This repository contains the scripts to derivate the ENU and ECEF coordinates from the longitude, latitude, and altitude values encoded in the NAD83 coordinates.

Related tags

Geolocationata-datum
Overview

ata-datum

This repository contains the scripts to derivate the ENU and ECEF coordinates from the longitude, latitude, and altitude values encoded in the NAD83 coordinates. These coordinates can be verified with the ESRI satellite imagery in this website. The pre-computed coordinates are provided by the CSV file containing the ENU, ECEF, WGS84, and NAD83 values derived from the original NAD83 file coordinates. The previously used, and slightly wrong, legacy ENU coordinates are also present in the CSV file for completeness. Both ENU coordinates have antenna 2A as the reference point. Keep in mind that these values might change in the future. Therefore, it's a good practice not to hard-code the pre-computed coordinates values in your software.

The process starts with the latitude, longitude, and altitude in NAD83 (ellipsoid GRS80) coordinates of each antenna. These values are converted to the WGS84 coordinate system using the position vector approximation described here. This method visually appears to perform better than the coordinate frame approximation. The obtained WGS84 coordinates are then transformed into ECEF using PyProj. Finally, the ENU position of each antenna relative to the position of antenna 2A is obtained by converting the WGS84 values into meters using the optimal Universal Transverse Mercator grid for the area. The UTM value of the reference point (antenna 2A) is then subtracted from the UTM value of each antenna.

The columns present in the pre-computed CSV-file are the following:

  • antenna: Antenna designation. It starts with a number and ends with a letter. The map below illustrates the positions.
  • lat_wgs: Point latitude in WGS84.
  • lon_wgs: Point longitude in WGS84.
  • alt_wgs: Point altitude in WGS84.
  • lat_nad: Point latitude in NAD83 (ellipsoid GRS80).
  • lon_nad: Point longitude in NAD83 (ellipsoid GRS80).
  • alt_nad: Point altitude in NAD83 (ellipsoid GRS80).
  • x: The X-axis of the point in ECEF.
  • y: The Y-axis of the point in ECEF.
  • z: The Z-axis of the point in ECEF.
  • e: Point east coordinate in ENU in reference to antenna 2A.
  • n: Point north coordinate in ENU in reference to antenna 2A.
  • u: Point up coordinate in ENU in reference to antenna 2A.
  • e_legacy: Legacy point east coordinate in ENU in reference to antenna 2A (inaccurate).
  • n_legacy: Legacy point north coordinate in ENU in reference to antenna 2A (inaccurate).
  • u_legacy: Legacy points up coordinate in ENU in reference to antenna 2A (inaccurate).

Dependencies

Owner
Luigi Cruz
Computer Engineering Student. Radio Amateur (PU2SPY). I talk about SDRs, Raspberry Pi, ML, Parallel Computing, Satellites, Python, C++ and Golang.
Luigi Cruz
Logging the position of the car on an sdcard

audi-mmi-3g-gps-logging Logging the position of the car on an sdcard, startup script origin not clear to me, logging setup and time change is what I d

2 May 31, 2022
Geographic add-ons for Django REST Framework. Maintained by the OpenWISP Project.

Geographic add-ons for Django REST Framework. Maintained by the OpenWISP Project.

OpenWISP 982 Jan 06, 2023
python toolbox for visualizing geographical data and making maps

geoplotlib is a python toolbox for visualizing geographical data and making maps data = read_csv('data/bus.csv') geoplotlib.dot(data) geoplotlib.show(

Andrea Cuttone 976 Dec 11, 2022
Google maps for Jupyter notebooks

gmaps gmaps is a plugin for including interactive Google maps in the IPython Notebook. Let's plot a heatmap of taxi pickups in San Francisco: import g

Pascal Bugnion 747 Dec 19, 2022
h3-js provides a JavaScript version of H3, a hexagon-based geospatial indexing system.

