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Questions tagged [satellite]

A natural or artificial object orbiting near a bigger object (typically a planet)

245 questions
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How can I find out if a satellite has performed maneuver?

I have been recently acquainted with orbital mechanics and am trying to do some analysis on the subject. Since I don't have subject matter expertise, I was at a crossroads with trying to decide that how would one determine if a satellite has…
aashay shah
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Why am i getting a difference between matlab's "lla2eci" and "sgp4.propagate"?

I am not experienced in this area but over the past few days I've put together some code in python that tracks (hopefully) the ISS. I've done the math and have that side of things working, but only when I inject the satellite position using…
jtatro
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How can I calculate the DOP values for a set of GPS satellites in Python 2.7.2?

I'm trying to calculate the DOP values for a set of GPS satellites in Python 2.7.2 using numpy 1.9.3. I found a guide on how to do this but I'm having trouble translating it to python. Here's what I tried so far: import numpy as np # First I…
Sutta
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How to find satellite relative velocity in skyfield?

I need to find how fast a satellite is moving relative to me. I was thinking about using the Python package 'skyfield' but I don't see how I can calculate this: from skyfield.api import EarthSatellite, Topos import skyfield.api sat =…
jeremy
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Hi, I am doing a RGB image using python for GOES16 Air Mass product, I extract the information for the range of interest like this

I am doing a RGB image using python for GOES16 Air Mass product, I extract the information for the range of interest like this: RED[RED < -26.2] = -26.2 RED[RED > 0.6] = 0.6 GREEN[GREEN < -43.2] = -43.2 GREEN[GREEN > 6.7] = 6.7 BLUE[BLUE < 243.9] =…
tonysg
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Wrong longitude calculation in pyorbital

While playing a bit with pyorbital I noticed that the function get_lonlatalt() does not seem to return a correct longitude value to me. So I have compared the returned Lon/Lat/Alt to other tracking software: The returned Altitude and Latitude are…
Nils
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How to set longitude and latitude ranges for Bokeh Google Maps plot in Python?

I can only set zooms but I need to have a very specific position so I can overlay it over another plot. How I get a view just from the limits I specified below? Right now I can only set a zoom which is difficult for overlaying on another plot.…
O.rka
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What is a simple way to extract NDVI average from polygon [Sentinel 2 L2A]

Currently, I am working on a project for a non-profit organization. Therefore, I need the average NDVI values for certain polygons. Input for my search: Group of coördinates (polygon) a range of dates (e.g. 01-31-2017 and 02-31-2017) What I now…
Pello
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How i create lat and lon in my MODIS file with python3

I have some accounts to do for a certain latitude and longitude, but in MODIS I have neither latitude nor longitude. I roamed the internet to create latitude and longitude and then after that calculate what is needed in my work. I was told that the…
Lucas Fagundes
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Is there a way to use Google Maps to estimate empty lots in NYC?

I just came from a presentation by the Manhattan Borough President who said that having a running record of empty lots in New York City is important in regards to available land for potential green space or community gardens is very important.…
kenitech
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concatenate variables in Jinja2

I'm struggling with the following example data from Satellite server when templating with Jinja2 in Ansible: "results": { "test.example.com": { "interfaces": "eth0,lo", "ipaddress_eth0": "10.251.0.45", "ipaddress_lo":…
Bob van der Waard
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How to verify results of Pyephem

I want to see "in my sky" how many satellites I can see. I'm using this code: sat_alt, sat_az, sat_name = [], [], [] observer = ephem.Observer() observer.long = Longitude observer.lat = Latitude observer.date = TimeNow HowMany = 0 print "TIME: ",…
mikesneider
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Satellite data processing error

A new satellite data processing center has just been completed and ready for the initial testing using live data being sent down from an orbiting satellite. As the very first messages are displayed on the screen and you notice many of the data…
terps24
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Android emulate GPS satellites (not only location)

I'm looking for a way to simulate satellite presence in Android Emulator. I'm able to submit lon/lat pair through telnet as "geo fix" and that works fine in google maps or similar apps, or replay .kml files through Extended controls. The problem is…
the.Legend
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Google Satellite Image Date in gmaps for iOS

Does Google have a service that can make me able to access older satellite images using gmaps api for iOS?
Oswaldo
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