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Questions tagged [remote-sensing]

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2
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1answer
55 views

Delay-Doppler maps in space science

Maybe this question might be more physics related, but I've read about mostly in context of space science: What is a delay-doppler map (DDM)? I can find it in exploration of asteroids (e.g. (...
2
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1answer
48 views

Calculating orbital parameters for given requirements

I'm trying to determine what's the best way to calculate the required orbit for a LEO remote sensing satellite. I understand there exists the trade-off between sensor coverage and sensor accuracy, but ...
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0answers
23 views

Where Can I start learning / taking some online courses on remote sensing, processing the remote sensing data and general space technology basics? [closed]

Would like to learn about processing the remote sensing data. As of now I have started with sentinel data. But would like to know more to understand all the terms involved in it completely. Looking ...
2
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1answer
161 views

Which Cubesat Cameras Actually Worked in Orbit before 2019?

Short question: Which Cubesat Cameras Actually Worked in Orbit before the year 2019? Context and explanation: The very few missions which published at least one image I've found: Planet Labs ...
9
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2answers
322 views

Explanation of weird values in New Horizons data?

In this answer I computed (methods given later in post) the estimated time, distance, range, and resolution for the science capture for New Horizon's closest approach to Ultima Thule (2014 MU69). ...
4
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1answer
256 views

How to calculate New Horizons' MVIC camera max resolution at Pluto and Ultima Thule?

I am in trouble calculating the ground resolution of MVIC instrument onboard New Horizons; I found several documents about MVIC specs, like this one: http://www.boulder.swri.edu/pkb/ssr/ssr-payload-...
5
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0answers
156 views

Having deep space probes use AI to decide where to point their cameras?

With New Horizons on final approach to Ultima Thule (2014 MU69) it has been stated that some or all of the images returned may end up being blank due to the camera being pointed incorrectly because of ...
6
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2answers
297 views

Where on Mars did the largest river once flow?

It is generally accepted that once there was running water on the surface of Mars. Can it be determined from remote sensing data from space where the biggest, largest and longest ones were?
2
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2answers
102 views

Can we remotely measure the age of `Oumuamua or Bee-Zed by measuring radioactive isotope ratios?

Radiometric dating such as radiocarbon dating is commonly used for measuring the age of rocks, including meteorites. This is normally an active in-situ measurement. But spectral differences between ...
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0answers
91 views

What are relevant missions for CubeSats? [closed]

My high school is planning to launch a CubeSat to the ISS, but we need a mission. A majority of students involved are interested in the engineering aspect of constructing it, and we don't know what it ...
0
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1answer
546 views

How do I calculate pointing and stability requirements for a platform (Cubesat, UAV) if we know sensor details (IFOV, Integration Time etc)?

My project involves developing a multi-mission modular satellite bus. I have couple of payloads under consideration and have the necessary sensor details. Based on that I am trying to figure the ...
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0answers
88 views

Detection of micrometeoroid impacts on the lunar surface using thermal imaging?

For a student project we are looking into the possibility of detecting micrometeoroid (micrometer-size) impacts on the lunar surface with cubesats equipped with a thermal imaging device. We have found ...
0
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1answer
170 views

Atmospheric influences on satellite imagery [closed]

I need to know if there's any relationship between the drag force of any point in LEO with the quantity of particles or something like that that are flying in the air that makes quality of the ...
4
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1answer
323 views

Earth-based microwave radiometer for the Moon

Microwave radiometers (MWR) can be used passively, to get regolith's thickness, brightness temperature and dielectric constant. Apart from that, I have little idea of how the instrumentation's ...
6
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1answer
718 views

How is satellite data used to find drug crops?

Almost all leaves are a pretty similar shade of green, and from the altitude of a satellite a single pixel must be bigger than a whole bush. Yet satellite imagery has become central to detecting ...
9
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1answer
167 views

Measuring the pressure and temperature of Pluto's atmosphere using stellar occultations

Is this primarily done analyzing the Voigt profiles absorption bands on background of stellar spectra or on re-emission bands of atmospheric compounds? Assuming Pluto's atmosphere behaves like an ...
9
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1answer
140 views

Finding non-lit objects at light minute ranges

Let's say my hyperjumpwarpgate McGuffin drive goes bing and I find myself about half a light year away from the sun. This is right in the heart of the outer Oort Cloud. Wikipedia says that there are a ...
6
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1answer
520 views

Overheating problem in a nano-satellite due to proximity of system components

I am working in a team designing a nano-satellite for a remote sensing mission. I am a computer engineering student so I am not really familiar with space stuff. The problem is that we have been told ...
7
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2answers
342 views

Why does it take so long to find Philae's exact location?

We all have seen the photos indicating the exact planned landing site, and the (much bigger) candidate area where Philae might have finally touched down, also the pictures that show Philae "in-jump" ...
36
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5answers
11k views

Is photography from a satellite good enough to make out a person on the ground?

When I first saw Google Maps satellite view many years ago, I remember being greatly impressed (and somewhat surprised) with the image quality, considering the photographs came from up there in space. ...
12
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4answers
613 views

Are we searching for life “as we don't know it”?

The phrase "Life as we know it" is often spoken with a knowing wink, and implies the speaker is in on the big secret. Life on Earth is carbon based and every form of life we know of is on Earth. Which ...
9
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2answers
628 views

If China wanted to hush the purpose of a space launch, can it be inferred outside of China?

What I had in mind is that China's territory is rather large and they could place a launch site deep within its territory. Flow of information is tightly controlled as it is with the Great Firewall of ...
8
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1answer
105 views

To what celestial bodies are GRAIL-like missions planned?

GRAIL recently constructed a complete gravity map of Luna's irregular gravity field. Are similar GRAIL missions on the anvil to any other Celestial bodies as yet? As a corollary (probably opinion-...
6
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2answers
1k views

What's the highest resolution camera orbiting Mars as of 2013?

There are many cameras currently orbiting Mars, taking pictures of rocks and sand and things. What is the highest (in the visible spectrum) sensor resolution of these? Are there higher res ones ...
4
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1answer
1k views

What would be the most cost effective camera solution for CubeSat satellite [closed]

Commercial cubesat cameras are a bit expensive: http://www.cubesatshop.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=63&category_id=16&option=com_virtuemart&...