h3-js The h3-js library provides a pure-JavaScript version of the H3 Core Library, a hexagon-based geographic grid system. It can be used either in No

Uber Open Source 648 Jan 07, 2023
Simple CLI for Google Earth Engine Uploads

geeup: Simple CLI for Earth Engine Uploads with Selenium Support This tool came of the simple need to handle batch uploads of both image assets to col

Samapriya Roy 79 Nov 26, 2022
A service to auto provision devices in Aruba Central based on the Geo-IP location

Location Based Provisioning Service for Aruba Central A service to auto provision devices in Aruba Central based on the Geo-IP location Geo-IP auto pr

Will Smith 3 Mar 22, 2022
GeoIP Legacy Python API

MaxMind GeoIP Legacy Python Extension API Requirements Python 2.5+ or 3.3+ GeoIP Legacy C Library 1.4.7 or greater Installation With pip: $ pip instal

MaxMind 230 Nov 10, 2022
Pandas Network Analysis: fast accessibility metrics and shortest paths, using contraction hierarchies :world_map:

Pandana Pandana is a Python library for network analysis that uses contraction hierarchies to calculate super-fast travel accessibility metrics and sh

Urban Data Science Toolkit 321 Jan 05, 2023
ArcGIS Python Toolbox for WhiteboxTools

WhiteboxTools-ArcGIS ArcGIS Python Toolbox for WhiteboxTools. This repository is related to the ArcGIS Python Toolbox for WhiteboxTools, which is an A

Qiusheng Wu 190 Dec 30, 2022
Cloud Optimized GeoTIFF creation and validation plugin for rasterio

rio-cogeo Cloud Optimized GeoTIFF (COG) creation and validation plugin for Rasterio. Documentation: https://cogeotiff.github.io/rio-cogeo/ Source Code

216 Dec 31, 2022
Extract GoPro highlights and GPMF data.

Python script that parses the gpmd stream for GOPRO moov track (MP4) and extract the GPS info into a GPX (and kml) file.

Chris Auron 2 May 13, 2022
Download and process satellite imagery in Python using Sentinel Hub services.

Description The sentinelhub Python package allows users to make OGC (WMS and WCS) web requests to download and process satellite images within your Py

Sentinel Hub 659 Dec 23, 2022
Using SQLAlchemy with spatial databases

GeoAlchemy GIS Support for SQLAlchemy. Introduction GeoAlchemy is an extension of SQLAlchemy. It provides support for Geospatial data types at the ORM

109 Dec 01, 2022
The geospatial toolkit for redistricting data.

maup maup is the geospatial toolkit for redistricting data. The package streamlines the basic workflows that arise when working with blocks, precincts

Metric Geometry and Gerrymandering Group 60 Dec 05, 2022
Construct and use map tile grids in different projection.

Morecantile +-------------+-------------+ ymax | | | | x: 0 | x: 1 | | y: 0 | y: 0

Development Seed 67 Dec 23, 2022
pure-Python (Numpy optional) 3D coordinate conversions for geospace ecef enu eci

Python 3-D coordinate conversions Pure Python (no prerequistes beyond Python itself) 3-D geographic coordinate conversions and geodesy. API similar to

Geospace code 292 Dec 29, 2022
An API built to format given addresses using Python and Flask.

An API built to format given addresses using Python and Flask. About The API returns properly formatted data, i.e. removing duplicate fields, distingu

1 Feb 27, 2022
a Geolocator made in python

Geolocator A Geolocator made in python ✨ Features locates ur location using ur ip thats it! 💁‍♀️ How to use first download the locator.py file instal

Portgas D Ace 1 Oct 27, 2021
QLUSTER is a relative orbit design tool for formation flying satellite missions and space rendezvous scenarios

QLUSTER is a relative orbit design tool for formation flying satellite missions and space rendezvous scenarios, that I wrote in Python 3 for my own research and visualisation. It is currently unfinis

Samuel Low 9 Aug 23, 2022