It
is not rain on the radar – it
is “chaff”
is “chaff”
Johns
Weather Channel, via Facebook
No
this is not rain falling across SEQ.
This is what’s referred to as
Radar “Chaff”.
Radar chaff is used as a radar countermeasure in
which aircraft or other military targets spread a cloud of small,
thin pieces of aluminium, metallised glass fibre or plastic.
The
radar-jamming material either appears as a cluster of targets on
radar screens or overwhelms the screen with hundreds of returns, or
“false echoes”.
The reason for deploying the chaff was to shield
the activity of Australian fighter jets from any potential prying
eyes during a training exercise ( currently being conducted over SEQ
). Radar reflects off it and gets a bounce. Instead of seeing
individual dots and a whole bunch of aircraft on the radar it just
sees this wall of radar reflection coming back, so it’s difficult
to identify targets.
The chaff that was released is made up of
aluminium fibres thinner than a human hair which are tightly wound
together and then dispersed by the wind when released.
Remind you of anything?
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