| 摘要 |
Disclosed is a position finder and communication system. The system includes: first, second, third, fourth, and fifth processors; a quadrature modulator; and a transmitter. The first processor is for receiving and processing multiple signals received from multiple locations and for generating from the received signals a processed position finder signal. The second processor comprises of a first cross-correlator and a transmit baseband filter, and is for generating cross-correlated in-phase and quadrature-phase processed filtered baseband signals from an input signal. The third processor comprises of a spread spectrum processor and a second cross-correlator, and is for generating cross-correlated in-phase and quadrature-phase processed spread spectrum signals. The fourth processor comprises of an orthogonal frequency division processor and is for generating a orthogonal frequency division processed signal. The fifth processor is for generating a signal from a processing of: the processed position finder signal generated by the first processor, along with one or more of the signals generated by the second, third and fourth processors. The quadrature modulator is for quadrature modulation of the signal generated by the fifth processor. The transmitter for transmission of the quadrature modulated signal.
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