Add conversion script for lat+long into ITRF frame coordinate

.gitignore

@@ -1 +1,2 @@
 *.swp
+data/

utils/geo/.gitignore

@@ -0,0 +1 @@
+de421.bsp

utils/geo/geo2vec.py

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+#!/usr/bin/env python3
+
+import logging as log
+import argparse
+
+from skyfield.api import Topos, load
+
+log.basicConfig(level=log.DEBUG)
+
+"""
+Converts pairs of format `longitute latitude` to `ns3::Vector` format in ITRF frame
+
+See `ns3::Vector::operator >>`
+"""
+
+"""
+Stores the vector data
+"""
+class Vector:
+
+    def __init__(self, x, y, z):
+        self.x = x
+        self.y = y
+        self.z = z
+
+    def __repr__(self):
+        return "%f:%f:%f" % (self.x, self.y, self.z)
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='Get the position of a position on earth')
+    parser.add_argument('latitude', type=float)
+    parser.add_argument('longitude', type=float)
+    args = parser.parse_args()
+
+    planets = load('de421.bsp')
+    earth = planets['earth']
+    boston = Topos(args.latitude, args.latitude)
+    ts = load.timescale(builtin=True)
+    t = ts.now()
+    topo = boston.at(t)
+    d = topo.itrf_xyz().m
+    print(Vector(d[0], d[1], d[2]))
+

utils/tle/.gitignore

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+env/