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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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outputs not matching from sgp4 in C++, pyephem and Heavens Above

I am trying to predict calculate the positions and predict passes of a LEO satellite from a TLE file. For convenience I just take the international space station. What I did so far, is to download the spg4 libraries sgp4 libraries for C++ and…
Bloch
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Google Maps v 3.2 - Satellite View turns white

I have written code that displays a map perfectly on a basic HTML page. However, when I embed it in my existing website code, all the functions work with the exception of "Labels" in Satellite view. When the Labels box (submenu of Satellite view) is…
paulbasel
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Getting "satellites in view", and "satellites in use" counts in Android

I am having an unusually difficult time getting correct "satellites in use" and "satellites in view" integers from my GPS implementation. I have reviewed numerous relevant Stackoverflow threads with no immediate enlightenment. Below is what I have…
portsample
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How to calculate satellite position using ephemerides data

I got a problem regarding ephemerides data. The description of the ephemerides data is located here: http://www.navcen.uscg.gov/pubs/gps/sigspec/gpssps1.pdf I can extract the bits/bytes that are important. I just don't know how to interprete…
Sheradil
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What is the maximum value of the Satellite's Signal Strength?

From the documentation of GPS_POSITION, rgdwSatellitesInViewSignalToNoiseRatio Signal to noise ratio of the satellites in view of the GPS hardware. Higher numbers indicate greater signal strength. I tried to retrieve the Satellite ID and the…
Baby
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PyEphem: What is the epoch attribute for EarthSatellite

I am using PyEphem to predict satellite passage over a point in a constellation design project. I would answer my question by it is orbit epoch but I would like to be sure. Here is an example that rose the question at first: What works Here is the…
Curly
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Getting a lattitude & longitude point on earth from ECI coordinates of a satellite

I am trying to write software in C++, that will transform ECI coordinates of a satellite at a particular time into a point on a 2D map of earth. I know ECI coordinates are easily accessible from TLE data. But it doesn't say anything about what…
James C
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Satellite MenuItem set on rounded way in android

Here My satellteMenu Xml code
deep
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The time in GPS Client when trying to see and lock onto satellites

I would like to know if we could change the time in GPS client when it is trying to see and lock onto the satellites. Everytime, I start the GPS client on my Android phone, it has the month=1 and year=1980. Does this have to be this date for GPS to…
Sadanand Hullur
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Offline World Satellite Map Without Labels(Android)

I want to include a MapView in my Application. I have been playing around with the Google Api a bit and it worked quite well. But now I want to have a map completely offline. I know there are a lot of possibilities to do this. The problem is that I…
Siggy
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Horizon for earth satellites

Adjusting the observer horizion attribute seems to have no effect on the rise / set times for earth satellites. Additionally, I found this in the libastro code: /* we don't implement a minimum horizon altitude cutoff SiteMinElev = 0; */ Is…
user1739051
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Plotly Dash not updating

import requests import os from pyorbital.orbital import Orbital from datetime import datetime import numpy as np import plotly.graph_objects as go from tqdm import tqdm import dash, math from dash.dependencies import Input, Output from PIL import…
Bobbie Space
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Negative elevation angle

Please explain what does negative elevation angle means in the low earth orbiting (LEO) satellite means. The LEO data moves from a positive elevation angle to a negative one. Can the negative elevation be useful?
TThoye
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Loading A Current NOAA GOES-18 Satellite Image on a Page in Squarespace

I need to embed the current NOAA GOES-18 Weather Satellite Image onto a web page on the Squarespace platform. Here is the web page at NOAA where they serve the images for Alaska: https://www.star.nesdis.noaa.gov/goes/sector.php?sat=G18§or=cak On…
GKTRK
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Combining .nc files and extracting selected variables

I have a similar question to u/Ananas here: Sentinel3 OLCI (chl) Average of netcdf files on Python I am running into similar problems, in so much that I cannot seem to extract the necessary information from the .nc-files and then merge them to…
Ian
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