A wall detection friend-or-foe identification system

Abstract

The present invention discloses a wall detection and friend-or-foe identification system, which relates to the field of reconnaissance and identification technology. It adopts a three-dimensional wall-penetrating imaging radar and ultra-wideband technology to jointly apply, thereby realizing the number, identity and position determination of people inside and outside the wall. The ultra-wideband technology is used for indoor and outdoor personnel positioning, and the positioning accuracy can reach the centimeter level. The advantages of the ultra-wideband method in multipath and anti-interference are fully utilized to ensure high-speed and reliable communication between people.

Description

Technical Field

[0001] The invention relates to the technical field of detection and identification, in particular to a wall detection and friend-or-foe identification system. Background Art

[0002] In order to solve the problem of friend-or-foe identification beyond line of sight and at longer distances, the current friend-or-foe identification system mostly adopts an inquiry-response mechanism. This system imitates a "password". One party sends an inquiry signal. If the party being questioned is a friendly party, the transponder will automatically respond according to the password, and the questioning party will then receive it.

[0003] The Blue Force Tracking System is a GPS-enabled combat identification system that uses satellite communication links to mark the location and identity information of its own combat units. Each of its own combat units can receive and send battlefield situation information, and then build a complete battlefield space situation map, send the enemy and our own horizontal and vertical tactical information in the entire battlefield space to each combat unit, and display it on the computer screen to achieve the purpose of enemy and friend identification.

[0004] The millimeter wave battlefield target recognition system has good penetration ability for battlefield dust and smoke. The millimeter wave battlefield target recognition system was developed by taking advantage of the millimeter wave. The recognition method adopts the inquiry-response mechanism and is mainly used for the recognition of ground weapons and equipment.

[0005] The MARK series friend-or-foe identification system improves the fixed interrogation and response frequencies of the original system and adopts spread spectrum technology to add Model S and Model 5 communication modes, thereby improving the confidentiality and anti-interference capabilities of the system. It has formed a standard friend-or-foe identification system and is deployed on active main battleships, aircraft, and various radar systems, enhancing the interoperability between multiple platforms in the battlefield space.

[0006] The infrared night vision technology friend-or-foe identification system is a system that sticks a special tape that can reflect infrared light on the outside of the drone. The tape can be formed into characters and graphics, which can be easily identified using infrared night vision equipment.

[0007] However, the Blue Force Tracking System and the MARK series IFF systems are mainly for air battlefield IFF systems, suitable for large weapons and equipment; the millimeter wave battlefield target recognition system is mainly for the identification of surface weapons and equipment in battlefield environments such as dust and smoke; the infrared night vision technology IFF system is mainly for the identification of enemy and friendly targets within the visual range. None of the above systems can achieve IFF under the condition of a wall. Summary of the invention

[0008] In view of the above problems, the present invention provides a wall detection friend-or-foe identification system for overcoming the above problems or at least partially solving the above problems, thereby solving the problem that the enemy and the friendly forces are intertwined inside the building, the identities of the personnel cannot be effectively distinguished, and the positions of the personnel cannot be determined.

[0009] The present invention provides the following scheme:

[0010] A wall detection friend-or-foe identification system, comprising:

[0011] A three-dimensional through-wall imaging radar, which is used to search for status information of all targets behind a building wall obstacle, wherein the targets include a number of our personnel and a number of the other party personnel; the status information includes target position, target posture and target imaging information;

[0012] A terminal device, comprising an ultra-wideband tag and a display;

[0013] The terminal device is used for being worn by our personnel, so that any one of our personnel can generate and send an ultra-wideband positioning request through the terminal device, and after receiving an ultra-wideband positioning response, determine the position of the terminal device that responds to the ultra-wideband positioning request relative to the terminal device that sends the ultra-wideband positioning request based on the ultra-wideband positioning response, so as to realize the identification and positioning of our personnel among all the targets and obtain the identification and positioning information;

[0014] The display is used to display the status information and the identification and positioning information.

[0015] Preferably: the three-dimensional through-wall imaging radar is also used for inversion modeling of building structures to achieve perception of indoor environment during counter-terrorism.

[0016] Preferably: the terminal device includes a smart phone, a smart tablet and a smart wearable device.

[0017] Preferably, the smart wearable device includes a smart watch.

