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Detailed text transcripts for TV channel - MSNBC - 20140421:11:25:00

With a tropical cyclone bearing down, searchers are reaching another critical juncture in the search for malaysian airlines flight 370. joins us now is dr. ellen pregger from the florida keys. it s great to have you here. let s talk about this. because the last pings that came up on radar to give a defined area and any type of lead was april 8th. now we ve got the bluefin trying to do some submersible research in the area. explain how they are doing so far and why those that are investigating and in charge of the bluefin are still coming up empty handed. well, first thing is it s a tough job to begin with. but what they re doing is they have a targeted area based on those pings and sort of triangulation from those pings. and now they ve been searching a grid pattern, calling it mowing ....

Malaysian Airlines Flight 370 , Ellen Pregger , Chuck Todd Let , Florida Keys , April 8th , It Mowing , Grid Pattern ,

CNN Erin Burnett OutFront April 16, 2014 23:26:00

They re using sonar that is made by your company. it s a different kind. but can you show what s this mapping looks like when they get that image back? can we go inside and look at that so we get an idea. first of all, they re building a we ve already seen this mow the lawn pattern. that s what we ve been doing here today. we have a grid pattern here. the boat is over here. we ve been mowing along. and slowly building up a map of different things that are on the sea floor. this is what the mission planning they have done on the auv. but the data itself, this is what side-scan sonar data looks like. it s looking out from the sensor to the side. the sound goes through the water column, hits the sea floor and moves out. as it moves out, it s building up an image of what is on the sea floor. at the moment there is nothing particularly down there. but as things show up, we ll see an image. as they get that image, it s a slow process as they build up this map of what is doug down there ....

Al L , Way Down Deep , Sea Floor , Mission Planning , Building A , Grid Pattern , Lawn Pattern , Data Itself , Water Column ,

CNN Wolf April 16, 2014 17:51:00

It s very challenging. let s go inside. i want to take a look at how this looklooks. once the sonar is down there it has got to take some data back. the idea is to move the sensor back and forth in a regular grid pattern. we re moving along now. you see that we did one line previously. as you do you re building up a map of what s on the sea floor. we re seeing in realtime the auv. they only see it at the end of their mission. they are sort of flying blindly? in a way, yes. they will make their mission planning parameters based on general information. it may change the way they search. and they re going to have to refine the way they work. we know that sonars are being ....

Data Back , Lets Go Inside , Sea Floor , Grid Pattern , Real Time , Autonomous Underwater Vehicle , Mission Planning Parameters ,

CNN CNN Newsroom April 16, 2014 19:04:00

There s more to the sonar than in this whole process. that unmanned vehicle has to have navigation systems. all of those systems have to work together. so let s take a look and you get that data. in the process of what you get from the sonar. we have been mapping throughout the day here. they re going set up a grid pattern and they re going to move that grid pattern and that s what you see here. we re now at this point and building up additional mapping information. this is going to construct the map. we re going see this live. we have gps. they don t find this until the ....

Navigation Systems , Al L , Takea Look , Grid Pattern , Mapping Information ,

CNN CNN Special Report April 9, 2014 05:07:00

That so far. and in any case, each detection sort of fills in a gap. fills in the box. and as they go back and forth in a very specific grid pattern they will start to build dots. and those dots will get tighter and tighter and you will get to a point where you can come to a very tight and close idea of where you would want to put that unmanned autonomous vehicle. and at that point you start to paint the ocean floor with sonar images. and if there is a wreckage there it will be quite obvious. now, miles what we see in australia is the larger map showing the search area, on the surface, the debris as it relates to where the pings were detected. on the close-up map, although it shows where the four pings were located and where they faded there is something missing from that map. what is missing from what the australian authorities are telling us? yeah, the thing about that map that is a little confusing ....

Grid Pattern , The Box , Ocean Floor , Sonar Images , Search Area , Detection Pings , United States ,