go about creating segmentation masks for this images. ...
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High resolution RGB satellite images for different daytimes and seasons of the year

I am looking for high resolution RGB satellite images with the following requirements: Very high resolution: ~1m per pixel Coverage: Big cities in US and/or Europe Revisits during different daytimes (...
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18 views

Extracting or masking of very large raster to reduce file size on disk?

I have a very large 8-band raster (339806 x 61704) that I cannot load to memory to manipulate (R, raster:canProcessInMemory indicates I need 4999.16 GB of ram to load this file). However, I only need ...
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20 views

Permissions are blank when trying to load satellite images from Planet API

I am trying to download the map of Melbourne using Planet API. I have given AOI coordinates of Melbourne. When I run the code the permissions are returning blank ("_permissions": []). I cannot able to ...
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1answer
35 views

Geos projection not centered on the equator?

I'm working with QGIS and satellite view projections, in order to achieve something similar to the maps created by Richard Edes Harrison for Fortune magazine in the '40s (reference). I have a question ...
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1answer
46 views

High resolution and reasonable cost RGB satellite images [closed]

I need to obtain high-resolution RGB satellite images with reasonable cost for Pakistan. The objective is to guide tourist on high-resolution GIS maps. Google Earth does not have very high resolution ...
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2answers
150 views

Automatic split a mosaic of satellite images into pieces

I have a mosaic of satellite images, but for the analysis, I need to define the boundaries of each part. Does anyone know how to do it in an automatic way? I need to get the red boundaries like on the ...
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Google satellite xyz tile layer in QGIS has lower resolution than the basemap in Google Earth?

As far as I can tell, the Google satellite imagery loaded as an xyz tile in QGIS is the same image that is used in Google Earth, but at a lower resolution. The lower image below is from QGIS using the ...
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3answers
215 views

Can a satellite go over the same area in different passes overtime

Can a sun-synchronous satellite (let's consider Sentinel-1) go over the same place, one time in an ascending pass and the next time (or few times after) in a descending pass?
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840 views

Decision tree classifying of satellite image in R?

I want to classify satellite image in R using RWeka classifier, J48. I have a CSV file with the classes required, and raster data loaded in R. I am able to make the tree, however, I am not able to use ...
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Calculating Satellite Azimuth from Landsat WRS data?

I found the below answer in regards to how one identifies the satellite azimuth from Landsat Images, but am not sure how you translate the path/row into azimuth angle. I have searched for such, but am ...
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1answer
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What do horizontal (H) and vertical (V) polarization mean for satellite radar?

I'm reading about synthetic aperture radar (SAR), and one of the basic concepts is that the transmitted and received signals can have "horizontal" (H) or "vertical" (V) polarization, but I can't find ...
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Storing earth observation derived attributes for polygons [closed]

I want to generate a number of vegetation related indices (NDVI, NDTI, etc., min/max/avg/std (pixel values)) from earth observation data for a large number of polygons during the entire growing season,...
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1answer
54 views

How to Sample Locations from a Satellite Image

I am using the Near infrared and red bands from satellite images to research soil quality in southern Africa. The study site is about 20 km wide and 20 km long so almost square shape, and I am using 5 ...
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1answer
60 views

QGIS displays satellite data very blurry when ArcGIS Pro looks clear?

I am looking at a WorldView 3 image in QGIS (right in image) and in ArcGIS Pro (left) and there is a huge difference in quality. QGIS looks so blurry/a lower resolution. Any idea what's happening?
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1answer
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Is it possible to get satellite image tile sets from something like openmaptiles tiles offers?

I am able to get an offline tile set for the USA from here. However, I was wondering if it is possible to get satellite imagery of those tile sets. I have been checking online and most require to be ...
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3answers
437 views

Finding Sentinel-1 data from the hub

Can somebody please tell me how to download data from specific locations on the sentinel-1 data hub? I cannot seem to get the geospatial search function to work...
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1answer
90 views

Compress Large size of satellite image by Open Source GIS software [closed]

I have a new challenge to compress large size of satellite image from 59GB to 10GB as maximum size by Open Source GIS software to publish it to GeoServer.
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575 views

What causes this rainbow image artifact in Google Maps satellite imagery?

I discovered this "rainbow" over the Yellowstone River in Google Maps: View the site in Google Maps: https://goo.gl/maps/y6xETmY859M2 You can see a distinct red, yellow, and blue streak hovering ...
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2answers
135 views

Multi-Spectral High Resolution Satellite images for flood events

I'm searching for multi-spectral high resolution satellite images for flood events. I found a database of flood events from this link with dates and approxiamte locations (polygons) and I used the ...
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1answer
36 views

Updating road database using QGIS?

I have a 2017 database for a road network. It has RUTM Coordinates, and other attributes. I have a 2018 database for the same road network. Due to the nature of GPS, the RUTM coordinates in the new ...
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Calculating satellite position in lat, lon given the position of receiver, altitude of satellite, azimuth and elevation angles

I want to calculate position of a satellite, given the position of the receiver, azimuth,elevation angles and height above ellipsoid for the satellite. I think this should be a simple geometry problem ...
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1answer
176 views

Import GDAL_TRANSLATE IMAGE GOES-13

I have this questions, how to Import by GDAL_TRANSLATE IMAGE GOES-13? Whats is possible projection? Files: 1501201445G13I01.TIF Size is 14400, 12001 Coordinate System is `' Metadata: ...
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23 views

Projecting a satellite full-disc image?

