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CN-224203414-U - Uncharged type radar receiving device based on laser reflection principle

CN224203414UCN 224203414 UCN224203414 UCN 224203414UCN-224203414-U

Abstract

The utility model relates to the technical field of optical instruments, in particular to a non-electrified radar receiving device based on a laser reflection principle, which comprises a laser emitting optical fiber, a reflective optical film assembly and a laser receiving optical fiber, wherein the laser emitting optical fiber and the laser receiving optical fiber are respectively positioned at two sides outside an opening of the reflective optical film assembly and are symmetrically distributed, an optical fiber medium is used for replacing an electronic loop to establish a physical isolation type signal channel, optical modulation and space distribution optimization of a laser signal are realized through an inward concave disc-shaped reflective film, and a symmetrical optical fiber array is constructed to improve the optical signal capturing efficiency, so that an anti-interference, electromagnetic pulse interference prevention and high-fidelity all-optical radar receiving solution is formed.

Inventors

  • WU XIAOFENG
  • CHENG SHENGBIN
  • ZHAN SHIPING

Assignees

  • 佛山大学

Dates

Publication Date
20260505
Application Date
20250520

Claims (10)

  1. 1. A non-electrified radar receiving device based on a laser reflection principle comprises a laser emitting optical fiber, a reflective optical film component and a laser receiving optical fiber, and is characterized in that: The laser emitting optical fiber and the laser receiving optical fiber are respectively positioned at two sides outside the opening of the reflective optical film assembly, and the laser emitting optical fiber and the laser receiving optical fiber are symmetrically distributed; When the reflective optical film assembly receives ultrasonic waves, the reflective optical film assembly vibrates, and laser reflected by the center of the reflective optical film assembly carries corresponding changes to enter the laser receiving optical fiber.
  2. 2. The non-electrified radar receiving device according to claim 1, wherein an included angle between an optical fiber port axis of the laser emitting optical fiber and a center normal line of the reflective optical film unit is 45 ° ± 2 °, and laser light emitted from the laser emitting optical fiber is focused on a center region of the reflective optical film unit.
  3. 3. The non-electrified radar receiving device according to claim 1, wherein an angle between an axis of an optical fiber port of the laser receiving optical fiber and a center normal line of the reflective optical film assembly is 45 ° ± 2 °.
  4. 4. The non-live radar receiver based on the principle of laser reflection according to claim 1, wherein the laser transmitting fiber and the laser receiving fiber each have a buried section with an outer sheath.
  5. 5. The non-electrified radar receiving device based on the principle of laser reflection according to claim 4, wherein the reflective optical film component is of a concave disc type structure; The surface of the reflective optical film component is plated with a dielectric film.
  6. 6. The non-electrified radar receiving device based on the principle of laser reflection according to claim 5, wherein the reflectivity of the dielectric film is greater than or equal to 99.5%.
  7. 7. The non-electrified radar receiving device according to claim 1, wherein a ratio of a radius of curvature R of the reflective optical film assembly to a diameter d of the laser emitting optical fiber satisfies R/d=1.618±0.1.
  8. 8. The non-electrified radar receiving device based on the principle of laser reflection according to claim 1, further comprising a support base; the support base is fixedly arranged at the bottom of the reflective optical film assembly, and the support base is not electrically connected with the reflective optical film assembly.
  9. 9. A non-electrified radar receiving device according to claim 3 and based on the principle of laser reflection, wherein the reflected light spot received by the laser receiving fiber covers at least 80% of the area of the input end of the laser receiving fiber.
  10. 10. The non-electrified radar receiving device according to claim 4, wherein the outer sheath is a metal-ceramic composite shielding outer sheath.

Description

Uncharged type radar receiving device based on laser reflection principle Technical Field The utility model relates to the technical field of optical instruments, in particular to a non-electrified radar receiving device based on a laser reflection principle. Background The traditional electronic radar receiving device relies on a metal conductor and an electronic loop to transmit signals, and has the obvious electromagnetic sensitivity defects that firstly, electronic components are easy to damage due to electromagnetic pulse weapon attack, secondly, the signal transmission process is easy to be interfered by a strong electromagnetic environment to cause signal-to-noise ratio degradation, thirdly, electronic equipment exposed to the ground surface has electromagnetic radiation characteristics, and the concealment is poor. The prior anti-interference technology mostly adopts an electromagnetic shielding or filtering circuit, but cannot fundamentally eliminate electromagnetic sensitive elements, and the risk of systematic paralysis still exists when the EMP attack of more than 10kV/m is encountered. Disclosure of utility model The utility model aims to provide a non-electrified radar receiving device based on a laser reflection principle, which is used for reconstructing a radar receiving system through an all-optical transmission architecture and solving the fundamental defects of a traditional electronic device in electromagnetic defense, signal fidelity and concealment. In order to achieve the above purpose, the utility model adopts the following technical scheme: The utility model provides a non-electrified radar receiving arrangement based on laser reflection principle, includes laser emission optic fibre, reflection type optical film subassembly and laser receiving optic fibre, laser emission optic fibre and laser receiving optic fibre are located the both sides of reflection type optical film subassembly opening outside respectively, just laser emission optic fibre and laser receiving optic fibre symmetric distribution. When the reflective optical film assembly receives ultrasonic waves, the reflective optical film assembly vibrates, and laser reflected by the center of the reflective optical film assembly can carry corresponding changes to enter the laser receiving optical fiber. In the non-electrified radar receiving device based on the laser reflection principle provided by at least one embodiment of the present disclosure, an included angle between an optical fiber port axis of the laser emission optical fiber and a center normal line of the reflective optical film assembly is 45 ° ± 2 °, and laser emitted by the laser emission optical fiber is focused on a center region of the reflective optical film assembly. In the non-electrified radar receiving device based on the laser reflection principle provided by at least one embodiment of the present disclosure, an included angle between an optical fiber port axis of the laser receiving optical fiber and a center normal line of the reflective optical film assembly is 45 ° ± 2 °. In the non-electrified radar receiving device based on the laser reflection principle provided by at least one embodiment of the present disclosure, the laser transmitting optical fiber and the laser receiving optical fiber each have a buried section, and the buried section has an outer sheath. In the non-electrified radar receiving device based on the laser reflection principle provided by at least one embodiment of the present disclosure, the reflective optical film component is of a concave disk structure. The surface of the reflective optical film component is plated with a dielectric film. In the non-electrified radar receiving device based on the laser reflection principle, the reflectivity of the dielectric film is more than or equal to 99.5%. In the non-electrified radar receiving device based on the laser reflection principle provided by at least one embodiment of the present disclosure, the ratio of the radius of curvature R of the reflective optical film component to the diameter d of the laser emitting optical fiber satisfies R/d=1.618±0.1. At least one embodiment of the present disclosure provides a non-electrified radar receiving device based on a laser reflection principle, which further includes a support base. The support base is fixedly arranged at the bottom of the reflective optical film assembly, and the support base is not electrically connected with the reflective optical film assembly. In the non-electrified radar receiving device based on the laser reflection principle provided by at least one embodiment of the present disclosure, the reflected light spot received by the laser receiving optical fiber covers at least 80% of the area of the input end of the laser receiving optical fiber. In the non-electrified radar receiving device based on the laser reflection principle provided by at least one embodiment of the present disclosure, the outer sheath is a