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

Memory card functiOn, How does small memory card can read all photos and vi...

How does small memory card can read all photos and videos and saves by using what?

Electronics, design of a single stage amplifier

design of a single stage amplifier

Grain boundary, Q.  Describe the structure of grain boundary. Ans. O...

Q.  Describe the structure of grain boundary. Ans. One phase of metal contains many grains of various orientation, the individual crystals are called grains. Thus a grain is

Acoustic linings in aircraft engine, Acoustic linings in Aircraft engine: ...

Acoustic linings in Aircraft engine: One method of suppressing the noise from the fan stage of a high by-pass ratio engine is to incorporate a noise absorbent liner around the

Production system, Garden Variety Flower Shop uses 750 clay pots a month. ...

Garden Variety Flower Shop uses 750 clay pots a month. The pots are purchased at $2 each. Annual carrying costs are estimated to be 25 percent of cost, and ordering costs are $30

Kinematics, I want to make a model on kinematics need help.

I want to make a model on kinematics need help.

Systems Engineering, critically analyses the system design process of a pro...

critically analyses the system design process of a project for a light railway link for a city

Trusses, determine forces in each member of equilqteral truss

determine forces in each member of equilqteral truss

Information, hi there i wonder if you could help me with this quistion? whe...

hi there i wonder if you could help me with this quistion? where would i find information specifying the minimum conductor size for electrial circuits can be obtained from A. BS76

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