Imaging infrared seekers , Other Engineering

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
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.

Posted Date: 8/27/2012 9:20:03 AM | Location : United States

Related Discussions:- Imaging infrared seekers , Assignment Help, Ask Question on Imaging infrared seekers , Get Answer, Expert's Help, Imaging infrared seekers Discussions

Write discussion on Imaging infrared seekers
Your posts are moderated
Related Questions
explain any 2 case tools in software engineering

x(t)=integration((Vx(t)+Vy(t))/2*cos(theta)dt) where Vx, Vy and theta is a function of t I am getting problem with how to write it down in matlab in order to get the position x.

can two metals such as iron and nickel be separated completely by electrogravimetry?

Question: (a) Explain the three types of cyclic repetition blocks in DAB or DVB broadcasting. (b) DAB and DVB use stream and packet modes whereas MBMS uses broadcast and mu

To achieve successful results in powder metallurgy the metallic powder must be thoroughly homogenized. The term blending and mixing are both used in this content. Blending refers t

how thermoelecteric thermometer is contructed and how it working

Explain with the aid of sketch of zeroth law of thermodynamics

differences between blast , reverbatory and electric furnaces

Thrust augmentation: There are occasions when the maximum thrust from a basic gas turbine engine is inadequate and some method of increasing the available thrust is required wi