FIELD: radio engineering.
SUBSTANCE: used in radio monitoring equipment, radio direction finders, as well as in tools and systems in which the type of modulation of radio signals of radio emission sources is determined in the interests of their subsequent classification. To do this, at the input of the N-channel maximum selection circuit, the signal-to-noise ratio is increased by compensating for additive Gaussian noise at the outputs of each of the processing channels. The average power of the noise component of the input process is determined in the form of an additive mixture of the useful radio signal and noise and subtracted from the low-frequency component of the spectrum of the input process at the inputs of the dividers and, accordingly, at the inputs of the N-channel maximum selection circuit.
EFFECT: increasing the accuracy of determining the type of modulation of radio signals.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR MEASURING FREQUENCY OF RADIO SIGNALS | 2019 |
|
RU2739941C1 |
| DIGITAL RADIO SIGNAL DETECTOR IN NOISE CONDITIONS WITH UNKNOWN INTENSITY | 2014 |
|
RU2563889C1 |
| DIGITAL EVALUATION AND CORRELATION COMPENSATION DETECTOR | 2014 |
|
RU2575481C1 |
| METHOD FOR DEMODULATION OF SHORT-TIME SIGNALS WITH MULTILEVEL ABSOLUTE PHASE MODULATION IN FADING CONDITIONS | 2018 |
|
RU2684605C1 |
| MULTICHANNEL RECEIVER WITH CODE SEPARATION OF CHANNELS FOR SIGNAL RECEPTION WITH SQUARE M-AMPLITUDE-INVERSE MODULATION | 2017 |
|
RU2669371C1 |
| APPARATUS FOR MONITORING RADIO COMMUNICATION LINE | 0 |
|
SU1354425A1 |
| DEVICE FOR DETERMINING SIGNAL-TO-NOISE RATIO OF PHASE MODULATED SIGNALS | 0 |
|
SU1374154A2 |
| DEVICE TO COMPENSATE STRUCTURAL NOISE | 2010 |
|
RU2450445C2 |
| METHOD FOR TRANSMITTING INFORMATION USING FREQUENCY SHIFT MODULATION IN THE PRESENCE OF INTERFERENCE WITH NON-UNIFORM SPECTRAL DENSITY | 2022 |
|
RU2799089C1 |
| DIGITAL METRE OF SIGNAL CAPACITY AND NOISE CAPACITY IN RADIO RECEIVER CHANNEL PASS BAND IN REAL TIME | 2011 |
|
RU2472167C1 |
