Abstract: An example geolocation system for mounting on a mammal incorporates simple sensing sleeves on the calves of the body support members, combined with an accelerometer based gravity direction and force sensing at the center of mass of the body. The example system is connected to a digital processing unit and a battery power supply to integrate the sensing to determine kinetic and potential energy of the body locomotion over time in a method that integrates out the aperiodic motion of the body about the center of mass, and uses the residual motion to measure the center of mass locomotion from a known point.