Remote Sensing C

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Re: Remote Sensing C

Postby bwy » Tue Apr 05, 2011 6:22 pm

The Eviscerator wrote:Hey, just wondering, what are the formats of you guys' tests and what things show up a lot?
I've only done this event at one tournament so far and it had a lot of questions like "what is the scale in this picture" and "what is the area of the swath" and questions on satellite bands.

That sounds about right for me for the past 2 years. And also "what's happening in this picture?"

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Re: Remote Sensing C

Postby Wadhk » Tue Apr 05, 2011 9:18 pm

The Eviscerator wrote:Hey, just wondering, what are the formats of you guys' tests and what things show up a lot?
I've only done this event at one tournament so far and it had a lot of questions like "what is the scale in this picture" and "what is the area of the swath" and questions on satellite bands.


I've gotten questions like IDing structures in the image, what type of image (false color, different TM bands), and comparing images taken at different times (and what happened in the image taken later)
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Re: Remote Sensing C

Postby gneissisnice » Wed Apr 06, 2011 1:50 am

I've also seen questions on weather phenomena (not too much, just a question or two on hurricanes). I've also seen questions on specific satellites, like LandSat (I don't really know the details on the questions though, that was my partner's domain, so he did all those questions).

And you know, it's funny that I have no idea what people are talking about in this thread, and I still managed 3rd at Nats. That really was a bad test that year if my partner and I could get 3rd with no idea what we were doing (he did know his stuff better than I knew mine, though).
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Re: Remote Sensing C

Postby haverstall » Wed Apr 06, 2011 3:33 am

I haven't read through the entire forum, so forgive me if this is redundant.

Besides Nebraska's Remote tests, has anyone had NDVI show up on a test? I'm nervous that it will appear on the Nationals test, and I'll have no clue what it means.
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Re: Remote Sensing C

Postby The Eviscerator » Wed Apr 06, 2011 3:42 am

haverstall wrote:I haven't read through the entire forum, so forgive me if this is redundant.

Besides Nebraska's Remote tests, has anyone had NDVI show up on a test? I'm nervous that it will appear on the Nationals test, and I'll have no clue what it means.

I haven't seen it before.

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Re: Remote Sensing C

Postby greywolfst1 » Wed Apr 06, 2011 2:36 pm

haverstall wrote:I haven't read through the entire forum, so forgive me if this is redundant.

Besides Nebraska's Remote tests, has anyone had NDVI show up on a test? I'm nervous that it will appear on the Nationals test, and I'll have no clue what it means.


NDVI = Normalized Difference Vegetation Index = (NIR-Red)/(NIR+Red)

In my opinion everyone doing remote sensing should know NDVI because almost everyone who uses remote sensing data for applications in vegetation uses NDVI or and NDVI-based product. I teach NDVI in my Introduction to GIS course because it is so prevalent in the scientific literature.

FYI I am posting the Nebraska State Test for this year.

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Re: Remote Sensing C

Postby Wadhk » Wed Apr 06, 2011 7:32 pm

haverstall wrote:I haven't read through the entire forum, so forgive me if this is redundant.

Besides Nebraska's Remote tests, has anyone had NDVI show up on a test? I'm nervous that it will appear on the Nationals test, and I'll have no clue what it means.


Haven't seen that on a test. But, like greywolfst1 said, you might want to know it (or put some info about it on your reference sheet).
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Re: Remote Sensing C

Postby zyzzyva980 » Thu Apr 07, 2011 1:25 am

I had NDVI at regionals. (Then again, it was copied from the NE regional >.>) I hope to upload some NDVI / EVI stuff to the wiki next time I get the chance, though. You'll probably see it at *some* point in this event.
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Re: Remote Sensing C

Postby Gillen » Thu Apr 07, 2011 1:33 am

I have seen NVDI on a couple of questions. Its also useful to know if you need to explain something about using remote sensing to analyze vegetation for a short answer or essay type question.

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Re: Remote Sensing C

Postby The Eviscerator » Thu Apr 21, 2011 6:03 pm

Does anybody think that we will have to be able to calculate the energy of a wave from its wavelength?
The thought just occurred to me, and even though I've never seen it on a test before, it does seem related to the concepts of Remote Sensing.

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Re: Remote Sensing C

Postby EastStroudsburg13 » Thu Apr 21, 2011 10:19 pm

I doubt we would have to do that, that seems more like an Optics question to me (you probably already know that). It's plausible, if someone really wanted to throw competitors for a loop. However, all someone would need is a particularly informative table about the electromagnetic spectrum in your notes (like the one I have), or a small section describing how to do the calculation. It's not hard, just use E=hv and c=(frequency)*(wavelength), so it shouldn't be a problem and shouldn't take up too much space, so if you want you can learn it or put it in your notes somewhere.
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Re: Remote Sensing C

Postby The Eviscerator » Wed Apr 27, 2011 12:10 am

Thanks, I think I might put it on the sheets just in case.

Anyways, do you guys study a lot for this event? The resources to study seem kind of limited, yet the tests are more difficult than those of other events in my opinion.

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Re: Remote Sensing C

Postby Wadhk » Wed Apr 27, 2011 7:52 pm

I practice IDing images, looking up satellites, and memorizing the basics of remote sensing. Its hard to cover everything that's on the tests.
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Re: Remote Sensing C

Postby haverstall » Thu Apr 28, 2011 10:12 pm

The Eviscerator wrote:Does anybody think that we will have to be able to calculate the energy of a wave from its wavelength?
The thought just occurred to me, and even though I've never seen it on a test before, it does seem related to the concepts of Remote Sensing.


DEFINITELY. In all of my Remote tests, a question has come up pertaining to this.
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Re: Remote Sensing C

Postby haverstall » Thu Apr 28, 2011 10:26 pm

Hate to double post, but I was just reading through the forum, and noticed how some people said Remote doesn't seem useful.

Back in March, the rocket carrying Glory, a satellite, exploded, and when I heard the news, I immediately knew it was one of the future A-Train satellites.

I felt so proud of myself.


Ok, there's my two cents.
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