Frederick Raab
Frederick Raab is an engineer who has played a part in creating electromagnetic 3D tracking systems.[1]
He specializes in radio-frequency (RF) power amplifiers.
He runs a company named Green Mountain Radio Research (GMRR).
He was an employee of Polhemus starting in 1975 and ending in 1980.[2]
Patents[edit]
- US4054881A - Polhemus[3]
- US4314251A
- U.S. Patent 4,346,384
Before Polhemus[edit]
Frederick Raab attended Iowa State University for undergraduate and graduate studies.[2] He holds a PhD.
Works of GMRR[edit]
Magnetic tracking study[edit]
The fields scattered by helmet-mounted CRTs can significantly degrade the performance of a magnetic-field helmet-mounted sight. Under contract to U.S. Air Force Aerospace Medical Research Laboratory, GMRR developed a multipole model of this phenomenon and software for extraction of its parameters. Laboratory measurements showed that the dipole terms of the model predict the scattered fields with no more than a 16-percent error. The residual field-prediction error was shown to be due to noise and multipole components.[2]