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Multichannel laser echo signal simulation system

A technology of laser echo and signal simulation, applied in the field of photoelectric detection, can solve the problem of high cost and achieve the effect of low cost

Inactive Publication Date: 2015-06-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing laser echo signal simulation system can only simulate two channels or four channels, and the cost of using any signal generator is high, the present invention provides an output signal amplitude of each channel, signal rise time and channel interval Multi-channel laser echo simulation system with configurable delay

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  • Multichannel laser echo signal simulation system

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specific Embodiment approach 1

[0015] Specific implementation mode 1. Combination figure 1 , figure 2 and Figure 4 In this embodiment, the multi-channel laser echo signal simulation system generates an exponentially rising voltage signal through the RC charging and discharging circuit, and then obtains a pulse signal through capacitive coupling to simulate the laser echo signal. The RC charging and discharging circuit module is a variable power supply The rise time of the output signal is set by changing the resistance value or capacitance value or the resistance value and capacitance value; the delay between the output signals of each channel is controlled by controlling the delay between the output signals corresponding to the RC charge and discharge circuit electronically controlled switch signals. It includes a controller 1, a multi-channel variable power supply module 2, a multi-channel RC charging and discharging circuit module 3, a display system 4, a capacitive coupling output port 5, a keyboard ...

specific Embodiment approach 2

[0020] Specific embodiment two, combine Figure 5 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is: the resistor in the single-channel RC charge-discharge circuit module 9 in the multi-channel RC charge-discharge circuit module 3 selects a fixed resistance resistor 16, and the capacitor selects a capacitor The array 17 and the analog switch array 18 are implemented, and the controller 1 writes different values ​​into the analog switch array 18 to determine whether the corresponding analog switch is turned on or not. Each analog switch corresponds to a capacitor, so as to control whether the corresponding capacitor is connected to the circuit, and finally obtain equivalent capacitors with different capacitances, and then control the rise time of the output signal corresponding to the single-channel RC charging and discharging circuit module 9 . Others are the same as the first embodiment.

specific Embodiment approach 3

[0021] Specific implementation mode three, combination Figure 6 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is: the resistor in the single-channel RC charge-discharge circuit module 9 in the multi-channel RC charge-discharge circuit module 3 selects the second digital potentiometer 13, and the capacitor selects The capacitor array 17 and the analog switch array 18 are realized, and the controller 1 writes different values ​​to the second digital potentiometer 13 to obtain resistors of different resistance values; at the same time, the controller 1 writes different values ​​to the analog switch array 18 to determine the corresponding Analog switch on or off. Each analog switch corresponds to a capacitor, so as to control whether the corresponding capacitor is connected to the circuit, and finally obtain equivalent capacitors with different capacitances. The rise time of the output signal of the corresponding single-channel RC cha...

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Abstract

The invention provides a multichannel laser echo signal simulation system, belongs to the technical field of photoelectric detection and relates to a multichannel laser echo simulation signal achieving method. The multichannel laser echo signal simulation system is settable in channel output signal amplitude, signal rise time and inter-channel delay. The technical scheme for solving the technical problem is that voltage signals with rising indexes are produced through RC charge-discharge circuits, and then a pulse signal is obtained through capacity coupling so as to simulate a laser echo signal. An RC charge circuit power supply is a variable power source, and the output signal amplitude is changed by changing a charging voltage value. The output signal rise time is set by changing a resistance value, or a capacitance value or the resistance value and the capacitance value. The delay of output signals of channels is controlled by controlling the delay of RC charge-discharge circuit electronic control switch signals corresponding to the output signals. The multichannel laser echo signal simulation system can safely finish electronic debugging of a laser imaging system in a laboratory with low cost.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to a multi-channel laser echo signal simulation system. Background technique [0002] The laser imaging system is used for laser active imaging and distance measurement of ground targets, and generates angle-angle-distance images including target and background and target intensity images. Compared with passive imaging methods, laser 3D imaging has strong anti-electromagnetic interference and anti-stealth capabilities, and can identify stealth targets; it has higher distance, angle, and speed resolution; and it has higher security. According to the type of detectors used, laser imaging systems can be divided into single-point detector laser imaging systems and area array detector laser imaging systems. The single-point detector laser imaging system obtains the three-dimensional information of the target area by scanning, which has low efficiency, but its structure i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/48
Inventor 徐正平沈宏海许永森孙超
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI