CN111610626A

CN111610626A - Antenna structure capable of realizing simultaneous and continuous multi-path laser communication

Info

Publication number: CN111610626A
Application number: CN202010471724.XA
Authority: CN
Inventors: 翟岩; 梅贵; 江帆; 王忠素
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-09-01
Anticipated expiration: 2040-05-29
Also published as: CN111610626B

Abstract

The invention discloses an antenna structure capable of realizing simultaneous and continuous communication of multiple paths of laser, which comprises: the device comprises a reflector, a rotating shaft, a bracket and a rotating device; the rotating shaft is fixedly connected with the reflecting mirror; the bracket is fixed at the incident end of the lens outside the paraboloid of revolution and used for rotatably supporting the rotating shaft; the rotating device comprises a driving motor and a position feedback encoder, and the rotating shaft is in transmission connection with the driving motor; the driving motor drives the rotating shaft to rotate, the reflecting mirror is driven to change the angle of the reflecting mirror, and the position feedback encoder feeds back the position of the reflecting mirror. The laser communication system can obtain the laser communication capacity of nearly 360 degrees (except when two links are completely shielded) on the premise of not greatly changing the antenna of the original laser communication system.

Description

Antenna structure capable of realizing simultaneous and continuous multi-path laser communication

Technical Field

The invention relates to the field of laser communication, in particular to an antenna structure capable of realizing simultaneous and continuous communication of multiple paths of laser.

Background

The communication has a very wide role in life, but the information rate of microwave communication can only reach the order of hundred megabits/s, and the information rate of laser communication can reach 2.5Gbit/s or higher. In the tomorrow when various data are in large-scale emergence, laser communication is inevitably widely applied to work with the characteristic of large data flow.

At present, laser communication equipment in research and in service basically uses a one-to-one communication mode, and although many units develop a one-to-many laser communication technology, the one-to-many laser communication technology is not really realized. The system closest to the one-to-many laser communication adopts a plurality of reflectors to reflect multi-path laser to a receiver for receiving, thereby realizing the one-to-many laser communication. In addition, a method of adopting a paraboloid of revolution as an antenna, reflecting multiple paths of laser light emitted to a focus of the paraboloid to a receiver for multiple paths of communication, and arranging a rotatable lens group to converge single path of laser light to the focus of the paraboloid of revolution is also provided.

However, in the prior art, when two laser beams are nearly overlapped and are shielded from each other, only one laser beam can be selected for communication.

Disclosure of Invention

In order to overcome the technical problems, the invention provides an antenna structure capable of realizing simultaneous and continuous communication of multiple paths of laser.

An antenna structure capable of realizing multi-path laser simultaneous continuous communication, comprising: the device comprises a reflector, a rotating shaft, a bracket and a rotating device;

the rotating shaft is fixedly connected with the reflecting mirror;

the bracket is fixed at the incident end of the lens outside the paraboloid of revolution and used for rotatably supporting the rotating shaft;

the rotating device comprises a driving motor and a position feedback encoder, and the rotating shaft is in transmission connection with the driving motor;

the driving motor drives the rotating shaft to rotate, the reflecting mirror is driven to change the angle of the reflecting mirror, and the position feedback encoder feeds back the position of the reflecting mirror.

Further, the bracket is integrally formed into a U-shaped structure with an opening, and comprises a lens and a lens holder

The vertical plate is fixedly connected with the incident end of the light guide plate, and the transverse plates are vertically distributed on two sides of the vertical plate;

the rotating shaft penetrates through the two transverse plates and is rotatably connected with the bracket;

the rotating shaft extends with the reflector at the opening between the two transverse plates.

In the above technical solution, the antenna structure capable of achieving simultaneous and continuous communication of multiple paths of laser beams provided by the present invention can enable a laser communication system to obtain a laser communication capability of approximately 360 degrees (except when two links are completely blocked) without greatly modifying an antenna of an original laser communication system.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an optical path when no mirror is added according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an optical path when a mirror is added according to an embodiment of the present invention.

Description of reference numerals:

1. a mirror; 2. a rotating shaft; 3. a drive motor; 5. a support; 6. a lens; 7. an added communication link; 8. is communicating over the link.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, an antenna structure capable of achieving simultaneous and continuous communication of multiple laser beams according to an embodiment of the present invention includes: the device comprises a reflector 1, a rotating shaft 2, a bracket 5 and a rotating device;

the rotating shaft 2 is fixedly connected with the reflector 1;

the bracket 5 is fixed at the incident end of the lens 6 outside the paraboloid of revolution and is used for rotatably supporting the rotating shaft 2;

the rotating device comprises a driving motor 3 and a position feedback encoder, and the rotating shaft 2 is in transmission connection with the driving motor 3;

the driving motor 3 drives the rotating shaft 2 to rotate, the reflecting mirror 1 is driven to change the angle of the reflecting mirror, and the position feedback encoder feeds back the position of the reflecting mirror 1.

