Monitoring stability of an on-frequency repeater
First Claim
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1. A method of monitoring stability of an on-frequency repeater, the method comprising steps of:
- generating a signature signal comprising a sequential series of signal pulses, each signal pulse having a selected pulse function;
transmitting the signature signal through an output of the amplifier;
detecting, during a quiescent period between transmission of successive signal pulses, a respective quiescent power level of an input signal component received through an input of the amplifier and having a frequency corresponding to the selected pulse function;
detecting a respective transmit power level of the input signal component during transmission of the next successive signal pulse; and
estimating the repeater stability using at least the transmitted signature signal and the detected quiescent and transmit power levels of the input signal component.
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Abstract
A system provides evaluation of stability of an on-frequency repeater. A unique signature is imposed on RF signals transmitted by the repeater, and RF signals received by the repeater are analyzed to detect signal components corresponding to the signature. The signature signal is composed of a sequential series of signal pulses separated by a quiescent period. Respective transmit and quiescent power levels of signal components of the input signal received by the repeater are detected. These power levels are then used to estimate the system stability.
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Citations
26 Claims
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1. A method of monitoring stability of an on-frequency repeater, the method comprising steps of:
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generating a signature signal comprising a sequential series of signal pulses, each signal pulse having a selected pulse function;
transmitting the signature signal through an output of the amplifier;
detecting, during a quiescent period between transmission of successive signal pulses, a respective quiescent power level of an input signal component received through an input of the amplifier and having a frequency corresponding to the selected pulse function;
detecting a respective transmit power level of the input signal component during transmission of the next successive signal pulse; and
estimating the repeater stability using at least the transmitted signature signal and the detected quiescent and transmit power levels of the input signal component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for monitoring stability of an on-frequency repeater, the system comprising:
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a signal generator adapted to generate a signature signal comprising a sequential series of signal pulses, each signal pulse having a selected pulse function;
a modulator for transmitting the signature signal through an output of the amplifier;
a tunable detector adapted to detect a power level of an input signal component received through an input of the amplifier and having a frequency corresponding to the selected pulse function, the tunable detector being operative during a quiescent period between transmission of successive signal pulses to detect a respective quiescent power level, and being further operative during transmission of the next successive signal pulse to detect a respective transmit power level of the input signal component; and
a micro-controller adapted to estimate the stability using at least the transmitted signature signal and the detected quiescent and transmit power levels of the input signal component. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification