High-precision laser ranging distance simulation device

Abstract

The invention discloses a high-precision laser ranging distance simulation device; wherein a laser pulse signal emitted by a transmitting end of a laser range finder enters a laser detector and an amplification comparison circuit to be converted into an electric pulse signal; the generated pulse signal is divided into two paths to be respectively sent into an FPGA module and a TDC module, wherein the FPGA module sends control and communication information to the TDC module through an IO interface, the FPGA module sends pulse driving signals to the laser diode and the driving circuit through the IO interface to enable the laser diode to emit light, laser signals output by the laser diode are split through the beam splitter prism, one path is sent to a receiving end of the laser range finder, and the other path is sent to the laser detector; the FPGA module communicates with the communication module through an IO port, and the communication module communicates with an upper computer through an RS232 interface. According to the invention, the distance simulation precision of the device is improved, the reliability of the device is enhanced, and the use and maintenance cost of the device is reduced.

Description

technical field [0001] The invention belongs to the technical field of laser ranging distance simulation, and mainly relates to a high-precision laser ranging distance simulation device for a laser range finder. The device can complete the detection and calibration of the laser range finder in an external field environment. Background technique [0002] With the rapid development of laser ranging technology, pulsed laser ranging has been widely used in military, aviation, aerospace and other fields due to its large range, high precision, and strong anti-interference ability. Ranging accuracy and ranging range are the two most important indicators of the laser rangefinder. During the use of the laser rangefinder, these two indicators will also change with the change of the external environment and the increase of the use time. Therefore, in the production, development and later use of the laser rangefinder, it has become an important work content to test it through relevant g...

AI Technical Summary

Problems solved by technology

[0005] There are two technical problems to be solved in the present invention. One is that the general photoelectric laser ranging distance simulation device has nanosecond level of uncertainty error caused by the FPGA clock, and the simulation accuracy is relatively poor; the other is to overcome the general photoelectric laser ranging distance simulation. When the use environment of the device changes or the use time increases, the device parameters in the optics and circuits will change, resulting in a decrease in the accuracy of the simulated distance

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