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Month: November 2016

file geodatabase personal geodatabase
GIS Analysis

What is a Geodatabase? Personal vs File Geodatabase

If you’re a bit confused whether or not to use a file geodatabase (*.gdb) or a personal geodatabase (*.mdb)… Here’s everything you need to know.

rhumb lines loxodrome mercator
GIS Analysis

Why Are Rhumb Lines (Loxodromes) a Constant Track Direction?

Rhumb lines (or loxodrome) have constant bearings and cross all meridians at the same angle. They are not the shortest distance between 2 points on a sphere

gps trilateration
Remote Sensing

Trilateration vs Triangulation – How GPS Receivers Work

Have you ever wondered how your GPS receiver works? They use a technique called trilateration, which measures distances, not angles as in triangulation.







 

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