SU516995A1 - Device for automatic assignment of time scales to time signals - Google Patents

Description

The luster inputs of the outputs of the command device 5, polling counter 6, and the frequency switch of anchor 7. The main outputs of the drive accumulators 4 through the device 8 combine output signals of the drive counters connected to the command device 5, which is also connected to the preprocessing device 1 and the jacTor switch bindings 7, controlled by a frequency divider 9. In addition, the command device 5 is connected to the polling counter 6 and the time counter bindings 10 through the control circuit 11. Intermediate outputs of drive counters 4 through the & The tori of the intermediate outputs 12 and the signal-to-noise ratio analysis circuit 13 are connected to one of the inputs of the device 8 combining the output signals of the right channel storage counters. The control inputs of the signal-to-noise mixture analysis circuit 13 are connected to the intermediate outputs of the anchor time counter 10, and the second output of the analysis circuit 13 is connected to the input of the control circuit 11 11. The output of the controlled frequency divider 9 is connected via the frequency switch 7 to the time counter 10 , the second output of the divider is connected to the reading device 14. The reference generator 15 is connected to the time keeper 16, the outputs of which are connected to the primary processing device 1, the controlled frequency divider 9 and the reading device 14. To the device 1 connected between primary processing also outputs the radio 17 and time counter 10.

The device works as follows.

The code pulses formed in the primary processing device 1 are transmitted to the secondary signal processing device 2, where via the switchboard of channels 3 under the influence of the control signals of the frequency switch, the anchor 7 is distributed over 1 "multi-channel counters of accumulators. Since, when searching for a signal with a known phase, the number of code units corresponding to the coincidence of the reference signal with a mixture of useful and noise signals exceeds the number of code units formed when the reference and noise signals coincide, within a certain interval specified by the anchor time counter 10 into one of the counters - accumulators receive a larger number of code points than any other drive counters, which receive impulses, will be formed when the reference signal coincides with the noise one. In this case, as can be seen from the graph in FIG. 2, the higher the signal-to-noise ratio is, the less is the need for the hcmsn to determine with a predetermined probability of the storage counter that corresponds to the number of the time interval in which the desired signal is located. In accordance with this, the inputs of the CNtecu signal-to-noise analysis circuit 13 from the intermediate outputs of the nvplkk 10 time counting circuit are consistently authentic KCiMnH ,. (fig. 3i), COO1 corresponding to the time intervals necessary to determine the counter-accumulator at the selected threshold values of cigar / noise. At certain time intervals, commands are received at the j / right INPUTS of the signal / noise analysis circuit 13.

The intermediate outputs of the drive accumulators are determined by a pair of values that correspond to the previously selected discrete gates.

signal to noise ratio values. The coincidence (Fig. A) of the pulse from the output of one of the adders of the intermediate outputs 12 (Fig. 36, Sv, Dz) with the corresponding time interval specified in it (Fig. Over - tjjtj.ts) signals the posterior value of the signal / noise ratio which is recorded and stored in the control circuit 11. The same signal (FIG. S) is fed through the device 8 combining the multichannel output signals

counters drives to the command device 5, with which the controlled frequency divider 9 is set in accordance with the detected signal. The signals from the command device 5 also prepare the elements

devices of secondary signal processing 2 to the subsequent step of searching for signals of an amplitude-manipulated (AM) program. At the same time, the capacities of the polling counter 6 and the time counter U (and, therefore, in {) the binding rate) are set via cxe.viy of control 11 in accordance with the signal-to-noise ratio recorded at the first binding stage. In the subsequent stages of the attachment, the device operates mainly as a prototype.

At the interval of time specified by the anchor time counter 10, the device for preprocessing signal 1 is turned off and the polling counter 6 is turned on, by means of which a counter-accumulator is determined in which the number of code units exceeds the calculated value of the accumulation threshold. At the same time, the number of the account of the storage accumulator in which the threshold is exceeded corresponds to the number

the time interval in which the desired signal of the AM program is located. The signal from the output of the dedicated storage counter through the device combining the output signals 8 is fed to the command device 5, occurs

installation of a controlled frequency divider 9 and a command is issued to move to the next search stage.

Claims (1)

The difference is that the capacities of the counting time of the anchor 10 and the polling 6 are changed by the control circuit 11 according to the signals of the command device 5 in accordance with the a posteriori signal-to-noise ratio stored in the first step of the linking and stored in the control circuit 11. An invention of an automatic assignment of time scales to precise time sipils with a known carrier phase, comprising a reference oscillator, a time keeper, a radio receiver, a sampling circuit and a carrier frequency preprocessing circuit connected to the secondary signal processing circuit of the envelope, consisting of a controlled splitter, an anchor frequency switch, a time counter, a polling counter and a serially connected switch JAN OB, counters, accumulators, output combining circuits x signals of drive counters and command block, characterized in that. In order to accelerate the coupling with signal-to-noise ratios, greater than the limiting ones, a signal-to-noise ratio analysis circuit, accumulator intermediate outputs accumulators and a control circuit are introduced in ycrpoiiCTBo, the intermediate outputs of the accumulator counters are connected to the signal inputs of the analysis circuit via accumulators signal-to-m ratios, the control inputs of which are connected to the intermediate outputs of the time counter, and Bbixojiii - to one of the inputs of the circuit for combining the output signals of the drive counters and the input of the control circuit, W The input of which is connected with the output of the command block, and the output with the control inputs of the time and poll counters. ish 1 .L g t Fi & .З