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 …

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 …

57 ABSTRACT A range determination apparatus for determining target range within a range
depth of D and within a range bin error of e comprises a carrier frequency transmitter for …

An apparatus is provided for use in determining the distance and velocity of a distant object.
The apparatus employs a low energy optical radiation source that emits identical external …

A continuous wave ranging system comprises a modulator for modulating an rf carrier signal
in accordance with a pseudo random code, a transmitting antenna for radiating the signal …

(57) ABSTRACT A phase reference navigation system and method en ploys a plurality of
fixed narrow beamwidth antennas arranged to cover a predetermined angular sector and …

Green, US Patent 1,750,668, and Holmes, US Patent 2,198,113, both describe Systems in
Which distance is determined by phase neaS urements on energy transmitted and retrans …

In a ranging system, a first modulating signal is de tected as an indication of the" fine'range
from the transmitter to the target. A second modulating signal, a combined signal including" …

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 method and a device for optically measuring a distance by emitting an amplitude
modulated and bundled optical signal and by receiving the signal reflected from a target …