FIELD: electronic engineering.
SUBSTANCE: method involves applying two-channel transmitter having unit for building masking signals, the third adder unit, the third multiplier, the fourth adder unit, pseudo-random sequence generator and low frequency filter. Receiver unit has the third multiplier, synchronization unit, pseudo-random sequence generator with decoder connected to it, the first and the second delay units, controlled clock pulse oscillator, key unit and the second adder unit. Pilot signal is formed as complex signal built from four sinusoid oscillations. Each pair of the oscillations is phase-manipulated with its pseudo-random sequence.
EFFECT: data transmission protection against reconnaissance.
14 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DIGITAL DATA TRANSMISSION EQUIPMENT IMMUNE TO HIGH-POWER FREQUENCY-MODULATED NOISE | 2001 |
|
RU2205506C1 |
| DEVICE TO SYNCHRONISE RECEIVING DEVICES BY CARRIER AND CLOCK FREQUENCIES IN SYSTEMS WITH CODE DIVISION OF CHANNELS UNDER HIGH INSTABILITY OF FREQUENCIES IN COMMUNICATION CHANNEL | 2011 |
|
RU2450446C1 |
| APPARATUS FOR SYNCHRONISING CARRIER AND REFERENCE FREQUENCY IN COMMUNICATION CHANNEL WITH CONSIDERABLE FREQUENCY INSTABILITIES AND ENERGY CONSTRAINTS | 2010 |
|
RU2451408C2 |
| COMPOSITE PHASE-KEYED SIGNAL RECEIVER SUPPRESSING NARROW-BAND NOISE | 2003 |
|
RU2249913C1 |
| METHOD AND DEVICE FOR SUPPRESSION OF NARROW-BAND INTERFERENCE AT RECEPTION OF COMPOSITE PHASE-MANIPULATED SIGNALS | 2003 |
|
RU2254677C2 |
| METHOD FOR SHAPING AND PROCESSING COMPOSITE SIGNAL IN NOISE-IMMUNE RADIO SYSTEMS | 2002 |
|
RU2205496C1 |
| INTERFERENCE-PROTECTED COMMUNICATION SYSTEM | 2004 |
|
RU2285344C2 |
| DEVICE FOR FORMING COMPLICATED PHASE-MANIPULATED SIGNAL | 2004 |
|
RU2265962C1 |
| TRACING WIDE-BAND SIGNAL RECEIVER | 1999 |
|
RU2157052C1 |
| PARALLEL SHORT-WAVE MODEM | 2004 |
|
RU2286648C2 |
