U.S. is using electronic warfare to attack in waves

[WAQAS119]

Ahm Ahm......Too much of star wars movie stuff being tested on Libya? Amazing! Isn't it?

 

[JonAsad]

Any info on if growlers were used during operation "violate Pakistan sovereignty, kill Osama bin laden and dump him in the sea" ???-

 

[Chogy]

Here's how airborne jammers can hammer high-powered ground radars...

Remember how radars work - they transmit a pulse which is spreading out and decreasing in power with the square of the distance. The pulse hits a target, and the target reflects just a tiny fraction of the pulse back, which further decays with the distance.

These numbers are just made up to illustrate:
Ground radar generates a 100,000 watt radar signal, and maybe 10 watts hits a target. The target reflects 10% of that, so only 1 watt is sent back to the radar. This 1 watt decays (due to distance) to 0.1 watts, barely above background noise. So all the target needs to do is send more than 1 watt, and its jamming signal will be much more powerful than the real pulse.

There are circuits these days that can analyze a radar signal, and in real time, replicate it perfectly except it inserts spoofing into the echo. The ground radar can't tell which signal is the real echo. The spoofing can move the target in 3D space, or make false targets, totally disrupting the air defense capabilities. Expensive SAMs get launched at phantom targets that don't exist.

 

[Bratva]

Here's how airborne jammers can hammer high-powered ground radars...

Remember how radars work - they transmit a pulse which is spreading out and decreasing in power with the square of the distance. The pulse hits a target, and the target reflects just a tiny fraction of the pulse back, which further decays with the distance.

These numbers are just made up to illustrate:
Ground radar generates a 100,000 watt radar signal, and maybe 10 watts hits a target. The target reflects 10% of that, so only 1 watt is sent back to the radar. This 1 watt decays (due to distance) to 0.1 watts, barely above background noise. So all the target needs to do is send more than 1 watt, and its jamming signal will be much more powerful than the real pulse.

There are circuits these days that can analyze a radar signal, and in real time, replicate it perfectly except it inserts spoofing into the echo. The ground radar can't tell which signal is the real echo. The spoofing can move the target in 3D space, or make false targets, totally disrupting the air defense capabilities. Expensive SAMs get launched at phantom targets that don't exist.

In this Semester of my Undergrad study, i read the Basic Signal and system stuff. I'm amazed by the sophistication how circuits can insert a spoofing in signal. Can you explain in layman terms, what is meant by spoofing, how circuits while producing a replicate signal add spoofing in it? i.e spoofing contains what?

while we read in our course, when signal is sent, over a channel, noise is added in it. When already a distorted signal is send over, and more noise added in it and when it reaches the radar, Doesn't radar will discard this whole noise merely as noise? as i believe radar has mechanism to filter out the noise, So I didn't understand you part here, why will radar still take a Distorted signal and will show it's output on radar instead of discarding it completly as noise, so in my understanding nothing should be shown on radar?