Online output multiplexer filter measurement
First Claim
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1. A method for measuring an output multiplixer (OMUX) transfer function, comprising:
- receiving a broadcast downlink signal from a satellite;
demodulating the broadcast downlink signal;
remodulating the demodulated signal; and
comparing the received broadcast downlink signal to the remodulated signal to estimate the OMUX transfer function of the satellite, wherein the estimated OMUX transfer function comprises a ratio of the received broadcast downlink signal to the remodulated signal.
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Abstract
A method, apparatus, and system provide the ability to conduct an on-line measurement of an output multiplixer (OMUX) transfer function. A broadcast downlink signal is received from a satellite. The broadcast downlink signal is demodulated and then remodulated. The received broadcast downlink signal is then compared to the remodulated signal to estimate the OMUX transfer function of the satellite.
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Citations
23 Claims
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1. A method for measuring an output multiplixer (OMUX) transfer function, comprising:
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receiving a broadcast downlink signal from a satellite; demodulating the broadcast downlink signal; remodulating the demodulated signal; and comparing the received broadcast downlink signal to the remodulated signal to estimate the OMUX transfer function of the satellite, wherein the estimated OMUX transfer function comprises a ratio of the received broadcast downlink signal to the remodulated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for measuring an output multiplixer (OMUX) transfer function, comprising:
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means for receiving a broadcast downlink signal from a satellite; means for demodulating the broadcast downlink signal; means for remodulating the demodulated signal; and means for comparing the received broadcast downlink signal to the remodulated signal to estimate the OMUX transfer function of the satellite wherein the estimated OMUX transfer function comprises a ratio of the received broadcast downlink signal to the remodulated signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for measuring an output multiplixer (OMUX) transfer function, comprising:
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a downlink signal broadcast from a satellite; a receiver configured to receive the downlink signal; a demodulator within the receiver configured to demodulate the downlink signal;
a remodulator within the receiver configured to remodulate the demodulated signal; anda comparator configured to compare the received downlink signal to the remodulated signal to estimate the OMUX transfer function of the satellite wherein the estimated OMUX transfer function comprises a ratio of the received broadcast downlink signal to the remodulated signal. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification