Imaging infrared seekers , Other Engineering

Assignment Help:

Imaging Infrared Seekers 

A more common approach is to use an infrared waveband where there is a large amount of ambient light from the thermal emission of the
background.
There are three main infrared bands:
- Near Infrared: 0.7 µm to about 2 µm.
• Little thermal emission in this band, but can be used with laser illumination systems.
- Mid-wave Infrared: 3 µm to 5 µm.
• The mid-wave band is good for hot objects because thermal emission peaks in this waveband for aircraft and missile plumes.
- Long wave Infrared: 8 µm to 14 µm.
• The long wave band is good for room temperature scenes since the thermal emission peaks in this band for 300K.
Infrared imagers are used in each of these bands, but there are a number of problems associated with their use and manufacture.
- Silicon photodetectors do not work (CdHgTe).
- The focal planes often require cooling to 77K.
- Few are sold, and therefore need to be made to order, and are far more expensive that visible systems.


Related Discussions:- Imaging infrared seekers

Business Management Techniques -Company organisation, Business functions of...

Business functions of engineering firm 2.1-Engineering business: 2.2- Functions of engineering business

Electron gun, Electron gun: The electron gun consists of the following:...

Electron gun: The electron gun consists of the following: 1.  Cathode:  An indirectly heated cathode (negatively biased w.r.t. the screen). 2.  Grid:          A cylindric

Engineering physics, Consider a conical pendulum with a bob of mass m=80kg ...

Consider a conical pendulum with a bob of mass m=80kg on a string of length L=10 m that makes an angle of 5 deg. with the vertical. Determine the horizontal and vertical component

Alternative escape routes - means of escape, Alternative escape routes: ...

Alternative escape routes: Does everyone have access to the alternative routes or do some people have no choice about which way they go? Are all the escape routes

#title.project, what type of projects are take place in the chemical engin...

what type of projects are take place in the chemical engineering

Composite materials - notation of axes, Notation for Body Axes The stan...

Notation for Body Axes The standard notation for the body axis sytem for aircraft dynamics. This sectionexplains the signi?cance of the term body axis and develops the non-line

Welding, why is it important to only strike the arc in the weld joint

why is it important to only strike the arc in the weld joint

Linear programming application in software industry, What could be applicat...

What could be application of linear programming in software development?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd