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Questions tagged [landsat-5]

The 5th satellite in the Landsat program.

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1answer
23 views

Integrating Landsat ETM+ and OLI surface reflectance data

I want to do a time-series analysis on Landsat surface reflectance data for an extended period of time (2005-2018), which requires integration of Landsat 5, 7, and 8. Is there any procedure to make ...
0
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0answers
20 views

Resampling Landsat 5 TM bands to Hyperspectral data

I am using Indian Pines as the test hyperspectral data for image classification. I have already done classical methods like Gaussian Mixture , SVM and Random Forest classifier. Now , to compare these ...
2
votes
1answer
70 views

Poor Landsat 5 coverage in Google Earth Engine

I am analyzing Landsat data around Lagos, Nigeria going back to 1990 which includes Landsat 8, 7, and 5. I am using Google Earth Engine's code editor to access and clean the images. I am trying to get ...
1
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1answer
129 views

What does percentile mean in simpleComposite of Google Earth Engine?

I was using 'ee.Algorithms.Landsat.simpleComposite' to composite images, but I'm not sure what does this 'percentile' parameter mean?
1
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1answer
131 views

Why can not Landsat 5 image use Fmask algorithm to identify cloud?

I want to get 1990 NDVI from Landsat5,and remove the cloud cover, so I used the code: var addNDVI = function(image) { var ndvi = image.normalizedDifference(['B4', 'B3']).rename('NDVI'); return ...
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0answers
24 views

Export raster issues in Landsat 5 images for land cover classification

I'm new in the field of remote sensing. I'm trying to use the science of remote sensing for long period hydrologic modeling for large river basins. Following up some literature and online tools, I've ...
2
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2answers
3k views

NDBI formula for Landsat 8

The formula for NDBI for landsat 8 is (NIR-swir)/(NIR+swir). I am confused if it is (Band5-band6)/(Band5+band6) OR (Band5-band7)/(Band5+band7)? (For Landsat 5TM, NDBI formula is (Band5-Band4)/(Band5+...
3
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1answer
483 views

How to enforce float values for NDVI in ArcGIS?

I am trying to calculate NDVI from Landsat 4-5 TM imagery (of the year 2008) using the formula NDVI = (band4-band3)/(band4+band3) from Raster Calculator of ArcGIS 10.4.1. The problem that I am facing ...
3
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1answer
190 views

Resampling hyperspectral data to Landsat 5 TM bands

The convolution of hyperspectral data to Landsat 5 TM bands is done by using the spectral response function (SRF, or Relative Spectral Response [RSR]) of Landsat 5 TM sensor. The ranges of each valid ...
0
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1answer
70 views

Radiometric Resolution of Landsat Sensors

Landsat data is in 8-bit (0-255) format. Would the difference between the sets of visible-NIR bands for Landsat 4,5, and 7 vary significantly?
2
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2answers
1k views

Concerning “Landsat 5's cloud mask and pixel quality assessment” in Google Earth Engine

I need assistance for solving a problem with Landsat 5 surface reflectance image's cloud mask. I am new to this tool/programming and want to try this tool to process cloud mask. Through the provided ...
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0answers
39 views

Batch process doesn't work with multiple files

I'm attempting to determine land surface temperature from Landsat 5 in ArcMap 10.2.2. I created a model to generate land surface temperature. The model works correctly when I run any single landsat ...
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1answer
88 views

When calculating temperature from Landsat is it necessary to use TOA?

I'm attempting to calculate temperature from Landsat 5 and 8 thermal bands. I've already calculated NDVI, where the NDVI bands were corrected using dark object subtraction. I see that many people use ...
3
votes
1answer
298 views

Different values for NDVI from different techniques

I'm trying to calculate NDVI from Landsat 5 imagery. I'm using ArcMap 10.2.2. I know that the formula for NDVI is (VIS-INFRA)/(VIS+INFRA), where in Landsat 5 VIS= band 3 and INFRA= band 4. When I ...
0
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1answer
59 views

Landsat 5 last image in 2011?

I tried finding latest images of Landsat 5 in Earth Explorer of path 202 row 24 and the latest result is from 10/2011. Isn't Landsat 5 operational or at least been around after 2011?
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0answers
47 views

EVI not producing values between 1 and -1 Landsat5/7 TM ETM+

I am trying to do EVI in ArcMap 10.3. I have done the atmospheric corrections for all the bands needed but cannot get the values between 1 and -1. I have used the formula EVI = G *(Band4 - Band3)/(...
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0answers
281 views

Atmospheric correction using FLAASH

I want to run atmospheric correction on my Landsat TM5 picture using FLAASH (ENVI 4.8) but when I input radiance image (BIL format) into it, then this message is shown: "Enter ASCII filename ...
3
votes
1answer
497 views

Better NDVI for Landsat 8?

I'm looking at NDVI changes for an area over 20 years. There seems to be a slight downward trend, however, upon switching from Landsat 5 in 2011 to Landsat 8 in 2013 I'm getting NDVI values that are ...
2
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1answer
125 views

Big time gap in Landsat 5 archive

I am trying to download some Landsat 5 images from EarthExplorer, but for the years 1990-2009 I get only 17 results. Does anyone know why is there such an incontinuity? The only filter that I use is ...
1
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2answers
270 views

Where to download QA bands (cfmask bands) for surface reflectance Landsat7

I downloaded scenes from both Landsat 7 & 8 reflectance. However, QA bands are included in Landsat 8 but not 7. I selected "all data" when downloading. Anyone has a clue where the QA bands are for ...
3
votes
1answer
367 views

Treatment of Landsat images

I am working on a paper related to the land cover changes between 1984/85 and 2010/11 in my country and I am searching for Landsat 5 images from December 1984(2010) to March 1985(2011). Then I average ...
2
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1answer
328 views

change detction for landsat-8 and landsat-5 images

Can anyone help me in suggesting methods for change detection for landsat-8 and landsat-5 images? The software that I am using is ArcMap 10.2 and i need to find the increase in builtup area from the ...
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0answers
469 views

Layer Stacking landsat 5 surface reflectance high level data [closed]

I downloaded the surface reflectance landsat 5 scenes but when I layer stacked them my image was not how I imagined. I manually used atcor on normal scenes and it looks nothing like the scenes I layer ...
2
votes
1answer
1k views

Using Erdas for land cover land use change detection

New to Erdas but I have to do a project and I have chosen to do a landcover land change detection. I have two Landsat 5 images, five years apart from each other. What is my next step? I imagine I ...
1
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1answer
372 views

error of randomforest classification with Landsat data

I want perform randomforest classification on Landsat data. Here is some code I found from a paper. But when I run into the "classification" part, there is an error said "Error in eval(expr, envir,...
1
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0answers
77 views

How to classify land cover with MMU 25hac

By using the 30 meter resolution of landsat TM & ETM+ data, I want to create the land use/ land cover map. I have read in several studies to first decide about the minimum mapping unit (MMU) that ...
3
votes
0answers
353 views

Landsat TM, ETM+: what are radiometric calibration coefficient of each sensor to convert DN to radiance

The Landsat TM Image data that comes with zipped folder contains metadata text file in which all necessary information have been written. In order to further process that data, first DN to radiance ...
7
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1answer
2k views

How to Remove Topographic Effects Like Shadows from Landsat Image

I am using QGIS 2.4.0 Chugiak on my windows 8.1, for classification of landsat 5-7 image that contains hilly mountains with dense forest and 60% area are plains. I am classifying through Semi-...
5
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2answers
2k views

Best Landsat-5 TM band combination for detecting fire scars [closed]

I am looking for the best band combination with Landsat 5 imagery to detect fire scars.