Measuring apparatus for detecting the distance "H" to an object

Details Measuring apparatus for detecting the distance "H" to an object Measuring apparatus for detecting the distance "H" to an object

1988-10-11

1990-08-07

Lall, Parshotam S.

Boots, shoes, and leggings

342122, 342128, 364433, 364576, G01S 1334

Patent

active

049473549

ABSTRACT:
A measuring apparatus for detecting the distance h to an object transmits and receives returns of a linearly frequency-modulated wave obtained by means of an oscillator (5) and a signal generator (7). A beat frequency signal is obtained by mixing the transmitted and received waves. The beat frequency signal at the output of mixer (22) is sampled and digitized by a signal sampler (30). The height "h" can be estimated by analyzing the frequency spectrum of this beat frequency wave. This spectrum is provided by the formula: ##EQU1## in which formula the coefficients a.sub.i are those of a p-order predictor. This predictor provides a digital estimatin of a beat frequency wave sample on the basis of p previous samples.

REFERENCES:
patent: 3577143 (1971-05-01), Poirier et al.
patent: 4443792 (1984-04-01), Pidgeon et al.
patent: 4509049 (1985-04-01), Haendel et al.
patent: 4568938 (1986-02-01), Ubriaco
patent: 4599618 (1986-07-01), Haendel et al.
patent: 4739330 (1988-04-01), Lazarus
patent: 4766436 (1988-08-01), Crepin et al.
patent: 4825214 (1989-04-01), Dejaeher

Affiliated with

Also associated with

Rating

Measuring apparatus for detecting the distance "H" to an object does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measuring apparatus for detecting the distance "H" to an object, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring apparatus for detecting the distance "H" to an object will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-965335