CN112946610B - Multi-parameter simulated laser target simulator - Google Patents
Multi-parameter simulated laser target simulator Download PDFInfo
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- CN112946610B CN112946610B CN202110144577.XA CN202110144577A CN112946610B CN 112946610 B CN112946610 B CN 112946610B CN 202110144577 A CN202110144577 A CN 202110144577A CN 112946610 B CN112946610 B CN 112946610B
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- 238000002834 transmittance Methods 0.000 claims description 14
- 239000013307 optical fiber Substances 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 6
- 238000005315 distribution function Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 10
- 230000001276 controlling effect Effects 0.000 description 6
- 238000011990 functional testing Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
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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
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Abstract
The invention provides a multi-parameter simulated laser target simulator which comprises a laser emitting module, a laser energy control module, a man-machine interaction module, a control circuit module and an energy automatic calculation module, wherein the laser emitting module is used for emitting laser energy; the laser emission module is used for emitting pulse laser with stable energy under the control of the control circuit module to serve as a laser emission source of the whole system; the laser energy control module is used for receiving the digital control instruction of the digital control circuit module and converting the digital control instruction into voltage drive to change the light attenuation amount so as to control the light output energy; the control circuit module is used for taking charge of logic and time sequence control of the system; and the energy automatic calculation module is used for calculating and obtaining the target echo energy according to the parameters input by the man-machine interaction module. The user can obtain the simulated laser echo of the corresponding distance by setting the target distance, so that the user can test and evaluate the equipment conveniently.
Description
Technical Field
The invention relates to the technical field of lasers, in particular to a multi-parameter simulation laser target simulator which is used for sensitivity test, dynamic range test, functional test, anomaly test and the like of laser receiving equipment such as a laser range finder, a laser radar and the like.
Background
In the research and development process of laser receiving equipment such as a laser range finder, a laser radar and the like, sensitivity test, dynamic range test, functional test, anomaly test and the like are critical to research and development. During operation of the laser rangefinder and the lidar, the laser echo energy returned by the target is constantly changing and the change is related to various parameters.
The prior art 1 discloses a 3-40 dB continuously adjustable laser target/interference simulator system, a circular adjustable attenuator is added in a laser target simulator, the circular adjustable attenuator is plated with a broadband dimming film, the optical density can be linearly changed by the rotation of a disc, the optical density is adjusted by a stepping motor, and the change of the output energy of the laser target simulator can be changed by the rotation of the disc. The laser target simulator is regulated by adopting a stepping motor, and has low speed and poor precision.
Prior art 2 discloses a power variable analog laser source, which energy adjusts the laser echo by a Variable Optical Attenuator (VOA).
The two target simulators do not establish the corresponding relation between the laser echo energy and the target distance and other multiple parameters, and cannot automatically set the echo energy by setting the actual parameters in the simulation environment, so that the use scene and the use effect are limited.
Disclosure of Invention
Accordingly, it is a primary objective of the present invention to provide a laser target simulator with multiple parameters simulation, so as to partially solve at least one of the above problems.
In order to achieve the above object, as an aspect of the present invention, there is provided a multi-parameter simulated laser target simulator, including a laser emitting module, a laser energy control module, a man-machine interaction module, a control circuit module, and an energy automatic calculation module; wherein,,
the laser emission module is used for emitting pulse laser with stable energy under the control of the control circuit module to serve as a laser emission source of the whole system;
the laser energy control module is used for receiving the digital control instruction of the digital control circuit module and converting the digital control instruction into voltage drive to change the light attenuation amount so as to control the light output energy;
the control circuit module is used for taking charge of logic and time sequence control of the system;
and the energy automatic calculation module is used for calculating and obtaining the target echo energy according to the parameters input by the man-machine interaction module.
The energy automatic calculation module is carried out according to a laser radar equation, and the specific calculation formula is as follows:
wherein P is r For the receiver receiving power, pt is the laser emitting power, K is the beam distribution function, T t For the atmospheric transmittance of the laser to the target, T r For the atmospheric transmittance of the receiver to the target, η t Efficiency, eta, of the laser optical system r For the efficiency of the receiver optical system, D is the effective optical caliber of the laser, S is the target laser section,for the divergence angle of the laser beam, R 1 For the laser to target distance, R 2 For the target-to-receiver distance.
