Method and apparatus for determining location in a satellite...

Details Method and apparatus for determining location in a satellite... Method and apparatus for determining location in a satellite...

2007-09-25

2007-09-25

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S352000

Reexamination Certificate

active

10039348

ABSTRACT:
A receiver unit (400) capable of determining its approximate location using a first and a second satellite transmission source (12&14) and, a first terrestrial transmission source (18) includes a receiver (402) and decoder (450) for receiving and decoding a first synchronization pulse from the first satellite, a second synchronization pulse from the satellite signal, and a third synchronization pulse from the terrestrial source. The receiver unit further includes a counter (412) for measuring a first delay between the first synchronization pulse and the second synchronization pulse and for measuring a second delay between one of the first synchronization pulse or the second synchronization pulse and the third synchronization pulse. The receiver unit further includes a processor (421) for determining an east-west constant delay line based on the first delay and for determining a north-south constant delay line based on the second delay.

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