4 results about "Microsecond" patented technology

This invention discloses a method and system for determining the current time using radio observations of multiple pulsars, comprising the following steps: S1. Correcting the deviation between the local clock time and the absolute time to within a set threshold; S2. Selecting N radio pulsars, where N is greater than or equal to 4, and continuously observing the selected radio pulsars using a radio telescope to obtain observation data; S3. Processing the observation data to generate the observed pulse profile; calculating the pulsar pulse phase φ. i S4. Calculate the standard pulse profile P k With the observed pulse profile P' k The relative phase deviation δφ between i Calculate the relative phase deviation δφ with error S5. i With phase φ i deviation Δφ i S6. The deviation δT between the telescope's local clock time and absolute time is calculated, thereby determining the absolute time. This invention eliminates the need to synchronize the local clock with the absolute time of a certain time standard. It can obtain absolute time with an accuracy on the order of tens of microseconds by analyzing observed pulsars, and significantly reduces calculation time.

The present invention discloses a method and system for quickly measuring the signal delay of a radio telescope, the method comprising the following steps: setting periodic noise parameters and recording baseband data; calculating the standard deviation of the upper half of each cycle and the standard deviation of the lower half of each cycle according to the period of the noise, calculating the standard deviation ratio of M cycles, and taking the average value; increasing the start time offset until one noise cycle, respectively calculating the average standard deviation ratio of M cycles; fitting the curve of the average standard deviation and the start time offset to obtain the accurate time delay; comparing historical data, analyzing the differences and causes. The present technology can realize the accurate measurement of the signal delay of a radio telescope. Compared with the previous method using power spectrum, the present method has a very short data recording time, can be performed during the telescope source change period, and will not occupy the normal working time of the telescope; the present method is not affected by radio interference, and the measurement accuracy can be improved to 0.1 microseconds.

The invention relates to a novel high-speed gallium oxide solar-blind ultraviolet photoelectric detector and a preparation method thereof, and the detector comprises an amorphous gallium oxide thin film layer which is provided with a vertically layered crystal structure. The vertically layered crystal structure comprises a top layer, a middle layer and a bottom layer, the thickness of the top layer is 3-5nm, and the crystallinity index is 70-80%; the thickness of the middle layer is 0.1-0.3 nm, and the crystallinity index of the middle layer is 50-60%; the thickness of the bottom layer is 95-97 nm, and the crystallinity index of the bottom layer is 20-25%. The detector is a device with spatial isolation carrier generation and transmission channels, and solves the "Response Speed (RS)" difficulty. According to the detector, the rising time is smaller than or equal to 2.2 ms, the decay time is smaller than or equal to 40 microseconds, the spectral response rate is larger than or equal to 312.6 A.W <-1 >, and the detection rate is larger than or equal to 1.7 * 10 < 14 > Jones.

This invention discloses a high-precision waveform curve support method, system, device, and storage medium based on ScottPlot, comprising: determining the base time of waveform data points; calculating the time interval by subtracting the base time from the original time of the waveform data points, converting the time interval into a total number of milliseconds, and using the total number of milliseconds as the millisecond offset; using the millisecond offset as the X-axis coordinate data source, and combining it with the original ordinate value of the waveform data points to draw the waveform curve in the ScottPlot chart frame; upon receiving a trigger command to display the real time of the waveform data points, obtaining the millisecond offset of the current data point on the X-axis, adding the millisecond offset to the base time to calculate and reconstruct the real time for display. This enables ScottPlot to support the display of high-precision curves, with precision down to the microsecond or even nanosecond level.