Wide correlated optimized code multipath reduction
AssigneeTrimble Navigation Limited
InventorRayman W. Pon
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Abstract
The apparatus and method for the multipath pseudo-range error signal reduction using wide correlated optimized additional signals are disclosed. The wide correlated additional signals can be generated at different levels of the standard tracking channel to achieve the same result of minimizing the multipath signal. The additional signals are wide correlated and optimized during one-two chip periods.
Claims14
An apparatus for use in decoding a composite signal including a satellite signal from a satellite and including a multipath distortion component, said apparatus comprising:
- a tracking satellite channel circuit for tracking said composite signal from said satellite during at least two chip time periods and wherein said composite signal is received during at least two said chip time periods;
- and
- an additional circuit connected to said tracking satellite channel circuit for generating at least one additional signal;
- wherein each said additional signal is used to minimize said multipath distortion component during at least two said chip time periods.
A method for decoding a composite signal including a satellite signal and a multipath distortion component, said method comprising the steps of:
- tracking said satellite signal by a tracking channel during at least two chip time periods;
- generating additional signals by an additional circuit;
- and
- minimizing said multipath distortion component by optimizing said additional signals by a computer during at least two said chip time periods.
Dependencies are inferred from the claim text.