CN110274698B - Performance detection device for repetition frequency coding pulse laser - Google Patents
Performance detection device for repetition frequency coding pulse laser Download PDFInfo
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- CN110274698B CN110274698B CN201910620331.8A CN201910620331A CN110274698B CN 110274698 B CN110274698 B CN 110274698B CN 201910620331 A CN201910620331 A CN 201910620331A CN 110274698 B CN110274698 B CN 110274698B
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims description 19
- 238000013500 data storage Methods 0.000 claims description 14
- 230000003993 interaction Effects 0.000 claims description 11
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- 238000001914 filtration Methods 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J11/00—Measuring the characteristics of individual optical pulses or of optical pulse trains
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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Abstract
The invention discloses a performance detection device of repetition frequency coding pulse laser, which comprises a laser target indicator and a performance detection device connected with the laser target indicator; the performance detection device consists of a pulse laser acquisition front end, a main control unit and an external computer; the output end of the pulse laser acquisition front end is electrically connected with the main control unit; the main control unit is in communication connection with an external computer; the performance detection device of the repetition frequency coding pulse laser can detect the emission of the laser target indicator in real time, does not need to modify the structure of the laser target indicator and does not influence the normal operation of equipment, and the device is simply and conveniently installed and is convenient and fast to operate by only connecting the device with the laser target indicator.
Description
Technical Field
The invention relates to a performance detection device for repetition frequency coding pulse laser, and belongs to the technical field of laser testing.
Background
In modern warfare, precision guided weapons are rapidly evolving, wherein laser end guided weapon systems are rapidly evolving in ground cannons and airborne platforms; in a laser terminal guided weapon system, a laser target indicator emits a laser pulse sequence with high-energy repetition frequency coding to irradiate an enemy target, a laser guided gun (explosion) bullet guide head captures echoes, and the shots are controlled to fly to the target according to a certain guidance rule; in the whole weapon system, a laser target indicator is used as a signal source of a guiding target, which is a key component of importance, and whether the performance index of the emitted laser meets tactical technical requirements is a main factor for determining the hit precision of the shell and is also a main basis for analyzing the guiding effect.
At present, in a laser terminal guided weapon system, a common laser performance detection method is to directly place a photoelectric detector on the right opposite side of emitted laser to receive a laser signal, and test by adopting a method of synchronously observing waveforms by a high-speed oscilloscope; the method shields the transmission channel of the repetition frequency coding pulse laser, can only carry out technical inspection on parameters such as coding precision, pulse energy and the like of the laser in a non-working state, and cannot realize real-time monitoring on the performance parameters of the repetition frequency coding pulse laser under actual combat conditions, so that the problems of pulse energy reduction, pulse deletion, out-of-tolerance coding precision and the like of the laser emitted by the laser target indicator are difficult to find, and meanwhile, no corresponding technical means is adopted to store and record all information of the coding laser emitted each time completely, so that a series of problems are brought to analyzing the guidance effect of the laser terminal guidance system.
Disclosure of Invention
In order to solve the problems, the invention provides a performance detection device for a repetition frequency coding pulse laser, which can detect the performance of the laser emitted by a laser target indicator in real time, does not need to modify the structure of the laser target indicator, does not influence the normal work of equipment, and is simple to install and convenient and quick to operate.
The invention discloses a performance detection device of repetition frequency coding pulse laser, which comprises a laser target indicator and a performance detection device connected with the laser target indicator; the performance detection device consists of a pulse laser acquisition front end, a main control unit and an external computer; the output end of the pulse laser acquisition front end is electrically connected with the main control unit; the main control unit is in communication connection with an external computer, the pulse laser acquisition front end is mainly used for receiving and acquiring the repetition frequency coding pulse laser from the laser target indicator, filtering, converging, amplifying, demodulating and the like on the acquired laser signals, detecting the starting and ending signals of each laser pulse, and then sending the characteristic information of each pulse laser to the main control unit; the main control unit mainly comprises a data acquisition processing module, a data storage module and a man-machine interaction module, and when the main control unit is connected with the pulse laser acquisition front end, parameters such as the number of pulses, pulse intervals, pulse frequency, frequency precision, period precision and the like emitted by the laser target indicator can be detected according to pulse laser characteristic information received by the pulse laser acquisition front end; the external computer is mainly used for storing or displaying the measurement data for later data analysis and inspection;
the pulse laser acquisition front end comprises a filtering focusing lens assembly, a photoelectric detector arranged at the rear side of the filtering focusing lens assembly, and a signal processing circuit electrically connected with the photoelectric detector, wherein when the laser target indicator is in a working state, the laser target indicator emits a repetition frequency coding laser pulse, and the laser target indicator is influenced by atmospheric scattering when being transmitted in the atmosphere; the acquisition of the coded pulse laser signals is based on the scattering effect of the laser pulses transmitted in the atmosphere, the front end of the pulse laser acquisition is assembled at the side direction of the emergent laser pulses, and the weak scattering signals of the repetition frequency coded laser pulses are acquired; after the laser pulse of the laser target indicator is scattered by the atmosphere, scattered signals of the laser pulse are converged on the photoelectric detector through the optical filtering and focusing lens component;
the front end of pulse laser acquisition comprises an optical filter, a converging lens, a photoelectric detector, an amplifier and a demodulator; after the laser pulse emitted by the laser target indicator is scattered by the atmosphere, scattered signals are converged on a photosensitive surface of the photoelectric detector through the optical filter and the converging lens, a series of processing such as amplification, denoising, shaping and the like of weak signals are performed, starting and ending signals of each laser pulse are detected, and then characteristic information of each pulse laser is sent to the main control unit; the optical filter has high transmissivity to 1.064 mu m laser emitted by the laser target indicator, and can filter stray light out of a 1.064 mu m wave band range; the photoelectric detector adopts a GT101 type silicon detector, the peak response wavelength region can cover 1.064 mu m of repetition frequency coding laser pulse, the response rate is 0.45/mu W, namely, 0.45 mu A photocurrent can be generated when 1 mu W laser echo is input;
the main control unit consists of a singlechip, a data acquisition and processing module, a data storage module and a man-machine interaction module, and the data acquisition and processing module, the data storage module and the man-machine interaction module are respectively and electrically connected with the singlechip; the data acquisition processing module comprises a counter and a time interval determinator; the counter is electrically connected with the time interval measuring device; the time interval measuring device is respectively and electrically connected with the singlechip and the data storage module; the data storage module comprises a memory; the memory is electrically connected with the singlechip; the man-machine interaction module comprises a keyboard, a display module and a communication interface circuit; the keyboard, the display module and the communication interface circuit are respectively and electrically connected with the singlechip; the communication interface circuit is connected with an external computer through a communication cable, the counter is completed by adopting a common counter chip 54LS393, the time interval tester is completed by adopting a CPLD programmable logic device EPM7128, three-level cascade pulse counting is written in through internal programming, high-frequency clock pulse is counted in the internal after frequency division, the time measurement of pulse intervals is realized, the counted and measured time interval data are sent to a memory for storage, and the master control unit is controlled by a single chip microcomputer to realize the whole machine time sequence logic and manage an external keyboard, a display module and the communication interface circuit.
Further, the pulse laser acquisition front end is assembled at the bottom end of a laser exit channel of the laser target indicator; the pulse laser acquisition front end is electrically connected with a counter of the main control unit through a connecting cable.
Further, the laser target indicator is electrically connected with a battery pack, and the battery pack is electrically connected with the main control unit through a power cable.
Further, the main control unit is in communication connection with an external computer through a communication cable.
Further, the filter and focusing lens assembly consists of a filter and a focusing lens; after the laser pulse of the laser target indicator is scattered by the atmosphere, scattered signals of the laser pulse are converged on the photosensitive surface of the photoelectric detector through the optical filter and the converging lens.
As a preferred embodiment, the photodetector is a GT101 type silicon detector, the peak response wavelength region of which covers a 1.064 μm repetition frequency coded laser pulse, and the response rate is 0.45/mu W.
Further, the signal processing circuit includes an amplifier and a demodulator.
Still further, the amplifier is a two-stage amplifier, which consists of a high-frequency, low-noise preamplifier and a gain-controllable video amplifier.
Further, the counter is a counter chip 54LS393.
Further, the time interval determinator is a CPLD programmable logic device EPM7128.
Compared with the prior art, the performance detection device of the repetition frequency coding pulse laser transmits coding laser pulses, and the laser target indicator transmits the coding laser pulses, and after receiving laser pulse signals at the pulse laser acquisition front end, the laser pulse signals are converted into electric signals and sent to a counter and a time interval determinator of a main control unit; the laser performance emitted by the laser target indicator can be detected in real time, the structure of the laser target indicator does not need to be modified, the normal operation of equipment is not affected, and the device is simply and conveniently installed and is convenient and fast to operate as long as the device is connected with the laser target indicator.
Drawings
Fig. 1 is a schematic block diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the pulse laser acquisition front end structure of the present invention.
Fig. 3 is a schematic block diagram of the structure of the main control unit of the present invention.
Fig. 4 is a schematic block diagram of a connection structure of a laser target indicator of the performance detection apparatus for repetition frequency coded pulse laser according to the present invention.