The laser emission module comprises a light emitting diode, a light emitting diode driving circuit and a light emitting diode temperature control circuit.
Wherein the light emitting diode comprises a pulsed laser or a continuous laser.
The LED driving circuit provides driving for the LED to emit continuous or pulse laser, and the LED temperature control circuit is responsible for controlling the internal temperature of the LED.
The laser energy control module comprises a tunable optical attenuator, an analog amplifying circuit and a digital-analog converter.
The adjustable optical attenuator is a voltage control device, and the light attenuation of laser between the input optical fiber and the output optical fiber is controlled by controlling the voltage at two ends of the adjustable optical attenuator; the analog amplifying circuit amplifies the voltage and current of the output voltage signal of the digital-analog converter, and increases the control range and the driving capability; the digital-analog converter converts the digital instruction of the control circuit module into a voltage signal and inputs the voltage signal into the analog amplifying circuit.
The man-machine interaction module adopts a display, a keyboard and a serial port mode to input parameters.
The parameters input by the man-machine interaction module comprise a laser-to-target distance, a target-to-receiver distance, a target sectional area, a laser beam divergence angle, visibility, irradiation energy, laser optical system transmittance and receiver optical system transmittance.
The laser target simulator also comprises a system power supply module for supplying energy to the whole system.
Based on the above technical solution, the laser target simulator of the present invention has at least some of the following advantages over the prior art:
the laser target simulator calculates the energy value of the echo laser at the corresponding distance according to the atmospheric propagation rule of the laser through the distance energy calculation module, and converts the energy value into the attenuation value of the VOA, thereby automatically controlling the emission energy of the laser target simulator. The user can obtain the simulated laser echo of the corresponding distance by setting the target distance, so that the user can test and evaluate the equipment conveniently.
Drawings
Fig. 1 is a schematic diagram of a multi-parameter simulated laser target simulator according to an embodiment of the present invention.
In the above figures, the reference numerals have the following meanings:
1. a laser emitting module; 1-1, an LD driving circuit; 1-2, light emitting diodes (LD); 1-3, LD temperature control circuit; 2. a laser energy control module; 2-1, VOA;2-2, an analog amplifying circuit; 2-3, a digital-to-analog converter; 3. a man-machine interaction module; 4. a control circuit module; 5. an energy automatic calculation module; 6. and a system power supply module.
Detailed Description
In order to enable a laser target simulator to more truly simulate the echo condition of laser after atmospheric transmission, the invention discloses a laser target simulator with variable light emitting energy, which simulates laser echoes under multiple parameters such as targets with different distances, different atmospheric characteristics, different irradiation energy and the like, and simulates the change of laser echo energy along with the different parameters so as to enable the laser echo energy to be similar to the working state of an external field test of tested equipment.
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
The invention provides a laser target simulator capable of automatically setting laser echo energy according to multiple parameters such as target distance, atmospheric characteristics, irradiation energy, target sectional area, laser beam divergence angle and the like, in order to solve the defect that the energy setting and the use habit of the traditional laser target simulator are not consistent and increase the simulation degree of laser echo.
In order to achieve the above purpose, the invention adds an energy automatic calculation module in the laser target simulator, the energy automatic calculation module automatically calculates laser echo energy according to the laser radar ranging equation and the set parameters of target distance, atmospheric characteristics, irradiation energy and the like, and controls the laser energy control part to set the simulated echo, thereby outputting the laser echo energy matched with the set parameters for testing the laser range finder or the laser radar.
The laser echo energy is calculated according to the lidar ranging equation (equation 1).
P r Receiving power (w) for a receiver; p (P) t Transmitting power (w) for the laser; k is a beam distribution function; t (T) t Atmospheric transmittance to the target for the laser; t (T) r Atmospheric transmittance to the target for the receiver; η (eta) t Efficiency for the laser optical system; η (eta) r For receiver optical system efficiency; d is the effective optical caliber (m) of the laser; s is a target laser section (m);divergence angle (rad) of the laser beam; r is R 1 Distance (m) from the laser to the target; r is R 2 For target-to-receiver distance (m);
as shown in fig. 1, the present invention includes a laser emitting section 1, a laser energy control section 2, a man-machine interaction section 3, a control circuit section 4, an energy automatic calculation module 5, and the like.
