Global positioning system satellite signal simulator

Details Global positioning system satellite signal simulator Global positioning system satellite signal simulator

1989-09-14

1992-03-03

Lall, Parshotam S.

Boots, shoes, and leggings

G06G 778

Patent

active

050938002

ABSTRACT:
A test transmitter apparatus has been designed for testing global positioning system (GPS) receivers. This test transmitter apparatus has the ability to generate a radio frequency (RF) output which simulates GPS satellite signals. Generally, the RF test signal is generated as follows: A digital test signal is produced by a signal generator which is driven by specific programs run on a suitably adapted computer. The digital signal is then converted to a RF signal by a numerical control oscillator and an analog converter.

REFERENCES:
patent: 4701934 (1987-10-01), Jasper
patent: 4910525 (1990-03-01), Stulken

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