#18976 Re: IRAN
Posted: 14/06/2019 12:15
Opet ti gdje ti nije mjestosalik79 wrote:славянин wrote: OR FAR OUT, nemoj da ti "ispadaju" rijeciHajmo dalje.But can you use night vision scopes during the day? Shortly answered – NO they cannot be used during the day.
In every case when using night vision scopes and other devices, the requirement is as mentioned the ambient light provided from the moon and starlight to produce an image. When talking during the day, even the smallest shadow will make those devices unusable. Modern night vision optics and scopes come with a built-in infrared light illuminator that cannot function properly during the day.
When talking about thermal night vision scopes – the principle of the thermal system is that it detects objects that radiate heat. But when sunlight is present, the thermal vision gets very confused and the user will see nothing but unrecognizable bright light, if used during the day. The image intensification tubes used for the external light sources are very sensitive and can easily be permanently damaged if exposed to a bright light – the sun light, that is why night vision scopes cannot be used during the day, only in the night.
https://www.x20.org/knowledgebase/flir-imaging-works/
he word FLIR is a US Military Acronym that officially stands for Forward Looking Infrared Radar although in common usage it has generally been changed to Forward Looking InfraRed. The term originated with airborne thermal imaging units that were angled to look forward. It has since been in public knowledge as meaning any thermal infrared imaging camera that is used. There is even a major manufacturer in the industry that borrowed the acronym. They are known as FLIR Systems Inc. and they manufacture every type of infrared camera there is.
FLIR imaging is a night vision technology used in operation desert storm war and now being used currently in operation desert fox in the Persian gulf. Thermal imaging is used not only for surveillance but for target acquisition and tracking.
Helicopters (apache) have forward looking infrared units mounted on them that can give the pilot a thermal picture miles ahead of the aircraft. Fighter planes (F-16, F-14, F-15, F-18, stealth fighter, tomcat, etc.) use thermal infrared imaging to locate and control fire to specific targets. Even some of the missiles being fired at the Iraqi’s are guided with infrared technology ( heat seeking missile ).
Thermal energy is transmitted in the infrared wavelength ( 1 micron to 100 microns ). You can see by the image above that thermal energy is closely related to visible light in that it travels in a wave. Thermal ir imaging takes traditional light amplification night vision devices ( the green images you see on TV) one step farther. The human eye can only see the narrow middle band of visible light that encompasses all the colors of light in the rainbow.
Thermal infrared imagers translate the energy transmitted in the infrared wavelength into data that can be processed into a visible light spectrum video display. Visible light is dependent on a light source ( the sun or artificial ) reflecting off an object to be received by our eyes.
Remember, all objects above 0 degrees Kelvin emit thermal infrared energy so thermal imagers can passively see all objects regardless of ambient light. This can give you an enormous advantage on the battle field, especially in the persian gulf wars (operation desert storm and operation desert fox). Advances in stealth technology have not only concentrated on creating battle field machines that are hard to see with radar, but they have also drastically reduced the thermal infra red signature. This signature is what allows thermally guided missiles to home in on there targets. The thermal infrared heat signature also allows ground and air forces to track enemy movement of large resources (tanks, planes, vehicles, etc.). Today’s battle field machines have reduced the thermal signature ( mainly by cooling the exhaust and insulating the heat producing parts ) to a level that is much harder to detect. But they are not invisible! With thermal infrared imagers military hardware, transport vehicles, machines and humans stick vastly. You can defeat traditional night vision device but you simply cannot hide completely from thermal infrared imaging technology. Not even Saddam Huisein can hide.