RU1800426C - Device for structural index characteristic determining for atmospherical refraction - Google Patents

Abstract

Usage: the invention relates to meteorology. The essence of the invention lies in the fact that in the device comprising an atmosphere scanning sensor, a control unit, a video signal converter and a storage unit, a switch connected to a PC interface unit, an address corrector and a serial filter, a television signal conditioner and a video control unit are additionally introduced. 5 ill.

Description

The invention relates to meteorology and can be used in systems for collecting, analyzing and visualizing information about the state of the atmosphere.

The purpose of the invention is to increase accuracy by taking into account a variety of changes in the amplitude and width of the spectrum of the radiation of the source.

In FIG. 1 shows a block diagram of a device; in FIG. 2 - switch; in FIG. 3 - control unit; in FIG. 4 - signal filter; in FIG. 5 - mating unit.

The device for analyzing atmospheric characteristics comprises inputs 1 for an atmosphere scanning sensor, a video signal converter 12, a switch 3, a storage unit 4, a control unit 5, an address corrector 6; a signal filter 7, a television signal driver 8, a video monitoring unit 9, and an interface unit 10 for connecting to an external device.

An atmospheric scanning sensor is connected to the inputs 1, which contains in series a lens, a lens, a prism that splits the input

a beam of atmospheric radiation into four beams, forming four channels of information transmission, which through an interference filter are connected to the inputs of photoelectronic amplifiers, the outputs of which through an analog switch are connected to one channel for transmitting information with temporary channel multiplexing. The switch output is the sensor information output. The sensor also includes an assembly for scanning the sensor scanner in one plane, the output of which is the output of the synchronization signal of the scanner extreme position.

The video signal converter 2 between the input and output has a series-connected amplifier, an analog-to-digital converter and a register of ten bits, and the second input of the converter 2 is connected to an analog-to-digital converter.

Switch 3 contains the first 11, second 12 and third 13 key nodes (bit keys between input and output), inverter 14. Each of the nodes has a dec

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bit parallel input, output, which are combined by input, output, switch buses, and control input, which are connected via the bus to the interface unit 10.

In FIG. 2-5, the inputs and outputs of the nodes are indicated by the numbers of the blocks in the drawing of FIG. 1 with which these inputs and outputs are associated.

The memory unit 4 contains four memory sheets according to the number of sensor channels. The format of the memory sheet is 180 elements in a line of 512 lines with a size equal to ten. The outputs of the memory sheets are the outputs of block 4 and are additionally connected to the information inputs of the switch, the output of which is connected through another output of the block 4 to the input of the switch 3. The control input of the switch through the input bus of the block 4 is connected to the output of the node 16 of block 5.

The control unit 5 comprises a synchronizer 15, a recording control unit 16, a write counter 17, a display counter 18, an address switch 19.

The synchronizer 15 is made according to a scheme which comprises a pulse generator with external synchronization, a pulse counter and a driver of clock signals, a driver of signals of horizontal and frame synchronization, connected between the input and outputs. The pulse counter has an additional output of data recording frequency signals, which is connected to nodes 16 and 17.

The recording control unit 16 contains a decoder, the inputs of which are connected to the synchronizer 15, and the output is the output of the recording signals of the node 16 and another decoder, the inputs of which are connected to the outputs of the synchronizer 15 and the output of the register 23 of block 10, and the outputs are the output of the control signal confirmation of readiness and control signal of the switch unit 4.

The address corrector 6 is made in accordance with a parallel adder circuit of two ten-bit codes coming via two ten-bit buses from block 5. The adder control input is connected to the output of node 16 of block 5.

The filter 7 contains adders 20-22, the inputs of which are connected by buses to the individual memory sheets of unit 4, and the outputs are connected to the outputs of the filter.

Shaper 8 of the television signal contains connected between inputs and output of three digital-to-analog converters, the outputs of which are connected to three inputs of the mixer. Digital to Analog Clock Inputs

parallel and the fourth input of the mixer is connected to the outputs of the synchronizer 15 of the block 15.

The pairing unit 10 comprises a register 23

instructions, data register 24, register 25 row and column addresses and communications indicated in the drawing.

The principle of operation of the device according to the invention consists in a converter of analog signals of the four parts of the radiation spectrum arriving with a temporary seal into a digital data code, sequentially accumulating data in the television frame and visualizing the accumulated data in a color image.

The device operates as follows.

The video signal from the information output of the scanning sensor through the input 1 of the device is fed to the input of the converter 2. In the converter, the video signal is amplified, converted into a digital ten-digit code and through the register

sequentially in the form of parallel codes (digital data) is supplied to the output of the converter 2. Then, through the open key node 11 of the switch 3, the digital data is fed to the input of the storage

unit 4 for recording and storing them.

Digital data is recorded sequentially in the first then in the second, third and so on until the last memory cell of all sheets of storage

block 4, this ends the first period of scanning the atmosphere. Second, third, etc. scanning periods are characterized by updating digital data in all cells of block 4 above

order them in this block.

On each of the sheets of the storage unit 4, information is stored on the state of the atmosphere received by the sensor in the corresponding part of the radiation spectrum of the source. The data are read and sent to the outputs of the storage unit 4 by parallel codes simultaneously from all four memory sheets.

To visually display information about the state of the atmosphere, the reading of digital1 data from block 4 and further operations on them are carried out in accordance with the parameters of the selected television standard.

