Precise satellite ranging and timing system using pseudo-noise b

Details Precise satellite ranging and timing system using pseudo-noise b Precise satellite ranging and timing system using pseudo-noise b

1990-06-04

1991-08-20

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

H04B 7185, G01S 502

Patent

active

050418335

ABSTRACT:
A precise ranging and timing system using pseudo-noise bandwidth synthesis to provide precise orbit determination for geosynchronous and low earth orbit satellites, navigation of low earth orbiting satellite through signals transmitted through geosynchronous satellites and precise time-transfer. The system includes a novel signal structure which is comprised of disjoint, narrow band, spectral components spread over a wide bandwidth. The number of spectral components, their individual bandwidths, and their specific spectral locations over the end-to-end spread bandwidth determine the ultimate capabilities and performance achievable. The broad beam transmission of the precise ranging and timing system signal via a geosynchronous satellite provide the precise ranging and timing system capability to suitably equipped users for a multiplicity of purposes including: (1) precise orbit determination, (2) navigation of low-earth orbiting satellites through signals transmitted through geosynchronous satellites, and (3) precise time transfer.

REFERENCES:
patent: 4445118 (1984-04-01), Taylor et al.
patent: 4751512 (1988-06-01), Longaker
Ziemer, Digital Communications and Spread Spectrum Systems, 1985, Macmillan Publ. Co., pp. 348-355.

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