Types of Remote Sensing

 

📡Types of Remote Sensing📷

Remote Sensing is classified based on Energy Source 

•  Active Remote Sensing
•  Passive Remote Sensing 

Remote Sensing Types

1. Active Remote Sensing

• Active sensors emit their own energy in order to scan objects and areas whereupon a sensor then detects and measures the radiation that is reflected or backscattered from the target
• RADAR, Ultrasonic and LiDAR technologies are working under Active Remote Sensing technique
• In Active Remote Sensing, the energy is generated using artificial devices

2. Passive Remote Sensing

• Incident solar energy (energy from sun) is absorbed, reflected and transmitted by the object
• The reflected solar energy was detected by the sensor is called Passive Remote Sensing
• RGB camera, multispectral camera and thermal camera-based aerial image acquisition is the best example for passive remote sensing
• It requires sunlight as source. so that the data acquisition can’t be done at night time under this technique

#RemoteSensingTypes #ActiveRemoteSensing #PassiveRemoteSensing #Radiation #LiDAR #SolarEnergy #RemoteSensingSensor #Multispectral #AerialImage #ImageAcqusition #AerialSurvey #AerialMapping