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US 2007/0184783 A1Published application
Positioning method and apparatus
AssigneeKoninklijke Philips Electronics N.V.
InventorJosi Rosenfeld
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Abstract
In a GPS or GSM system using DSSS signals, accurate and robust time-of-flight signal processing is achieved by selection of leading-edge or correlation techniques based on a variety of tests and environmental conditions.
Claims26
Positioning method for a radio system, the method comprising:
- receiving signals at a unit of the system;
- applying at least one test on the received signals to select a processing operation on the signals, the operation being one of the following:
- a correlation processing operation (Step 9, 12), a leading edge processing operation (Step 10);
- and
- then effecting the operation selected.
2 more elements
Positioning apparatus for a radio system, the apparatus comprising:
- means to receive signals at a unit of the system;
- means (20, 21, 22) to apply at least one test on the received signals to select a processing operation on the signals which is one of the following:
- a correlation processing operation, a leading edge processing operation;
- and
- means to effect the operation selected.
2 more elements
Dependencies are inferred from the claim text.