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

ALGORITHM, write an algorithm to find a number that multiplies your name 10...

write an algorithm to find a number that multiplies your name 10 times

Calculate the thermal conductivity, A steak which is 2.5cm thick is cooking...

A steak which is 2.5cm thick is cooking in a frying pan which has a 4mm thick base. The electric element used to heat the pan is turned to a level such that the bottom surface of t

Aerodynamics-flow model diagram , We will need to use several different flo...

We will need to use several different flow models as we go along. It is crucial to understand the simplifications used to obtain these models because these limit the validity of th

What is the company’s net working capital, Working capital: Laurel Electron...

Working capital: Laurel Electronics reported the following information at its annual meetings. The company had cash and marketable securities worth $1,235,455, accounts payables wo

Software engineering, analyse modelling for safe home security system

analyse modelling for safe home security system

Organic, What happened when melonic acid heated

What happened when melonic acid heated

Digital electronic.., design a 32:1 multiplexer using 16:1 multiplexer

design a 32:1 multiplexer using 16:1 multiplexer

Variable magnetic coupling transducers, Variable magnetic coupling transduc...

Variable magnetic coupling transducers A transducer of this type relies on variable coupling between magnetic coils. An example is a Linear Variable Differential Transformer (L

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