Random binary waveform encoded ranging apparatus

Details Random binary waveform encoded ranging apparatus Random binary waveform encoded ranging apparatus

1981-04-22

1984-01-31

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 171R, 343 18R, G01S 1308

Patent

active

044293100

ABSTRACT:
A ranging apparatus is provided having an encoded waveform signal which is generated by completely random sequence generator without second order statistics so that the waveform signal has a remote statistical probability of being analyzed. The modulated radio frequency waveform is transmitted to an object and the reflected signal is received by the ranging apparatus which comprises a digital solid state read-write memory arranged to have information written into the memory at a fixed frequency and arranged to have the information read out of the solid state read-write memory at a variable frequency to provide the equivalent of a rotating memory. The digital logic employed in the ranging apparatus is extremely accurate and not subject to drift and changes which could occur in analog type systems. The implementation of the ranging apparatus is accomplished with economical commercially available components thus providing an improved digital ranging apparatus.

REFERENCES:
patent: 4142189 (1979-02-01), Gleason
patent: 4322827 (1982-03-01), Weber

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