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

Digital frequency meter, Explain block diagrams of digital frequency meter ...

Explain block diagrams of digital frequency meter and describe function of each part

Kan bans in manufacturing enviornment, what are the advantages of dual-card...

what are the advantages of dual-card Kanban system campared to single card in a manufacturing environment

International business, VK Ltd a multi product company, furnishes you the f...

VK Ltd a multi product company, furnishes you the following data relating to the year 2000. First half sales Second half sales Sales Rs.45000 Rs.50000 Total cost Rs.40000 Rs

DBMS, why we study r architecture?

why we study r architecture?

Laws of motion, Expertsmind.com brings you unique solution in electrical ...

Expertsmind.com brings you unique solution in electrical engineering -          Laws of Motion -          Speed is how much distance will be covered in a certain time.

What is Cash dividend , Cash dividend Companies mostly pay dividends in ...

Cash dividend Companies mostly pay dividends in cash. A company should have enough cash in its bank account when cash dividends are declared. If it does most have enough bank bal

Developing the optics and imaging components of a mi, I have senior design ...

I have senior design this semester and my professor give my this project. could you help me

Risk Analysis, how would I find assistance with such toics as: probability ...

how would I find assistance with such toics as: probability assessment methods, risk modeling, stochatic dominance and multi-attribute methods?

Guides for the fire risk assessment, Guides for the fire risk assessment: ...

Guides for the fire risk assessment: In the UK, the Government produce guides for the FRA process that are free to download.   There are a range of guides covering  the ran

Electrical engineering (power system analysis), I have a project in power f...

I have a project in power flow analysis. The project topic is: Study of Load impact on power flow (constant power, constant impedance, constant current, induction motor) and use th

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