How the polar bear cam works:
Video of polar bears is sent from our cameras
on Buggy One to the world through a pretty neat
process. It required a bunch of really talented
and committed people to get all the pieces together,
and it takes almost as many people to keep it functioning.
First, there is Buggy One itself and the many
features that are installed in it to help us produce
the live show. Then there is a network of digital
radio links that connect the roving buggy to the
town of Churchill. And finally, there is the amazing,
mind-boggling fiber optic network that links the
world together—the Internet. Each step is
infinitely interesting and almost as complex. Much
of the Internet part is described on the National
Geographic Tundra
Tech page. Some of the behind-the-scenes
story, along with pictures of those who helped,
is what we discuss here.
The wireless link:
© Daniel J. Cox/
NaturalExposures
WildlifeHD and SeeMore Wildlife Systems first
learned of the PolarbearCam through the work of
a man named Dennis Compayre. He, along with a group
of dedicated Canadians figured out the early versions
of a polar bear camera system. These were satellite-linked
and successful projects. During the early seasons,
bandwidth in Churchill was limited, and satellite
was the only viable option. Recently, however,
a fiber optic link has been installed, and this
opened the door for other options that could provide
a better link to the world. This is when SeeMore and WildlifeHD became
involved.
Our background at SeeMore and WildlifeHD is in
setting up terrestrial wireless radio links for
wildlife monitoring. As we studied the topography
in Churchill, we learned that with three repeaters,
we could help create a good quality digital link
to the tundra—both to Gordon Point and to
Cape Churchill.
Working with Sheldon Pollichuk in Winnipeg, we
installed a 45mb all-digital link that provided
enough flexibility to serve our needs on the moving
buggy, and it also provides the bandwidth to serve
future production goals. These include streaming
live, HD video from Buggy One to the world.
© Daniel J. Cox/NaturalExposures
We have three cameras on Buggy One. Two are small
Sony PTZ cameras, and one is a Sony F900 HDCAM.
We routinely switch between the two small cameras
depending on which side of the buggy has the best
polar bear activity. When things are really good,
we take out the HDCAM which has a Miranda down-converter
attached.
Video from our cameras goes to three places. The
first is to a Real Networks encoder, which sends
the compressed streaming video to Seattle and from
there to the rest of the world. The second is to
an encoder that is talking to a decoder in Churchill.
This provides live video to the town of Churchill
via the L &D cable television building. Finally,
we encode still images and provide these to PBI.
The link from Buggy One into Churchill supports
all of our video/still needs plus it provides Internet
and phone bandwidth. In the evening, we edit the
HDCAM footage on Buggy One, and after compressing
it, the H.264 video files get uploaded via the
radio link to Apple. We can deliver as much as
30 minutes of new HD footage each day.
© Daniel J. Cox/NaturalExposures
Getting the
link installed required three outstanding people.
Sheldon Pollichuk, Konrad Schaad, and John Bykerk.
Dozens of others were involved, include Hudson
Bay Helicopters and the folks at the Northern
Studies Center. But it was Sheldon, Konrad
and John who did the real physical and mental work
necessary to install the system.
© Daniel J. Cox/
NaturalExposures
Two days before going live on National Geographic,
a wind and snow storm damaged the network, and
we were completely shut down. The trouble was near
the top of a 197 foot tower where we deduced electric
cables had been damaged. The storm was fierce and
blowing snow prevented us from seeing the top of
the tower. Sensible people don’t climb towers
in these conditions, but waiting for the storm
to end would have resulted in disappointing an
audience waiting to see the bears.
Both Konrad and Sheldon suited up and climbed
the tower. In total, they spent over eight hours
at the top of the tower and with frozen hands they
made permanent repairs. Thanks to them, we went
online on October 16th, as scheduled.
© Daniel J. Cox/
NaturalExposures
At the same time that the data link was getting
repaired, a crew of mechanics, welders, and electricians
were scrambling to complete Buggy One. They worked
overtime because other commitments at Tundra Buggies
prevented work on the filming buggy until early
October. In fact, when we arrived to begin installing
electronics in Buggy One during late September,
the buggy’s cabin and frame were not yet
connected.
Led by Rob Mollard, the mechanics and welders
worked with amazing speed to complete Buggy One.
The things they accomplished are every bit as impressive
as anything on American Chopper.
© Daniel J. Cox/
NaturalExposures
During the end of the first week in October, the
Tundra Buggy shop crew set out to build the electric
jib arm. Designed by SeeMore, this arm would allow
Buggy One’s driver to raise and lower the
camera—an addition that allows us to get
the camera lens-to-nose with the bears (and then
raise it as the bears get too curious). The actuator
that drives the system is a motor used for adjusting
hospital beds.
Around 10PM the day before we launched, Jason
Slavuta built a human-cage on the underside of
the buggy. In a few hours, he created what would
otherwise take a crew of five to do in a week.
Simply amazing. This new camera cage allows the
camera operator to climb below-deck of Buggy One
with the HD camera for the same lens-to-nose view
of the bears that we get with the electric jib
arm.
© Daniel J. Cox/
NaturalExposures
At 10AM on the morning of October 16 th, with
some of the welds still hot and calking still wet,
Buggy One rolled out of the shop. A few hours later,
it was at Gordon Point and streaming live video
to National Geographic.
The crew that worked on Buggy One, and who don’t
often get credit for their amazing work includes:
Rob
Mollard
Jason Parsonson
Jason Slavuta
Brian Gullick
Lorne Compayre
Back to Polar Bear Cam Page
Help all creatures large and small, human and non-human. WildlifeHD.com. |