Basics of Remote Sensing
    

    
    
    


        

Basics of Remote Sensing

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Landsat 8

Introduction

The activities will give you some basics of Remote Sensing to uderstand better next material. 

Objectives

In these activities, you will consider some aspects of remotely sensed digital images to refresh or to get the knowledge.

 



Activity 1: Digital Images

Instruction

Mark the button or check box opposite the answer you think is correct.

Then read the feedback to check your answers.

Computers typically display color in three components








Raster images have a finite set of digital values, called ,,,,



Activity 2: Resolution of remotely sensed images

Instruction

Mark the button opposite the answer you think is correct. 

Then read the feedback to check your answers.

Lansat 8 provides ultra-high spatial resolution images.



It describes the ability of the sensor to measure the signal strength (acoustic reflectance) or brightness of objects. 



The resolution specifies the revisiting frequency of a satellite sensor for a specific location.



Activity 3: Passive and active Remote Sensing

Instruction

Mark the button opposite the answer you think is correct.

Then read the feedback to check your answers. 

Spectroradiometer is



Remote sensing can be only active.



References:

1) https://earthobservatory.nasa.gov/Features/RemoteSensing/remote_08.php

2) hhttp://www.emodnet-seabedhabitats.eu/default.aspx?page=1815

3) https://landsat.usgs.gov/landsat-8-l8-data-users-handbook-section-2

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Created using the LOC Tool, University of Southampton