The components in the drawings are marked as follows: the laser target indicator comprises a 1-laser target indicator, a 2-pulse laser acquisition front end, a 3-main control unit, a 4-external computer, a 5-filtering focusing lens component, a 51-optical filter, a 52-focusing lens, a 6-photoelectric detector, a 7-signal processing circuit, a 71-amplifier, a 72-demodulator, an 8-singlechip, a 9-data acquisition processing module, a 91-counter, a 92-time interval determinator, a 10-data storage module, a 101-memory, an 11-man-machine interaction module, a 111-keyboard and display module, a 112-communication interface circuit, a 12-battery pack, a 13-communication cable, a 14-connection cable and a 15-power cable.
Detailed Description
The performance detection device of the repetition frequency coded pulse laser as shown in fig. 1 to 4 comprises a laser target indicator 1 and a performance detection device connected with the laser target indicator 1; the performance detection device consists of a pulse laser acquisition front end 2, a main control unit 3 and an external computer 4; the output end of the pulse laser acquisition front end 2 is electrically connected with the main control unit 3; the main control unit 3 is in communication connection with an external computer 4;
the pulse laser acquisition front end 2 comprises a filter focusing lens assembly 5, a photoelectric detector 6 arranged on the rear side of the filter focusing lens assembly 5, and a signal processing circuit 7 electrically connected with the photoelectric detector 6; after the laser pulse of the laser target indicator 1 is scattered by the atmosphere, scattered signals of the laser pulse are converged on the photoelectric detector 6 through the filter focusing lens assembly 5;
the main control unit 3 consists of a single chip microcomputer 8, a data acquisition and processing module 9, a data storage module 10 and a man-machine interaction module 11, and the data acquisition and processing module 9, the data storage module 10 and the man-machine interaction module 11 are respectively and electrically connected with the single chip microcomputer 8;
the data acquisition and processing module 9 comprises a counter 91 and a time interval determinator 92; the counter 91 is electrically connected to the time interval measuring device 92; the time interval measuring device 92 is respectively and electrically connected with the singlechip 8 and the data storage module 10;
the data storage module 10 includes a memory 101; the memory is electrically connected with the singlechip 8;
the man-machine interaction module 11 comprises a keyboard and display module 111 and a communication interface circuit 112; the keyboard and display module 111 and the communication interface circuit 112 are respectively and electrically connected with the singlechip 8; the communication interface circuit 112 is connected to the external computer 4 via a communication cable 13.
The pulse laser acquisition front end 2 is assembled at the bottom end of a laser emergent channel of the laser target indicator 1; the pulse laser acquisition front end 2 is electrically connected with a counter of the main control unit 3 through a connecting cable 14.
The laser target indicator 1 is electrically connected with a battery pack 12, and the battery pack 12 is electrically connected with the main control unit 3 through a power cable 15.
The main control unit 3 is in communication connection with an external computer 4 through a communication cable 13.
The filter and focusing lens assembly 5 consists of a filter 51 and a focusing lens 52; after the laser pulse of the laser target indicator 1 is scattered by the atmosphere, the scattered signal is converged on the photosensitive surface of the photodetector 6 through the optical filter 51 and the converging lens 52.
The photodetector 6 is a GT101 type silicon detector, and the peak response wavelength area of the photodetector covers a 1.064 mu m repetition frequency coding laser pulse, and the response rate is 0.45/mu W.
The signal processing circuit 7 includes an amplifier 71 and a demodulator 72.
The amplifier 71 is a two-stage amplifier, which is composed of a high-frequency, low-noise preamplifier and a gain-controllable video amplifier.
The counter 91 is a counter chip 54LS393.
The time interval determinator 92 is a CPLD programmable logic device EPM7128.
When the performance detection device for the repetition frequency coding pulse laser is assembled, before the performance of the repetition frequency coding laser pulse is detected, firstly, the pulse laser acquisition front end is assembled at the bottom end of a laser exit channel of a laser target indicator, the pulse laser acquisition front end is connected with a counter in a main control unit through a cable, a battery pack is responsible for supplying power to the laser target indicator and the main control unit, and an external computer is connected with a communication interface circuit of the main control unit through a communication cable;
when the laser target indicator works, the laser target indicator emits coded laser pulses, the pulse laser acquisition front end receives laser pulse signals and converts the laser pulse signals into electric signals, and the electric signals are sent to the counter and the time interval measuring device of the main control unit; the counter counts the input laser pulse and the irradiation period, the time interval measuring device measures the time interval of the coded laser pulse, the counting result and the time interval measuring data are transmitted to the memory, the singlechip controls the working time sequence of the whole main control unit, the data in the memory are instantly displayed through the keyboard and the display module of the main control unit, or the measured data are transmitted to the external computer through the communication cable to be stored for later analysis and inspection.
