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

Combustion chamber injection system - aircraft engine , Combustion chamber ...

Combustion chamber injection system: Injecting a water or water/methanol mixture into the combustion chambers increases the mass flow through the turbine and the high volumetri

Assignment #5, the date december 13, 2005. Air traffic controllers in a con...

the date december 13, 2005. Air traffic controllers in a control tower in

Maximum speed-procraft, Maximum speed -Pro craft The standard approach f...

Maximum speed -Pro craft The standard approach for prop-driven aircraft is to assume that engine and propeller together produce a power (as opposed to thrust) output that is ind

Intake anti-icing of aircraft engine, Intake anti-icing Operations of p...

Intake anti-icing Operations of present day aircraft necessitates flying in all weather conditions plus the fact that high velocity air induced into the intakes means a provisi

Installation of propeller, INSTALLATION OF PROPELLER The method of inst...

INSTALLATION OF PROPELLER The method of installation will depend on the type of propeller, and all instructions detailed in the appropriate AMM should be carefully followed; th

Petroleum Engineering project, I need help About the project I sent and it ...

I need help About the project I sent and it is the third time I am sending so please I really want help

Research paper, You will research an issue relating to money and banking. Y...

You will research an issue relating to money and banking. You will write an eight- to 10-page paper discussing your research, in depth. You will also need to relate your research t

Security Analysis & Portfolio management, ABC Ltd. has an investment opport...

ABC Ltd. has an investment opportunity available which will involve a capital outlay in each of the next 2 years and which will produce benefits during the following 3 years. A sum

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