A high resolution ranging method is described utilizing a novel modulated waveform,
hereafter referred to as coherent burst modulation. In the coherent burst method, high …

A high resolution ranging method is described utilizing a novel modulated waveform,
hereafter referred to as coherent burst modulation. In the coherent burst method, high …

An improved method and apparatus for precision rang ing is described using a frequency-
modulated signal source to stimulate creation of interference fringes at a rate proportional to …

An accurate ranging system for position determination of a mobile unit using trilateralization.
A pair of active reflectors return signals transmitted by the mobile unit in phase at the …

The present invention relates to active reflector radio fre quency distance measuring
systems and, more particularly, to systems which operate in a frequency-hopping mode, and …

This invention involves a method for mitigating multipath effects in radio ranging systems
which is based on searching for and finding a maximum likelihood estimate of range for a …

Apparatus for receiving ranging signals (eg signals from Global Positioning System
satellites) has a receiver coupled to a plurality of spaced antennas. The receiver includes a …

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates
generally to radio fre quency distance measuring systems and methods, and more …

An optical correlator is disclosed which, in combination with an ultrafast optical pulsed
source, can be used for estimating distances of objects with submicron precision. The …

US20080186224A1 - Apparatus and method for ranging - Google Patents US20080186224A1 -
Apparatus and method for ranging - Google Patents Apparatus and method for ranging …