Saltar navegación

Activa JavaScript para disfrutar de los vídeos de la Mediateca.

GPS - Contenido educativo

Ajuste de pantalla

El ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:

Subido el 28 de mayo de 2007 por EducaMadrid

247 visualizaciones

NASA Connect Segment using a road rally to test how well the hosts can navigate using GPS receivers. The video explains how GPS works and its everyday uses.

Más información Transcripción

Descargar la transcripción

Hey, Shelly. 00:00:00
Oh, hey, Van. 00:00:01
Finally, I found you. 00:00:02
What's going on? 00:00:03
Oh, this is so neat. 00:00:04
We're going to be in a road rally. 00:00:05
A road race? 00:00:07
That's awesome. 00:00:08
No, no, no, no. 00:00:09
This is not a race against time or speed. 00:00:10
This is a race that's involved with how well we can navigate accurately. 00:00:12
Something you probably could stand some help on, Van. 00:00:17
Oh, hey, and this is Brad Ball. 00:00:20
He's from the Geographic Information Team, and he's in charge of the road rally. 00:00:22
Hey, guys. 00:00:26
Shelly, Van, this is a special road rally. 00:00:27
No maps allowed. 00:00:29
We're only going to use GPS receivers. 00:00:30
What's a GPS receiver? 00:00:31
GPS stands for Global Positioning System. 00:00:33
This little device, a GPS receiver, is the future of navigation. 00:00:35
So just how does this GPS receiver work, and how are we supposed to use it in this road rally? 00:00:38
The Global Positioning System is a constellation of 24 satellites that orbit the Earth. 00:00:44
GPS makes it possible for people using ground receivers to determine their geographic location. 00:00:48
By measuring the travel time of a signal transmitted from each satellite, 00:00:53
a receiver can calculate its distance from the satellite. 00:00:57
When receiving a signal from at least four satellites, 00:01:00
a receiver can determine the latitude, longitude, altitude, and time. 00:01:02
If the receiver is equipped with a computer that has a map, the position is shown on the map. 00:01:07
If you are moving, a receiver may also tell you your speed, direction of travel, 00:01:12
and estimated time of arrival at the destination. 00:01:17
Oh, okay. 00:01:20
I think I understand now how we're supposed to use this receiver in this rally. 00:01:21
This receiver will help us navigate to each of our destination points, 00:01:24
but we only have a certain amount of time to get there. 00:01:28
Which means speed is important. 00:01:30
So, I'm driving. 00:01:32
Wrong, Van, on both points. 00:01:34
In a rally, you maintain the posted speed limit. 00:01:36
Using the posted speed limit, plus the distance to each checkpoint, 00:01:38
we have calculated the time it should take you. 00:01:42
Ah, time equals distance divided by speed. 00:01:44
Right. Now program this receiver with your checkpoint coordinates. 00:01:47
Your challenge is to find each point. 00:01:51
The time and accuracy of finding each point contributes to your score. 00:01:53
Shelly, you're the driver. Van, you're the navigator. 00:01:57
Okay. 00:02:00
One final rule. Here's your logbook. 00:02:01
This must be signed and timestamped at each checkpoint. 00:02:03
Also, at each checkpoint, you're to collect information on the navigation 00:02:06
and how GPS applies to the featured site and get a clue to the next leg of your trip. 00:02:10
Wait for the green light. I'll send each crew one minute apart. 00:02:16
All right, Brad. I think we're ready. Okay. 00:02:19
All right, all of us. How about hopping in? 00:02:22
We've got room in the back. 00:02:24
You can come along, help us collect the information, 00:02:26
and maybe look over Van's shoulder. He'll probably need the help. 00:02:28
Let's go. 00:02:32
I still think you should let me drive. 00:02:42
Hey, hey, hey. Navigate. You navigate. I drive. 00:02:44
Valoración:
  • 1
  • 2
  • 3
  • 4
  • 5
Eres el primero. Inicia sesión para valorar el vídeo.
Idioma/s:
en
Materias:
Matemáticas
Niveles educativos:
▼ Mostrar / ocultar niveles
      • Nivel Intermedio
Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
247
Fecha:
28 de mayo de 2007 - 16:53
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
02′ 51″
Relación de aspecto:
4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:
480x360 píxeles
Tamaño:
17.18 MBytes

Del mismo autor…

Ver más del mismo autor

EducaMadrid, Plataforma Educativa de la Comunidad de Madrid

Plataforma Educativa EducaMadrid