Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1989-10-31
1990-09-25
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
342352, 342357, 329306, 375 80, 375 94, G01S 502, H04B 7185, H04L 2722
Patent
active
049596560
ABSTRACT:
In a system for deriving position, velocity, and acceleration information from a received signal emitted from an object to be tracked wherein the signal comprises a carrier signal phase modulated by unknown binary data and experiencing very high Doppler and Doppler rate, this invention provides combined estimation/detection apparatus for simultaneously detecting data bits and obtaining estimates of signal parameters such as carrier phase and frequency related to receiver dynamics in a sequential manner. There is first stage for obtaining estimates of the signal parameters related to phase and frequency in the vicinity of possible data transitions on the basis of measurements obtained within a current data bit. A second stage uses the estimates from the first stage to decide whether or not a data transition has actually occurred. There is a third stage for removing data modulation from the received signal when a data transition has occurred and a fourth stage for using the received signal with data modulation removed therefrom to update global parameters which are dependent only upon receiver dynamics and independent of data modulation. Finally, there is a fifth stage for using the global parameters to determine the position, velocity, and acceleration of the object.
REFERENCES:
patent: 3394313 (1968-07-01), Ellis et al.
patent: 4067060 (1978-01-01), Poussart et al.
patent: 4112497 (1978-09-01), Layland et al.
patent: 4139897 (1979-02-01), Gardner et al.
patent: 4253067 (1981-02-01), Caples et al.
patent: 4438524 (1984-03-01), Mvilwijk
patent: 4468793 (1984-08-01), Johnson et al.
patent: 4578678 (1986-03-01), Hurd
patent: 4586153 (1986-04-01), Hobrough
patent: 4641143 (1987-02-01), Apostolos
patent: 4647935 (1987-03-01), Helbing
patent: 4649392 (1987-03-01), Apostolos
patent: 4651154 (1987-03-01), Wong et al.
patent: 4701934 (1987-10-01), Jasper
patent: 4797923 (1989-01-01), Clarke
patent: 4807256 (1989-02-01), Holmes et al.
patent: 4821284 (1989-04-01), Thomas, Jr.
patent: 4896336 (1990-01-01), Henely et al.
R. Kumar, "Efficient Detection and Signal Parameter Estimation with Applications to High Dynamic GPS Receivers", Jet Propulsion Lab., California Institute of Technology.
Barron Jr. Gilberto
Jones Thomas H.
Manning John R.
The United States of America as represented by the Administrator
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