I receive full-disc GOES-16 images wich look like this: I want to crop it and project it so it look like this: How can I do this? Ideally from a command line tool so I can automate the process.
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1answer
37 views

Didn't show all the column while export the CSV file while using Google Earth Engine

I'm trying to calculate the water areas and the statistics of each band for each water areas to see if there are seasonal changes. The exported .csv file only have the columns ("GNIS_ID","AreaSqKm","...
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0answers
21 views

How to create coordinate system (using Lat/Long) across IR & VIS satellite images

A recent project of mine has been to gather IR and VIS data from WeatherUnderground's online site for the purposes of creating fun and informational temporal GIFs. Now, I'd like to take it a step ...
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2answers
6k views

Free Web-service providing Satellite Images

Is there any web-service currently available which is hosting satellite images as open-source, just like OSM web-service hosting vector maps? We want to make a real-time traffic monitoring commercial ...
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3answers
371 views

Looking for old satellite images

I'm looking to display satellite images of regions on a timeline starting from 2010, preferably updated regularly say every month or so. Are there apis that provide that for commercial use ?
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1answer
70 views

How to create georeferenced dataset from georeferenced satellite image? [closed]

I downloaded a nighttime light composite satellite image (https://ngdc.noaa.gov/eog/dmsp/downloadV4composites.html#AVSLCFC) which uses a scale for light intensity from 0 (no light) to 63 (max light). ...
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1answer
21 views

Mapping Jason-3 Data in ArcGIS Desktop?

Has anyone figured out an easy way to convert Jason-3 data in NetCDF format to a GIS format (raster, shapefile, etc.) so it can be viewed in ArcGIS Desktop? Jason-3 data is available for free in ...
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0answers
26 views

Downloading Aster level 1T product?

When I try to download Aster level 1T data from the USGS Earth Explorer site it asks me to enter my username and password over and over when I click on download link of my desired product. What ...
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1answer
30 views

High-resolution, hyperspectral satellite imaging?

I am hoping to expand my (biology-focused) research to include satellite data. For this, I'd need satellite imaging that includes multiple values in the visible spectrum (specifically, above 490nm) ...
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Seeking Public API to get GPS satellite's position?

Is there any public availible API that allows you to retrieve the current coordinates of satellites such as GPS and Galileo? I've only found ways to get Satellites Ephemeries and calculate the ...
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0answers
23 views

Seeking night satellite images on which light from Earth can be seen? [duplicate]

I am working on a college project making cubesat. I'm in the group containing a sensor that will be used to measure light pollution. Currently we are trying to find existing images of earth containing ...
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2answers
174 views

Seeking downloadable images for night?

Where can I download freely available images for night from for South Asian region? ?
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Creating Workspace for Satellite Imagery in ArcGIS Pro?

I am trying create mosaic from Sentinel – 2 satellite data. To realize this task I’ve used “New Ortho Mapping Workspace” and “Satellite” Type. In next step I’ve chosen appropriate sensor type, the ...
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1answer
107 views

Displaying hdf5 file at correct location? [closed]

I have downloaded the INSAT-K1 VHR INSOLATION PRODUCT (https://mosdac.gov.in/catalog/doi/36). This is satellite data in hdf5 format. When I display the raster in either ArcGIS or QGIS it appears at ...
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calculating HRMS using NMEA sentences including GPGGA , GPGSV, GLGSV, QZGSV,QZGSA, GPGSA?

I have NMEA sentences including GPGGA , GPGSV, GLGSV, QZGSV,QZGSA, GPGSA and GNGSA. my goal is to achieve HRMS accuracy meter. produced android devices for special intent gives GP/GN GST nmea message ...
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1answer
812 views

Publicly accessible (near) real-time satellite imagery

The operators of the Himawari-8 weather satellite provide a fresh full-disc picture of Earth every 10 minutes. This is a great resource and powers applications such as RealEarth. Are there any other ...
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1answer
91 views

What is the minimum `metadata` specification for the Open Data Cube?

There is a standard metadata definition here, but I would like to create a new one, with only the absolutely required fields. What is the minimum set of values that can be used to define a metadata ...
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1answer
61 views

Downloading satellite imagery from German cities (zoomlevel > 13)

I am looking for a way to download satellite imagery for later use with ml similar to this: I have to download quite a number of these images so downloading directly from Google Maps isn't really an ...
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Using carto mobile iOS sdk download offline map having satellite map style instead of normal map style

Is there any way to use satellite map style for maps downloaded for offline usage using Carto Mobile SDK?
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1answer
266 views

Writing custom Prepare Scripts for Open Data Cube?

How do I write custom prepare scripts for the Open Data Cube format ? The docs say the following: We expect that many new Data Cube instances will require custom prepare scripts to be written. It ...
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1answer
221 views

Adding Yandex Satellite map in OpeLayers

How can I add Yandex satellite map in OpenLayers? new ol.layer.Tile({ title: "Yandex Uydu", baseLayer: true, visible: true, source: new ol.source.XYZ({ url: 'http://vec0{1-4}.maps.yandex....
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1answer
73 views

Visualization of 11-bit images

I'm trying to visualize a 11-bit TIFF image using matplotlib. To do it, I load the image using tifffile to obtain a 3D numpy array. Next, I have to down-sample the image because the array contains ...
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5answers
3k views

Where can I download free satellite imagery of Cambodia for offline use?

I am an entry level GIS user - I have had one semester of GIS in college. I have successfully downloaded raster satellite imagery from Seamless (tiff files) for my class project. Now I am trying to ...