Geospatial Addressing
How big an address space do we need?
- Earthís radius is 6378 km
- Earthís diameter is 40,075 km = 4.0075 x 109 cm
- 232 = 4,294,967,296
32 bits gives a resolution of .93 cm
in an Earth-centered frame of reference
- 96 bits is enough
- From the center of the earth to well beyond geosynchronous orbit
- Easily fits into an IPv6 address (128 bits)