The above embodiments are merely preferred embodiments of the present invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (8)
1. The performance detection device of the repetition frequency coding pulse laser comprises a laser target indicator and a performance detection device connected with the laser target indicator; the method is characterized in that: the performance detection device consists of a pulse laser acquisition front end, a main control unit and an external computer; the output end of the pulse laser acquisition front end is electrically connected with the main control unit; the main control unit is in communication connection with an external computer;
the pulse laser acquisition front end comprises a filter focusing lens assembly, a photoelectric detector arranged at the rear side of the filter focusing lens assembly, and a signal processing circuit electrically connected with the photoelectric detector; after the laser pulse of the laser target indicator is scattered by the atmosphere, scattered signals of the laser pulse are converged on the photoelectric detector through the optical filtering and focusing lens component;
the main control unit consists of a singlechip, a data acquisition and processing module, a data storage module and a man-machine interaction module, and the data acquisition and processing module, the data storage module and the man-machine interaction module are respectively and electrically connected with the singlechip;
the data acquisition processing module comprises a counter and a time interval determinator; the counter is electrically connected with the time interval measuring device; the time interval measuring device is respectively and electrically connected with the singlechip and the data storage module;
the data storage module comprises a memory; the memory is electrically connected with the singlechip;
the man-machine interaction module comprises a keyboard, a display module and a communication interface circuit; the keyboard, the display module and the communication interface circuit are respectively and electrically connected with the singlechip; the communication interface circuit is connected with an external computer through a communication cable;
the pulse laser acquisition front end is assembled at the bottom end of a laser emergent channel of the laser target indicator; the pulse laser acquisition front end is electrically connected with a counter of the main control unit through a connecting cable;
the filter focusing lens component consists of a filter and a converging lens; after the laser pulse of the laser target indicator is scattered by the atmosphere, scattered signals of the laser pulse are converged on the photosensitive surface of the photoelectric detector through the optical filter and the converging lens.
2. The performance detection apparatus for repetition-frequency coded pulse laser according to claim 1, wherein: the laser target indicator is electrically connected with a battery pack, and the battery pack is electrically connected with the main control unit through a power cable.
3. The performance detection apparatus for repetition-frequency coded pulse laser according to claim 1, wherein: the main control unit is in communication connection with an external computer through a communication cable.
4. The performance detection apparatus for repetition-frequency coded pulse laser according to claim 1, wherein: the photoelectric detector is a GT101 type silicon detector, the peak response wavelength region of the photoelectric detector covers a 1.064 mu m repetition frequency coding laser pulse, and the response rate is 0.45/mu W.
5. The performance detection apparatus for repetition-frequency coded pulse laser according to claim 1, wherein: the signal processing circuit includes an amplifier and a demodulator.
6. The performance detection apparatus for repetition-frequency coded pulse laser according to claim 5, wherein: the amplifier is a two-stage amplifier, and consists of a high-frequency low-noise preamplifier and a gain-controllable video amplifier.
7. The performance detection apparatus for repetition-frequency coded pulse laser according to claim 1, wherein: the counter is counter chip 54LS393.
8. The performance detection apparatus for repetition-frequency coded pulse laser according to claim 1, wherein: the time interval determinator is a CPLD programmable logic device EPM7128.
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| FR2654839A1 (en) * | 1989-11-21 | 1991-05-24 | Curie Paris 6 Univ Pierre Mari | Apparatus for studying the stratosphere by laser sounding |
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| JPH11142252A (en) * | 1997-11-13 | 1999-05-28 | Advantest Corp | Measuring apparatus for sampled waveform using optical sampler module |
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| CN210119298U (en) * | 2019-07-10 | 2020-02-28 | 中国人民解放军陆军工程大学 | Performance detection device of repetition frequency coding pulse laser |
-
2019
- 2019-07-10 CN CN201910620331.8A patent/CN110274698B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2654839A1 (en) * | 1989-11-21 | 1991-05-24 | Curie Paris 6 Univ Pierre Mari | Apparatus for studying the stratosphere by laser sounding |
| JPH0943064A (en) * | 1995-05-23 | 1997-02-14 | Advantest Corp | Optic sampler module and sampling waveform measuring apparatus using the same |
| JPH11142252A (en) * | 1997-11-13 | 1999-05-28 | Advantest Corp | Measuring apparatus for sampled waveform using optical sampler module |
| CN202433099U (en) * | 2011-12-30 | 2012-09-12 | 中国人民解放军南京炮兵学院 | Laser parameter detector |
| CN105092208A (en) * | 2014-05-13 | 2015-11-25 | 中国人民解放军军械工程学院 | Lateral laser pulse synchronous detection apparatus |
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