Questions tagged [remote-sensing]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1 vote
0 answers
66 views

What is the feasibility of High Resolution (< 5m) Hyper spectral Imaging satellite?

Many companies are coming up with claim of less than 5m resolution of hyper spectral imagery, although the payloads of such caliber could be built, I have come to the understanding that SNR would be ...
Bharath Simha Reddy's user avatar
2 votes
0 answers
77 views

sentinel 2A MSIL2a - transformation -

I am working with Sentinel-2 satellite imagery and have downloaded a Level-2A product in the MSI2A format. I am trying to determine whether the reflectance values in this product need to be ...
Salah Amani's user avatar
2 votes
0 answers
145 views

Do rocket exhausts produce an electromagnetic signature to allow remote sensing of said rocket?

Rocket exhaust contains ions, the composition of which varies depending on temperature and fuel. https://arc.aiaa.org/doi/10.2514/3.27825 and https://www.eucass.eu/doi/EUCASS2017-434.pdf Figure 12 : ...
Woody's user avatar
  • 21.6k
2 votes
1 answer
371 views

Satellite's EO sensor footprint on ground

I'm a student and I'm trying to compute the footprint of a generic EO sensor starting from sensor's characteristics and position and velocity vector of my satellite in ECEF coordinates. I followed ...
Frank's user avatar
  • 315
6 votes
1 answer
278 views

Which aspects of the JWST wavefront process are the most time-consuming?

NASA is currently estimating the that the upcoming wavefront process to align the JWST's mirror segments will take around three months. This description of the WFSC process paints a picture of ...
Will's user avatar
  • 195
2 votes
0 answers
27 views

DAWN CERES HAMO CYCLE1 PDS DATA ARCHIVE seems to be corrupted

I'm working on Ceres VIR_IR data from PDS3 Archive. The downloaded data seems to not be right as I'm getting lines of various colors and not the target area, when opened in ENVI. Is the QUB file ...
Darsana Lakshmi Raj's user avatar
2 votes
1 answer
80 views

Surface processes of the valleys on Mars

I have two related questions about geophysical processes related to talus* fans on Mars: How were talus fans on Mars formed? (like Valles Marineris or Kasei Valles) What is the role of these fans or ...
Deniz Yazıcı's user avatar
3 votes
1 answer
431 views

The Surface of Mars

There are surface features on Mars that we can observe with remote sensing data. There are many shorelines seen in a way. Despite its subtle atmosphere or storms, these surface features remain. How do ...
Deniz Yazıcı's user avatar
10 votes
1 answer
375 views

How did ESA blast an atomic force microscope off the Earth, deploy it in deep space, capture tiny particles from a comet and position them 'under' it?

Answers to Is there, or has there ever been anything remotely like an electron microscope in space? show that there has indeed been one (as do answer(s) to Microscopes in space?), but mostly electron ...
uhoh's user avatar
  • 149k
0 votes
0 answers
82 views

Can space suit gloves hear, feel, or otherwise sense information through augmentation? Will they?

@mdouglasbibbey's answer describes a situation where it was impossible to "hear" = feel important information while working on Hubble during an EVA, including haptic feedback when a quick ...
uhoh's user avatar
  • 149k
1 vote
0 answers
253 views

what C/C++ image processing libraries are used on-board satellites/rovers?

Given that a full blown linux is rarely used in spacecrafts, can popular image processing libraries like opencv be use in space applications? Since radiation hardened processors are much less capable ...
Vinmean's user avatar
  • 61
2 votes
1 answer
147 views

Can mineralogy maps be made without dedicated instruments? MAGIC at Callisto

While we are still waiting for the official Discovery finalists announcement, and it's perhaps a bit premature to be discussing the proposals, I've been thinking about the exciting MAGIC mission to ...
Venus was her name's user avatar
3 votes
2 answers
2k 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. (...
sequoia's user avatar
  • 311
2 votes
1 answer
213 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 ...
flexcookie's user avatar
1 vote
0 answers
32 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 ...
hck3r's user avatar
  • 19
2 votes
1 answer
755 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 ...
Mefitico's user avatar
  • 1,967
9 votes
2 answers
408 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). ...
Alex Hajnal's user avatar
  • 1,971
4 votes
1 answer
349 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-...
jumpjack's user avatar
  • 3,033
5 votes
0 answers
177 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 ...
Alex Hajnal's user avatar
  • 1,971
6 votes
2 answers
438 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?
Cornelis's user avatar
  • 7,545
2 votes
2 answers
131 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 ...
gerrit's user avatar
  • 11.6k
1 vote
0 answers
95 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 ...
march.april.mae's user avatar
0 votes
1 answer
1k 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 ...
Siddhesh Naik's user avatar
2 votes
0 answers
104 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 ...
Alexander Vandenberghe's user avatar
0 votes
1 answer
208 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 ...
Unnamed's user avatar
  • 111
4 votes
1 answer
364 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 ...
Kuldeep Barad's user avatar
6 votes
1 answer
1k 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 ...
kim holder's user avatar
  • 21.4k
9 votes
1 answer
207 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 ...
dualredlaugh's user avatar
11 votes
2 answers
208 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 ...
David Given's user avatar
6 votes
1 answer
615 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 ...
Amr Shrief's user avatar
8 votes
2 answers
354 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" ...
TheBlastOne's user avatar
36 votes
5 answers
13k 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. ...
wim's user avatar
  • 465
12 votes
4 answers
691 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 ...
James Jenkins's user avatar
8 votes
2 answers
694 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 ...
TildalWave's user avatar
8 votes
1 answer
123 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-...
Everyone's user avatar
  • 13.6k
6 votes
2 answers
2k 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 ...
user avatar
4 votes
1 answer
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&...
Tomislav Muic's user avatar