SU489254A1 - Radiolini with noise-like signals with a combination of synchronization channels and information - Google Patents

Description

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I The invention relates to radio engineering and is used in radio engineering systems measuring the CI of motion parameters.

Izv.-stiy ritsiolinii with a noise-si1nalami sonmesheniem synchronization channels and iiiii opMaioiH, comprising at pe- redayusheG side nesushey oscillator frequency with an input soedi1N N11Y ifiaaoBoro maninul mountain, to the other input KOTOpoio nodklyuchen vychod modulator, and the phase output connected to the antenna MaiHtiiyjiHTOpa , and i-eiieftaTop pseudo-random sequence) - nosti (PSI), connected to a generator of such imNi.pses; and on the receiver side there is a node for the phase-locked tuning of the frequency of a synchronization channel gel, the output of which is connected through a series connected ||) detector, a low-pass filter and a clock generator connected to the input of the ICI generator.

However, the known radio lines have an insufficient 1-minute strength of the radius.

 Invention - Increase

First radio link snoosnosn This is achieved because

On the sides, information detection elements were inserted, while on the transmitting side, the outputs of the PSI generator are connected to the modulator inputs through the detection node of the information elements, and on the receiver side, the antenna is connected to the on-line input of the 4-detector and directly to the multiplier input. the synchronization channel, and through the series-connected multiplier the synchronization drops, another phase detector connected to the reference input of the phase detector, and the integrator to the input Let's take the nopoiuj node of our node, and another output of the generator 11 (11 through the node for detecting the information elements is connected to the second input of the multiplier of the 1x synch) channel.

Figure 1 shows 4 an uncnional radio link diagram; in fig. 2 - epc1s, which show the work of the radio.

1ioli with shumonodnyh sshchalayalami with a combination of synchronization channels and information 1N1n contains a transmitting device, in which the zero outputs of the neighbor of them of the stages of the generator PSP 1 through the circuit 2 and 3 coincidence are connected to the adder 4, the output of which is connected to the control input of the key circuit 5, the generator, and the 5 the input of which is coeflHjieH with the source of the information signal, and the output with the adjusting input of the modulator 6, whose signal input through the delay line 7 is connected to the zero output (n-1 th stage of the PSP generator 1) manipulator 8.- The second input of the phase manipulator 8 is connected to the output of the carrier frequency generator 9 and the output to the antenna. The output of the generator 10 clock pulses is connected to the clock bus of the PSP generator 1. The receiving device contains a node 11 of the phase automatic tuning of the frequency multipliers - a clock 12 of the synchronization channel, the output of which is connected through a phase detector 13 connected in series, a low pass filter 14 and a controlled oscillator 15 of clock pulses connected to the input of the PSP generator 16, an information element detection unit consisting of a, cjteM 17 and 18 coincidence, delay line 19, adder 2O and key circuit 21, the output of multiplier 22 through phase detector 23, integrator 24 and threshold node 25 are connected to the information signal receiver. The operation of the radio link with noise-like signals with a combination of synchronization channels and information proceeds as follows. Consider first the operation of the synchronization channel. It is illustrated with diagrams (see Fig. 2) for the case when a seven-element channel bandwidth is used with a cycle time T and a duration t of the element T c, and the phase demodulator is used as the multipliers of bodies 12. The multiplier inputs are connected to the I zero outputs of the n-th and (n-1) -th stages of the PSP generator 16. When a synchronization error occurs with - j. - C - pof, the OUTPUT signal of the multiplier is represented by plot 26 (see Fig. 2), from which it can be seen that the negative signal at the output of the multiplier / gel is created by four elements, and three elements are not involved in the formation of the output signal. At 6 - and O (see diagrams 27 and 28 of Fig. 2), the three elements also do not participate I in the formation of the output signal of the synchronization channel. The information is transmitted at times t and t (plot 29, Fig. 2) when the change in sign of the memory bandwidth does not affect the output of the synchronization channel. The PZ plot depicts the signal at the integrator output, where U is the threshold level. Plots 31 and 32 (see FIG. 2) show the polling and reset pulses of the integrator, respectively. As can be seen from the diagrams (see Fig. 2), the detection of the time intervals t- and t, i.e. the information element in the SRP period is implemented in the transmitter and receiver using schemes 2 and 17 of coincidence of positive pulses and schemes: 3 and 18 of coincidence of negative pulses. These intervals are then summed in adders 4 and 20 and the output signal of adder 4 opens the key circuit 5 to pass the information signal to the modulator 6, which is opened by this signal and passes the pseudo-random sequence in direct or reverse polarity to the phase manipulator 8 depending on from the sign of the information signal. The output signal of the adder 20 opens the key circuit 21 for passing the SRP to the multiplier 22. Phase detector 23 performs coherent detection of the signal, I integrator 24 integrates the signal in time-I m t-1 + tp- Next, the signal is compared with the threshold and f, and to the recipient. The subject of the invention is radiolini with noise-like signals with a combination of synchronization and information channels, containing on the transmitting side a carrier frequency generator connected to the phase manipulator input, to another input of which the modulator output is connected, and the phase manipulator output connected to the antenna, and a pseudo-random sequence generator (PSP), connected to the generator of clock pulses; I pulses; and on the receiving side there is a phase locked loop node, a synchronization channel multiplier, the output of which is connected via a serially connected phase detector, a low-pass filter and a clock pulse generator to the input of the SRP generator, in order to increase the radio permeability , on the transmitting and receiving sides, malicious detection of information elements was introduced; on the transmitting side, the eneipaTopa outputs of the memory bandwidth were connected to the input side of the motor unit through the detection node of the information elements, and and the receiving side | The antenna is connected to the reference input of the phase detector through the phase-locked loop node, directly to the input of the synchronization channel multiplier, and through the serially connected multiplier is a synchronization channel, another

{phase detector connected to reference | the input of the phase detector, and the integragork to the input of the threshold node, with another output of the SRP generator through the node detecting information elements connected to the second input of the synchronization multiplier Kanaiia.

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