My studies are monitoring on a field that covered by Cocoa trees for site‑specific nitrogen fertilizer management by Remote Sensing Satellites . I want to know how can I check satellite imagery available online for a specific coordinate.
Thanks in advance for your replies.
I think we don't have a website that shows all the imagery available. You will have to search in especific websites, depending on the type of image you look for. For high spatial resolution imagery from Digital Globe (Geoeye, Worldview and Ikonos), check out in the Image Finder. For LANDSAT and other nasa products, Earthexplorer or GLOVIS.
https://browse.digitalglobe.com
earthexplorer.usgs.gov
glovis.usgs.gov
I think we don't have a website that shows all the imagery available. You will have to search in especific websites, depending on the type of image you look for. For high spatial resolution imagery from Digital Globe (Geoeye, Worldview and Ikonos), check out in the Image Finder. For LANDSAT and other nasa products, Earthexplorer or GLOVIS.
https://browse.digitalglobe.com
earthexplorer.usgs.gov
glovis.usgs.gov
earthexplorer.usgs.gov is the best answer for you as Shrikant mentioned. You can define any search criteria, including set of coordinates. If you prefer you can upload your shapefile as well but adding coordinates or points in the map is easiest way.
Another easy way is to use Apollo mappings image hunter. https://imagehunter.apollomapping.com/
Another idea, but for future use only:
usgs.gov provides RSS feeds for imagery products announcing new available scenes. You can joins these RSS feeds to the footprint polygons of the scenes (e.g. WRS2 for the Landsat series 7 and 8).
I am working with FME and use its RSS reader to download these feeds on a regular basis (in fact a scheduled process), and load the infos on date, scene, cloud coverage, download link ro imagery and metadata, and the preview image into a geodatabase.
Of cause you can also mine this data with regular pattern matching or XML parsing.
Anyway, you get a growing database, which you can deploy according to your needs.
Thanks All
I used all of these websites. However, my problem is that I want to use satellite imageries available online for some fields in Malaysia that means I need some websites to have higher resolution but none of them could help me. Do you know some other websites that I can use ?
Hi, for the alternative, you can also see MODIS (satellites: Terra and Aqua) calendar In the link below. You can also download the time series satellite images.
http://rapidfire.sci.gsfc.nasa.gov/realtime/?calendar
http://rapidfire.sci.gsfc.nasa.gov/realtime/?calendar
You can try NASA Reverb: http://reverb.echo.nasa.gov/reverb/
That site queries datasets from multiple sites, including some of the sites mentioned in previous posts. Maybe that might help you.
You say you need higher resolution; what resolution would you need? I think you would need to pay for the very high-resolution images (like Quickbird, IKONOS, etc.). If I remember correctly, Landsat data is at 30-meter resolution. For free data, I would guess that that's the highest resolution that you're going to get. Otherwise, you may have to pay for better (e.g. Quickbird, ~0.65-meter resolution).
http://reverb.echo.nasa.gov/reverb/
This is for Landsat 8 only, but a great resource, as it allows you to filter by location, cloud-cover, & date. Very user-friendly interface:
http://libra.developmentseed.org/
My studies are monitoring on a field that covered by Cocoa trees for site‑specific nitrogen fertilizer management by Remote Sensing Satellites . I want to know how can I check satellite imagery available online for a specific coordinate.
Try this tool:
http://sasgis.org/programs/sasplanet/SASPlanet_141212.zip
http://libra.developmentseed.org is the best site I have ever seen.
If you are interested in time series analyses the use of the Earth Observation Monitor copuld be helpful. Within EOM you can easy access, preprocess and analyse some MODIS products (EVI, LST). Time series R packages are implemented (OLS, BFAST, GreenBrown). There is a web-based version http://earth-observation-monitor.net/map.php and a mobile Version for Google play store https://play.google.com/store/apps/details?id=de.jeberle.eom.mobile and Apple store https://itunes.apple.com/de/app/mobileeom/id933625615?mt=8&uo=4
cheers, Christian
http://earth-observation-monitor.net/map.php
https://play.google.com/store/apps/details?id=de.jeberle.eom.mobile
https://itunes.apple.com/de/app/mobileeom/id933625615?mt=8&uo=4
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