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Sensing in 2015!
Dr. Satyaprakash
satya@GISdevelopment.net

Sitting in the National Disaster
Response cell, I received an update
on my cellphone from the weather
department about a major hurricane
striking the SW coast within a
couple of hours, which is within few
miles form the financial capital.
I had to prepare a evacuation plan
for the coastal city. As if this was
not enough, the cellphone beeped
again with another message about
an earthquake in the central part,
close to the business hub. Both the
disaster needed immediate attention
towards preparing the evacuation
plan for the coastal city and the
recovery plan for the earthquake hit
region. I logged on to my system
and looked for the possible satellites
available above the two regions. I
found ASWE637, a 0.2m resolution
satellite, available over the central
part and ZNTR-HR, recently
launched meteorology cum remote
sensing satellite available for the
coastal region, which can also provide
0.1m resolution satellite image,
on demand. Both the satellites are
new into the orbit and had demonstrated
their capabilities in the lab,
but this would be their D-day, when
people from my department would
use the images for their practical
usage.
I quickly called two of my best officers,
one was playing a game of
squash and other was in a meeting
with his client. Luckily, both of them
were in the 20 floor building, which
houses this response cell. We immediately
moved to the 19th floor,
which has all the data receiving and
processing capabilities. For want of
time we had to get the processed
data from the satellite. In other
times, we would have downloaded
the data and processed at our processing
centre. We all logged on to
three different terminals and Jermy
started looking at the ASWE637 data
and Noni looked at ZNTR-HR data.
Jermy logged on to the satellite and
accessed the available data. He
found the data was available for the
last three hours and could be used.
He ran the OBPR (Object Based Pattern
Recognition) algorithm and the
computer in the satellite processed
the satellite image for the last three
hours. The satellite identified the
damaged physical infrastructure
and prepared a new image and sent
a message that the required image
is available for download. Before
downloading the
processed image, Jermy
ran the RNV module to
convert the identified
infrastructures to vector.
By the time, the image
was downloaded (at a
speed of 1Tbps), the vector
map of the destroyed
assets were also prepared.
Jermy used the GIS software
available with him
and overlaid the new map
with the archive map of
the region. The house
numbers and other data
were extracted from the
archived map and was
integrated with the new
map. This gave an estimate
of the extent of the damages
and the number of people affected.
Using the recently acquired satellite
image and the updated vector map,
Jermy was able to prepare the disaster
recovery plan for the region in
45minutes and was sent to the relief
commissioner and the mayor of the
city for further action.
While Jermy was assimilating the
data for the central region, Noni
was busy with the data of the
coastal region. Meanwhile, I logged
into the department of defence special
service (disaster cell has a
authorised login) and looked for the
available UAVs. There was a UAV at
15deg oblique angle from the coastal
city. I requested for a special permission
to manoeuvre the UAV and the
camera. While, I waited for the permission
to be granted, Noni had
already downloaded the required
data for the entire coastal region
with the 'eye of the storm' at the
centre of each of the scene. She prepared
the map showing the path of
the hurricane and projected that the
hurricane may strike the coastal city
within 115minutes.
The message was relayed to all the
mobile service providers, ham radio
operators and hobbyists with a
request that the message be transmitted
to all the subscribers, with a
caution not to panic, but to be prepared.
Beep, and the message in my
mobile was the confirmation of the
permission granted to access the
UAV and its data, as per my requirement.
I again logged onto the
department of defence website and
accessed the UAV though the
received authorised login id and
password. I manoeuvred the UAV
vertically to the coastal city through
the path of the hurricane and operated
only the Thermal IR camera,
LiDAR and the Z-band frequency of
SAR.
This generated three different maps
not only for the coastal region but
also for the path of the hurricane. I
tried to keep the sensors and camera
of the UAV over the 'eye of the
storm' and kept monitoring its
progress. A feed from the same
monitoring screen was given to the
national TV broadcasting station,
which helped the citizens, actually
watch the progress of the hurricane.
When 35minuts were left for the
hurricane to strike the coastal
region, we could see the hurricane
getting weak and changing its
course due to the low pressure area
in the Kings island, 500miles further
SW of the coastal city. This gave us
some relief, however, the earthquake
hit region demanded our early
attention. I asked Noni to keep an
eye on the hurricane and hurried to
Jermy for possible assistance. I
logged out of the UAV's manoeuvrability
menu, not before putting it to
its original course and also deactivated
my login id and password.