Positioning method and apparatus
First Claim
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1. 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.
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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.
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Citations
26 Claims
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1. Positioning method for a radio system, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. Positioning apparatus for a radio system, the apparatus comprising:
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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. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification