What is Active and Passive Remote Sensing?

Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation. Remote sensing is used in numerous fields, including geography, land surveying and most Earth Science disciplines (for example, hydrology, ecology, oceanography, glaciology, geology); it also has military, intelligence, commercial, economic, planning, and humanitarian applications.
There are two types of remote sensing technology, active and passive remote sensing. Difference between these two is quite small, however, leaves great impact on their functionality. As we learnt in primary school, sun constantly emits light energy and is only source of natural light for earth. Moreover, this energy is not observed by any component in solar system. Instead it is reflected to somewhere else. Just like the moon, it shines despite of not possessing its own light source.
Follow Geospatial World
· Facebook: / geospatialmedia
· Twitter: / geoworldmedia
· Flickr: www.flickr.com/photos/geospat...
· Instagram: / geospatialmedia
· Linkedin: / geospatial-media-and-c...

[@arunganesansivakumar4397]

What an explanation!!! No book can define this this simple. Thanks professor

[@kobebarka8633]

I’m trying my hand at writing a Sci-fi story and your explanation greatly helped me get past a barrier in my writing! Thank you so much!

[@liamdavis4058]

Your camera example was wonderful. Thanks!

[@abhishekgautam1168]

You have made learning very simple.Thank you

[@shitalaprasadyadav607]

you explained it very simply and in a way that is understandable easily by most of us.

[@clivejack6048]

Excellent explanation. Thank you very much .

[@josekalaiarasan3708]

very much simple and valuable, thank you sir.

[@yenesewalemay6382]

Thanks for your,clear and easy presentation

[@mythoelogy]

These videos have been the most helpful in understanding the concept, thanks Geospatial World! :)

[@geospatialmedia]

Happy to hear that!

[@Kanikadreambig]

What an explanation! Thank you sir ❤

[@sivaranjan7945]

Thank you, sir..your way of explanation is so good. I wish you to upload more videos like this !!

[@baadalhardas720]

Very helpful...Wow..sir your way of explanation is ammazing👍🏻👍🏻👍🏻thank u sir😇❤

[@CrazyCoupleDIY]

Thanks that was absolutely short and to the point explanation

[@user-pr7mp2ed8v]

thanks so much from KSA

[@tamilarcgisuniversity]

Good video, well explained

[@sm_althaf]

Excellent explanation ❣️

[@lavena_Fatin]

Now that's what you call crystal clear Got it without leaving a spot

[@sabarindbaloch5142]

Amazing! you explained it so well, Thank you

[@paramamal9834]

Thank you sir

[@VISHALrajput-iy5dt]

Thankyou sir for easily anderstandin about remot sensing

[@yusuphmketo9781]

i appreciate DR

[@tariquemohammad2151]

Superb explain sir

[@sandy3781]

Thanku sir ......

[@sivangikumari5686]

Thank you so much Sir

[@vishnuprasad1754]

Very good explanations.

[@MuskanQ]

Thankss a ton Sir😊

[@YadlapalliIswarya]

Tq Guruji 🙏

[@timelapsenrg9078]

simple understanding at its best.

[@owangboli4082]

Bravo 🤝🏿

[@_NaushinAnjum]

thanks

[@HareeshKumar-dd1lo]

Very good and wonderful way of teaching,sending love from Pakistan.

[@muhammadzeeshan1752]

classic explanation. Superb Sir. You are Champion.

[@gurikaur-gi8sy]

U difine the remote sensing type very easy way and reader understand as well as in easy way

[@payal7270]

Sir make more videoes they are really helpful.

[@iswariya593]

Excellent explanation sir. super I am clear this

[@6JD8]

You explain so well sir

[@ashitharemesh1118]

Thank you sir🙏

[@afzalhussainarzoo727]

The way of explanation is superb

[@radhu3499]

You've explained it very well and I'm satisfied with it thank you ☺️☺️☺️☺️

[@pujanapokharel7313]

Satisfying video.. Thank-you sir for such a clear explanation

[@farooqsaeed8560]

you've explained very beautifully sir !! thankyou !!

[@johneristube4910]

great

[@dumisanisanele9796]

Salute

[@jaypeecarquez8479]

THANK YOU

[@AliRazvi]

Sirrrr Maakaaaaaa Fight chindiyaaaaaa hai tum 😎😎🔥🔥🔥🔥🔥

[@dhavalpathak8747]

Understandable!!

[@manishkumarjha3427]

Awesome 💛 Love and regards from NEPAL 🇳🇵

[@anatoby2693]

Thank you.its easy and good detail about classification of remote sensing

[@muhammadismail3460]

I have missed this class but now am not feel that i have missed important class. Thank you sir.

[@laibaraashid3506]

You teach too good your words are too clear to hear ! Thanks sir 💯👍

[@sauravkumarmandal3885]

TQ very much sir

[@PavanKumar-ft5hi]

Neat

[@miyamarchang7422]

Awesome... Thank you

[@zoekwagala8919]

THANK YOU SIR FOR SAVING THE DAY

[@anuradhijayasinghe7958]

Thank you for the clear explaination

[@cleahtemko4059]

Wooow explanation

[@sahilaryan]

ty sir

[@geniusstars9530]

How did you animate your videos

[@RJ12347]

Highly appreciated

[@anjaliannu1145]

Ur explanation amazed me everytime it gives a pure knowledge abt topic

[@andarupramudito9998]

Great analogy!

[@cosminpavel4560]

What about an infrared camera?

[@chinmoyborah1982]

what type of remote sensing can LANDSAT images be considered under??

[@aldevpaundra9938]

that was clear explanation!

[@a.janeamritha2173]

So can we say night vision cameras active?

[@tessahh1537]

Nice explanation. Thnkyu sir : )

[@jika6173]

Our eyes is passive remote sensing !

[@laxmibommidi9383]

Nice

[@sagarkantideb3929]

Sir what about an ideal remote sensing systems??

[@faizazhar1162]

Active sensors are those which use own source of light for eg in a dark room flash of mobile is use Passive sensor are those which not use it own source of light for eg in a room with the help of bulb sun light we dont use flash we attain light from other sources such as bulb and sun

[@71waleed]

THIS IS THE FIRST TIME I UNDERSTAND THESE 2 TYPES

[@bhavikjoshi4855]

🙌🙌

[@Angelicmoon-]

Thank you so much IT'S AMAZING ME

[@ayuuhinna8815]

osm

[@Abdulmoiz-be8hh]

Still have an confusion! 😥

[@prasantagorai3]

Please help me about satellite images, kindly response sir. I want to learn from you.

[@landonorris6]

I have an exam on this tommorow

[@AbdullahSaleem1]

[@ahmedaz307]

at 1:34, English is wrong, it should be it's imaging me, not amazing me.

[@singsongwriter8679]

F for u language grammar

[@bhumikarathod7894]

Thank you sir