The process of writing and reading data is controlled by block 6, taking into account the sensor clock signal, which enters block 5 through the inputs 1 of the device at the extreme position of the scanner. The signals of the end position of the scanner are fed to the inputs of the nodes

15, 17 of the control unit. The synchronizer 15 extracts clock signals for controlling the operation of blocks 2, 8 and 18, and horizontal and frame signals for block 8 and nodes 16 and 18 of block 5, as well as a data recording frequency signal for nodes 16 and 17.

The write control unit 16 generates a control signal for the address switch 19 and address corrector 6, as well as a write and control signal for the switch of unit 4, which are supplied via the bus to the storage unit 4, and a readiness confirmation signal, which is supplied to the unit 10.

In the information recording mode, the counter 17, under the influence of the input signals, generates memory addresses of the unit 4, into which data values are recorded simultaneously with the scanning of the atmosphere. In this case, the column addresses are sent to block 4 through the switch 19, and the row addresses through the switch 19 and the address corrector 6. At the time of data recording, the control signal of node 16 switches the corrector 6 to work in the recording address translation mode.

In the reading mode for displaying information, the counter 18, under the influence of input signals, sequentially generates memory cell addresses in accordance with the speed of the selected television standard. In this case, the column addresses go to block 4 through switch 19, and the row addresses go through the switch and address corrector 6. In order to decouple the time of recording and reading information, as well as reduce interference, the data are written to unit 4 during the quenching pulses of the television standard.

The line address corrector 6 ensures that the information is read in such a way that the latest information is always located in a certain part of the screen of the video control unit 9, for example, on the last line of the raster. This ensures the clarity of the sequence of events recorded by the sensor,

Since the memory capacity of block 4 is limited to one frame of the television standard, the data stored in block 4 is updated with the recording period of the frame. As a result of this, in block 4, part of the updated data of the current recording frame and part of the data of the previous recording frame are constantly stored, moreover, at the data update boundary, the time between recording is equal to the recording period of the frame. In order to ensure a clear reading sequence of the data in the television frame for visualization, the corrector 6 starts the beginning of the previous television frame with a data update boundary by adding the current line address of the television frame coming from the counter 18 through the switch 19 to the address of the line to which the data coming from counter 17. Addition of addresses in the corrector provides data shift of the previous frame to its beginning line by line with the speed of writing data to block 4.

The filter 7 corrects the digital data that comes from the first three sheets of memory through the adders 20-22, with codes stored in the fourth memory sheet of unit 4, for example, corresponding to background atmospheric noise. This ensures a reduction in the errors in the data on the state of the atmosphere.

Shaper 8 converts the digital data codes into an analog signal, mixes the horizontal and frame synchronization signals into it, forming the structure of the full television signal of the selected television standard.

Atmospheric observation information is displayed on the screen of the video control unit 9 with a color picture tube.

In this case, the image of the components of the analysis, as it were, slides across the screen along the frame and is completely updated during the period of recording the frame in the storage unit 4.

The interface unit 10 communicates with the external device, for example, a personal electronic computer (not shown), to increase the accuracy of the analysis and possibly process the results of the analysis of the state of the atmosphere.

The register 23 of instructions is used to store a frame of instructions defining the pairing mode, for example, reading information from block 4 through an open key node 13. and register 24 on a PC or writing information from a PC through register 24, key node 12 to block 4.

When writing data to a PC, the storage unit switch 4 first outputs all ten-bit data codes stored in the first, then in the second, third, and fourth sheets of unit 4. The codes of these data are sent to register 24 through the open node 12 of switch 3 and then to the PC for recording. Nodes 11 and 13 in this case are closed by a signal from the register 23 of block 10.

The register 25 fixes the addresses of the cells of the storage unit 4 when writing or reading data on a command from the PC through the register 23.

Compared with the prototype, the proposed device has a higher

accuracy of the analysis of atmospheric parameters, since the analysis is performed simultaneously in four parts of the radiation spectrum, and visualization is carried out in a color image.

The proposed device with higher accuracy provides operational control, taking into account the retrospective of observations.

The device provides the possibility of interfacing with external devices for processing the accumulated data, entering into the proposed device a priori and other data for correcting the accumulated data or displaying them on the screen of the video monitoring unit. This increases the productivity of the device in atmospheric studies.

Claims (1)

SUMMARY OF THE INVENTION A device for analyzing the structural characteristic of the refractive index of the atmosphere, comprising a video signal sensor, a control unit with input and output, an interface unit with secondary equipment, and an analysis circuit, characterized in that, in order to improve accuracy, the analysis circuit is designed as a video signal converter with first and second inputs, a switch with first and second inputs, a memory unit with first, second, third inputs and first and second outputs, a signal filter, a signal conditioner with first and second ith inputs, video control unit, address corrector with first, second and third inputs. the unit for interfacing with the secondary equipment is made with the first and second coupled input-output, and the control unit additionally contains a second, third, fourth and fifth outputs and a combined input-output, while the first input of the video signal converter is connected to the video signal sensor, the second input of the video converter is connected to the second output control unit, the output of the video signal converter is connected to the first input of the switch, the second input of which is connected to the first output of the memory unit, the first, second and third inputs of which connected respectively to the output of the switch, the first output of the control unit and the output of the address corrector, and the second output of the memory unit is connected to the input of the signal filter, the output of which is connected with the first input of the TV signal shaper, the second input of which is connected to the fifth output of the control unit, and the output is connected to the input of the video control unit, the input of the control unit is connected to the video signal sensor, the combined input-output of the control unit is connected to the combined third output-input of the interface unit secondary equipment, the third and fourth outputs of the control unit are connected respectively to the first input and the combined second and third inputs of the address corrector, the second combined input-output of the interface unit with secondary equipment connected to combined output-input of the switch. FIG. 5