The laser emitting section 1 is constituted by a light emitting diode (LD) 1-2, an LD driving circuit 1-1, an LD temperature control circuit 1-3, and the like, and functions to emit a pulse laser of stable energy as a laser emitting source of the entire system under the control of the control circuit section 4. The LD driving circuit 1-1 is used for driving the light emitting diode (LD) 1-2 to emit continuous or pulse laser light, the LD temperature control circuit 1-3 is responsible for controlling the internal temperature of the light emitting diode (LD), and the light emitting diode (LD) 1-2 of the laser emitting part 1 selects a pulse fiber laser with the wavelength of 1.064um, or uses pulse or continuous lasers with other wavelengths of 0.532um, 0.905um, 10.6um and the like.
The laser energy control section 2 is constituted by a VOA2-1, an analog amplifying circuit 2-2, a digital-to-analog converter (DAC) 2-3, and a connection optical fiber. The laser energy control section 2 functions to receive a digital control instruction from the digital control circuit section 4 and convert it into a voltage-driven VOA2-1 to change the light attenuation amount, thereby controlling the light output energy. The VOA2-1 is a voltage control device, and the light attenuation of laser between an input optical fiber and an output optical fiber can be controlled by controlling the voltage at two ends of the voltage control device; the analog amplifying circuit 2-2 amplifies the voltage and current of the output voltage signal of the digital-to-analog converter (DAC) 2-3, and increases the control range and driving capability; the digital-analog converter 2-3 converts a digital instruction of the digital control circuit portion 4 into a voltage signal to be input into the analog amplifying circuit 2-2.
The human-computer interaction part 3 adopts a display, a keyboard and a serial port mode to input parameters, the digital control circuit part 4 is a control core of the whole system and is responsible for logic and time sequence control of the system, the parameters input by the human-computer interaction part 3 are transmitted to the energy automatic calculation module 5, and the energy automatic calculation module calculates and obtains target echo energy according to the set parameters by the formula 1.
The system power supply section 6 is responsible for the power supply of the entire system.
The following describes the steps of the invention in one of its preferred examples:
1) The user inputs simulated parameters, such as target cross-sectional area, laser beam divergence angle, visibility, irradiation energy, laser optical system transmittance, receiver optical system transmittance, etc., through the man-machine interaction part 3, and if not set, adopts default values in the laser target simulator;
2) Setting a target distance to be simulated;
3) The energy automatic calculation module 5 calculates echo energy according to the set system parameters and calculates the attenuation value of the VOA to be set according to the echo energy;
4) The digital control circuit section 4 achieves the object by setting the attenuation value of the VOA of the laser energy control section 2.
A laser target simulator of multi-parameter simulation, the laser energy of the laser target simulator can be calculated and set automatically according to various parameters set by users; the laser echo distance energy calculation formula is generated according to the laser atmospheric propagation characteristics and can be reset; parameters in the laser echo distance energy calculation formula can be set through a display, a keyboard and a serial port; the calculation method of the laser echo energy and the distance is calculated by an energy automatic calculation module; the setting parameters include laser-to-target distance, target-to-receiver distance, target cross-sectional area, laser beam divergence angle, visibility, illumination energy, laser optical system transmittance, receiver optical system transmittance, and the like.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the invention thereto, but to limit the invention thereto, and any modifications, equivalents, improvements and equivalents thereof may be made without departing from the spirit and principles of the invention.
