Czech Passive Radar Detecting B-2 at 150 miles (2015)
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Czech Passive Radar Detecting B-2 at 150 miles (2015)
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Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#2They do claim it works on all stealth planes including the F-35, but the B-2 is now 30 years old and was designed in the mid 1980s. Detecting it from 150 miles is impressive, but when they're equipped with 250 mile standoff air-to-surface missiles, ultimately not very useful. I'd be curious how much better the stealth is in the world of supercomputers and CFD for modern planes as well.
Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#3The B2 is relatively ancient as far as stealth tech goes.
Also, most stealth aircraft are detectable on radar. The question is how big or small is the radar cross section. That’s not something this blog post digs into. Meaning, most of the time a B2 looks like a goose or a small animal.
Correction on my part: The B-2 and F-35 have radar cross sections roughly the size of a marble.
Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#4There is no evidence in the article to assert a B-2 was actually detected at 150 miles outside of unverified claims.
Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#52015
Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#6https://en.wikipedia.org/wiki/Passive_radar
In a passive radar system, there is no dedicated transmitter. Instead, the receiver uses third-party transmitters in the environment, and measures the time difference of arrival between the signal arriving directly from the transmitter and the signal arriving via reflection from the object.
Passive radar systems have been developed that exploit the following sources of illumination:
Analog television signals
FM radio signals
Cellular phone base stations
Digital audio broadcasting
Digital video broadcasting
Terrestrial High-definition television transmitters in North America
GPS satellites (GPS reflectometry).Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#7What would air defence against a swarm of a few 1000 UAV look like? Because China...
Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#8They do claim it works on all stealth planes including the F-35, but the B-2 is now 30 years old and was designed in the mid 1980s. Detecting it from 150 miles is impressive, but when they're equipped with 250 mile standoff air-to-surface missiles, ultimately not very useful. I'd be curious how much better the stealth is in the world of supercomputers and CFD for modern planes as well.
Those missiles will help you how though? They are mostly radar seeking for target information.. this doesent emit though. This only collects. So you need reconissence by drones ( easily detected with this) ..
Sorry, but this literaly breaks a billion dollar technology. Due to the distributed nature of the natural sources, it doesent matter what angle you reflect - a stealthed object will always be a distortion to the background, which alot of computation can the filter out.
Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#9Re: Czech Passive Radar Detecting B-2 at 150 miles (2015)
#10https://en.wikipedia.org/wiki/Passive_radar In a passive radar system, there is no dedicated transmitter. Instead, the receiver uses third-party transmitters in the environment, and measures the time difference of arrival between the signal arriving directly from the transmitter and the signal arriving via reflection from the object. Passive radar systems have been developed that exploit the following sources of illu…
You can build your own with rtl dongles and lots of patience - https://www.rtl-sdr.com/building-a-passive-radar-system-with...