Method and apparatus for measuring distances

Details Method and apparatus for measuring distances Method and apparatus for measuring distances

1977-01-26

1981-10-27

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 1380

Patent

active

042977002

ABSTRACT:
Measurement of distance is carried out by transmitting a VHF wave train crising a sinusoidal signal modulated by phase inversion in accordance with a pseudo-random sequence, at a receiver shifting a like second sequence until it coincides with the received sequence, re-transmitting a signal modulated by the second sequence, receiving the second sequence and shifting a like third sequence until it coincides with the received second sequence, and measuring the phase shift between the third sequence and a like reference sequence.

REFERENCES:
patent: 3521279 (1970-07-01), Michnik
patent: 3530467 (1970-09-01), Altwood et al.
patent: 3530470 (1970-09-01), Sheftelman et al.
patent: 3531801 (1970-09-01), Huebscher
patent: 3573819 (1971-04-01), Mason et al.
patent: 3659292 (1972-04-01), Martin et al.
patent: 3755811 (1973-08-01), Breckman
patent: 3900873 (1975-08-01), Bouvier et al.
patent: 3945006 (1976-03-01), Cleeton

Affiliated with

Also associated with

Rating

Method and apparatus for measuring distances does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for measuring distances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring distances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-282151