In particular, the invention relates to a mirror assembly for performing tracking operations, mounted outside the lens outside the rotating paraboloid. Comprises a reflector 1, a rotating shaft 2, a driving motor 3, a position feedback encoder and a bracket 5. The bracket 5 is fixed at the incident end of the lens outside the paraboloid of revolution and is used for supporting the rotating shaft 2, and the rotating shaft 2 is connected with the driving motor 3 and the position feedback encoder by adopting a mechanical common means and is fixedly connected with the reflector 1. The driving motor 3 drives the rotating shaft 2 to rotate, the reflector 1 is driven to change the angle of the reflector, and the position of the reflector 1 is read by a position feedback encoder. The position feedback encoder is preferably a Henshel feedback system encoder photo incremental HC 20.

After receiving the communication command, the laser communication system starts laser data transmission. The lens group changes the position of the lens group relative to the paraboloid of revolution along with the position change of the transmitter and the receiver, when the laser communication system is expected to generate path interference with another working data link, the reflector 1 is used for changing the direction of the laser carrier wave of the communication link, so that the laser irradiates on the mirror surface of the reflector firstly, the light path is bent and is emitted into the lens group, and the focus of the lens group is coincided with the focus of the paraboloid of revolution. This will allow the added communication link 7 to be at an angle to the other communication link 8, thereby avoiding the two communication links from being blocked and causing one link to be broken. It will be appreciated by those skilled in the art that the fixed position of the support 5 is such that a turn of the light path is achieved.

Preferably, the bracket 5 is of an open U-shaped structure as a whole, and comprises a vertical plate fixedly connected with the incident end of the lens 6 and transverse plates vertically distributed on two sides of the vertical plate;

the rotating shaft 2 penetrates through the two transverse plates and is rotatably connected with the bracket 5;

the opening of the rotating shaft 2 between the two transverse plates is extended with a reflector 1.

Specifically, a vertical plate and two transverse plates form a support which is integrally of a U-shaped structure, the vertical plate is fixedly connected with the outer side of the lens, and the two transverse plates are far away from the lens. The two ends of the rotating shaft 2 are rotatably connected with the bracket 5 through mechanical common connection methods such as bearings and the like. The middle position of the rotating shaft 2 is fixedly connected with the reflector 1, so that the light of the reflector 1 can be transmitted and refracted to enter the lens group.

The invention can solve the problem that the transmitting ends of two communication links are positioned at the same direction. This problem is not solved by using only a rotating parabolic antenna (whether enhanced by a lens group or not). If the two transmitting ends are far enough, the laser emitted by the transmitting end at the far position can still be uninterruptedly communicated when the laser emitted by the transmitting end at the far position is not completely shielded by the transmitting end system at the near position.

The invention mainly explains that the plane reflector 1 is used as an optical element for deflecting the light path, and has the advantage of simple structure. Other forms of optical elements capable of producing a deflection of the optical path will occur to those skilled in the art, and the same or similar effects may be obtained with a particular design.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. An antenna structure capable of realizing simultaneous and continuous communication of multiple laser beams, comprising: the device comprises a reflector (1), a rotating shaft (2), a bracket (5) and a rotating device;

the rotating shaft (2) is fixedly connected with the reflecting mirror (1);

the bracket (5) is fixed at the incident end of the lens (6) outside the paraboloid of revolution and is used for rotatably supporting the rotating shaft (2);

the rotating device comprises a driving motor (3) and a position feedback encoder, and the rotating shaft (2) is in transmission connection with the driving motor (3);

the driving motor (3) drives the rotating shaft (2) to rotate, the reflector (1) is driven to change the angle of the reflector, and the position feedback encoder feeds back the position of the reflector (1).

2. The antenna structure capable of realizing multi-path laser simultaneous continuous communication according to claim 1, wherein the bracket (5) is a U-shaped structure with an opening as a whole, and comprises a vertical plate fixedly connected with the incident end of the lens (6) and transverse plates vertically distributed on two sides of the vertical plate;

the rotating shaft (2) penetrates through the two transverse plates and is rotatably connected with the bracket (5);

the rotating shaft (2) is provided with the reflector (1) extending from the opening between the two transverse plates.