Claims (6)
1. The multi-parameter simulation laser target simulator is characterized by comprising a laser emission module, a laser energy control module, a man-machine interaction module, a control circuit module and an energy automatic calculation module; wherein,,
the laser emission module is used for emitting pulse laser with stable energy under the control of the control circuit module to serve as a laser emission source of the whole system;
the laser energy control module is used for receiving the digital control instruction of the control circuit module and converting the digital control instruction into voltage drive to change the light attenuation amount so as to control the light output energy;
the control circuit module is used for taking charge of logic and time sequence control of the system;
the energy automatic calculation module is used for calculating and obtaining target echo energy according to the parameters input by the man-machine interaction module;
the energy automatic calculation module is carried out according to a laser radar equation, and the specific calculation formula is as follows:
wherein P is r For the receiver to receive power, P t For the laser emission power, K is the beam distribution function, T t For the atmospheric transmittance of the laser to the target, T r For the atmospheric transmittance of the receiver to the target, η t Efficiency, eta, of the laser optical system r For the efficiency of the receiver optical system, D is the effective optical caliber of the laser, S is the target laser section,for the divergence angle of the laser beam, R 1 For the laser to target distance, R 2 For target-to-receiver distance;
the parameters input by the man-machine interaction module comprise a laser-to-target distance, a target-to-receiver distance, a target laser section, a laser beam divergence angle, the atmospheric transmittance of the laser to the target and the atmospheric transmittance of the receiver to the target, the laser emission power, the laser optical system efficiency and the receiver optical system efficiency;
the laser energy control module comprises a tunable optical attenuator, an analog amplifying circuit and a digital-analog converter;
the adjustable optical attenuator is a voltage control device, and the light attenuation of laser between the input optical fiber and the output optical fiber is controlled by controlling the voltage at two ends of the adjustable optical attenuator; the analog amplifying circuit amplifies the voltage and the current of the output signal of the digital-analog converter, and increases the control range and the driving capability; the digital-analog converter converts a digital control instruction of the control circuit module into a voltage signal and inputs the voltage signal into the analog amplifying circuit.
2. The laser target simulator of claim 1, wherein the laser emitting module comprises a light emitting diode, a light emitting diode drive circuit, and a light emitting diode temperature control circuit.
3. The laser target simulator of claim 2, wherein the operating state of the light emitting diode comprises a pulse or a continuous.
4. The laser target simulator of claim 2, wherein the led driving circuit provides driving for the led to emit continuous or pulsed laser light, and wherein the led temperature control circuit is responsible for controlling the internal temperature of the led.
5. The laser target simulator of claim 1, wherein the human-machine interaction module inputs parameters using a display, a keyboard, and a serial port.
6. The laser target simulator of claim 1, further comprising a system power module for powering the entire system.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282014A (en) * | 1992-12-11 | 1994-01-25 | Hughes Aircraft Company | Laser rangefinder testing system incorporationg range simulation |
| CN103777186A (en) * | 2013-11-02 | 2014-05-07 | 西安电子科技大学 | Method for calculating near-field radar echo characteristics of moving object based on beam decomposition and local irradiation |
| CN103825192A (en) * | 2014-03-05 | 2014-05-28 | 中国科学院半导体研究所 | Power alterable simulation laser source |
| CN105911529A (en) * | 2016-04-26 | 2016-08-31 | 北京润科通用技术有限公司 | Echo signal simulation method and system as well as echo signal simulator |
| CN107340502A (en) * | 2017-06-12 | 2017-11-10 | 南昌大学 | A kind of incoherent scattering radar analogue echoes method and system based on simulink |
-
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- 2021-02-02 CN CN202110144577.XA patent/CN112946610B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282014A (en) * | 1992-12-11 | 1994-01-25 | Hughes Aircraft Company | Laser rangefinder testing system incorporationg range simulation |
| CN103777186A (en) * | 2013-11-02 | 2014-05-07 | 西安电子科技大学 | Method for calculating near-field radar echo characteristics of moving object based on beam decomposition and local irradiation |
| CN103825192A (en) * | 2014-03-05 | 2014-05-28 | 中国科学院半导体研究所 | Power alterable simulation laser source |
| CN105911529A (en) * | 2016-04-26 | 2016-08-31 | 北京润科通用技术有限公司 | Echo signal simulation method and system as well as echo signal simulator |
| CN107340502A (en) * | 2017-06-12 | 2017-11-10 | 南昌大学 | A kind of incoherent scattering radar analogue echoes method and system based on simulink |
Non-Patent Citations (2)
| Title |
|---|
| 激光目标探测装置的回波特性及目标识别技术研究;张辉等;《光子学报》;20050125;第34卷(第01期);全文 * |
| 脉冲激光模拟器;羊毅等;《光电工程》;20001228;第27卷(第06期);第43-47页 * |
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