The slender javelins are very similar to "sonobuoys" - the floating instruments that are dropped from aeroplanes to study the oceans.
Like sonobuoys, the new BAS projectiles are released down a tube and exit from the belly of an aircraft.
They fall rapidly towards the ice, using a 20cm-wide parachute to stabilise their descent.
When javelins hit the surface, they are travelling at about 50m per second (120mph) and have had to be engineered to withstand the highg-forces associated with a very rapid deceleration.
Small fins, or ice brakes, fitted to the sides of the spears prevent them from driving too deep.
This ensures the tail of the javelin containing its satellite communications antenna sticks upright above the snow and is able to relay the GPS data back to BAS.
"The javelins need to go to a certain depth so that they don't get blown over by the wind. On the other hand, the mast must be sufficiently tall that it doesn't get buried by snow," explained Dr David Jones, who leads the technical development on Project Javelin.
Very troubling - Canada is becoming something of a red state... You can't work out where the benefits in basic research may be. This could lead to a serious brain drain.
Scientific discovery is not valuable unless it has commercial value," John McDougall, president of the NRC, said in announcing the shift in the NRC's research focus away from discovery science solely to research the government deems "commercially viable".
backwards in so many ways ..
Of course there are pressures in the US to follow a similar path.