6results about "Pulse conversion" patented technology

The application discloses a kind of based on deep neural network's Morse code signal decoding method, comprising the following steps: S1, model training stage: the training data set comprising Morse code signal sample and corresponding label is constructed;Design deep neural network architecture, utilize training data set to optimize network weight, generate Morse code signal decoding model: comprising the following steps: S1.1, signal sample is generated;S1.2, model training;S2, real-time decoding stage: S2.1, STFT conversion;S2.2, signal segmentation;S2.3, data normalization;S2.4 is obtained by model inference Multi-channel sentence-level decoding result;S2.5 is obtained by code stream processing Multi-channel continuous decoding result.By the above mode, the present application can realize the end-to-end decoding of multiple Morse code signals simultaneously by combining time-frequency conversion with deep neural network, effectively solving the problem of continuous decoding of Morse code signals with different code rates in complex electromagnetic background environment.

This invention provides a jitter generation circuit and a jitter propagation and tolerance measurement circuit, relating to the field of jitter injection and detection technology. The jitter generation circuit includes: an interface circuit for receiving a target code pattern and a target jitter; a sequence calculation module for calculating the injected jitter code pattern based on the target code pattern and the target jitter; a sampler for discretizing the flipped time series to obtain a discretized time series and generating an output sequence; and a clock module for generating a clock signal for the sampler. The jitter propagation and tolerance measurement circuit includes: a transmitter for generating and transmitting a jittered signal; a circuit under test for receiving the jittered signal and generating an output signal; a receiver for calculating the jitter propagation and tolerance; and a clock module for generating a clock signal. The advantages of this invention are that it overcomes the shortcomings of existing jitter injection schemes, such as poor versatility and inflexibility, and also improves the shortcomings of existing index measurement schemes, such as poor economy and lack of integration.

The application relates to the technical field of digital information transmission, and discloses a Morse code encoding and decoding method and system based on artificial intelligence, which comprises the following steps: converting text information into an initial dot-dash symbol sequence according to a standard Morse code mapping table, and collecting channel characteristic parameters to input a light decision tree model to determine a time sequence characteristic weight vector; optimizing the initial dot-dash symbol sequence to generate an optimized dot-dash symbol sequence; calculating an absolute sending time length, combining a multipath fading coefficient of a channel to dynamically adjust sending power and waveform envelope parameters, and generating an encoding signal; demodulating a received signal to obtain a time sequence characteristic weight vector used by a sending end, performing envelope detection on a baseband signal, and obtaining a dot-dash symbol sequence according to the time sequence characteristic weight vector, and converting to obtain decoded text information according to a standard Morse code mapping table. The application solves the encoding and decoding problems of the Morse code in a dynamic environment, and can run on an edge device.

The application provides a mud pulse data coding and decoding method, device and computer equipment, and relates to the field of measurement while drilling. The coding method comprises the following steps: obtaining an original value and a combination code table parameter pre-used by the original value; searching for a combination code table associated with the combination code table parameter in a combination code dictionary or recursively operating to obtain a combination code table satisfying a constraint by taking the combination code table parameter as the constraint; when the recursive operation cannot obtain the combination code table satisfying the constraint, generating an interactive instruction to update the combination code table parameter pre-used and jump to trigger the execution of the previous step; the combination code table in the combination code dictionary is a combination code table satisfying the constraint obtained by recursive operation by taking the combination code table parameter associated with the combination code table as the constraint; and a combination code corresponding to the original value is matched. In the above method, the combination code table is quickly generated by using the recursive principle, so that the coding and decoding efficiency of the combination code is improved.

Provided are a method for converting a time service signal, an apparatus for converting a time service signal, and a computer-readable medium. The method may include: obtaining, by a conversion unit according to a first time service signal, a second initial time service signal, the first time service signal and the second initial time service signal corresponding to a same time, and outputting the second initial time service signal; and receiving, by a logic OR gate, a trigger signal of the first time service signal and the second initial time service signal, and outputting a second time service signal. The first time service signal has a first format, the second initial time service signal and the second time service signal each have a second format, on time points of the trigger signal, the second initial time service signal, and the second time service signal are all rising edges thereof.