[0018] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0019] The embodiment of the present application provides a wall detection and friend-or-foe identification system, which uses a three-dimensional through-wall imaging radar and ultra-wideband technology to jointly apply to achieve the number, identity, and location of people inside and outside the wall. Ultra-wideband technology is used for indoor and outdoor personnel positioning, and the positioning accuracy can reach centimeter level. The advantages of ultra-wideband in multipath and anti-interference are fully utilized to ensure high-speed and reliable communication between people.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a connection block diagram of a wall detection friend-or-foe identification system provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the functional design of the through-wall radar to achieve response provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0025] See also Figure 1 , is a wall detection friend-or-foe identification system provided by an embodiment of the present invention, such as Figure 1 As shown, the system may include:

[0026] A three-dimensional through-wall imaging radar, which is used to search for status information of all targets behind a building wall obstacle, wherein the targets include a number of our personnel and a number of the other party personnel; the status information includes target position, target posture and target imaging information;

[0027] A terminal device, comprising an ultra-wideband tag and a display;

[0028] The terminal device is used for being worn by our personnel, so that any one of our personnel can generate and send an ultra-wideband positioning request through the terminal device, and after receiving an ultra-wideband positioning response, determine the position of the terminal device that responds to the ultra-wideband positioning request relative to the terminal device that sends the ultra-wideband positioning request based on the ultra-wideband positioning response, so as to realize the identification and positioning of our personnel among all the targets and obtain the identification and positioning information;

[0029] The display is used to display the status information and the identification and positioning information.

[0030] The wall detection and friend-or-foe identification system provided in the embodiment of the present application adopts the method of "three-dimensional wall-penetrating radar + intelligent terminal with integrated UWB tag" to realize reliable communication between people inside and outside the wall. The radar echo detection method of the three-dimensional wall-penetrating radar + the communication method of UWB are combined to realize the determination of the number and position of people inside and outside the wall, and the identification of one's own personnel.

[0031] Furthermore, the three-dimensional through-wall imaging radar is also used for inversion modeling of building structures to achieve perception of indoor environments during counter-terrorism.

[0032] The terminal device includes a smart phone, a smart tablet and a smart wearable device. The smart wearable device includes a smart watch.

[0033] The three-dimensional through-the-wall imaging radar used in the embodiment of the present application is a new generation of three-dimensional imaging through-the-wall radar that can adapt to the task requirements of emergency rescue sites and rapid target search. It has dynamic and static multi-target three-dimensional positioning and imaging functions, and can penetrate common non-metallic medium walls for detection, and quickly achieve target search and imaging. Compared with the through-the-wall radar with one-dimensional ranging and two-dimensional positioning functions, it can perform two-dimensional positioning and has the ability to measure height in pitch and elevation, and can provide richer environmental perception information such as target height and posture, and has a wider range of application scenarios.

[0034] As a high-precision positioning technology, ultra-wideband (UWB) technology plays an important role in indoor location determination, object anti-lost interaction, electronic fence management and other fields with its unique advantages. UWB technology realizes wireless transmission by sending and receiving extremely narrow pulses below nanoseconds or microseconds. The device and the tag communicate in an interactive manner, measuring the time required for radio waves to propagate between the device and the tag, so as to identify the location of the object. UWB uses extremely narrow pulse signals for wireless transmission, has strong anti-interference ability, can connect multiple devices at the same time, and will not affect each other's transmission performance, and its positioning accuracy can reach the centimeter level. At the same time, ultra-wideband (UWB) technology will not be affected by walls, and is particularly suitable for use in scenarios of enemy and friendly detection behind walls.

[0035] The wall friend-or-foe identification system provided in the embodiment of the present application is composed of a communication terminal with an integrated ultra-wideband tag and a three-dimensional wall-penetrating radar. It can quickly search for target activities behind building wall obstacles, quickly detect target positions, postures and imaging information, and at the same time, based on the inversion modeling of the building structure, realize rapid perception of the indoor environment during counter-terrorism, which can effectively reduce the risk of casualties of our personnel, conduct tactical assaults, and improve the success rate of combat missions. It is suitable for applications such as emergency search and rescue, earthquake rescue, and counter-terrorism search.

[0036] The targets that through-the-wall radar is concerned about are often not very mobile, and the Doppler spectrum range caused by the target is relatively narrow, so a high pulse repetition frequency is not required. Therefore, the functions of radar detection perception and radio communication response can be completed alternately through time division multiplexing. The specific flow chart is as follows: Figure 2 As shown in the figure, the radar sensing waveform penetrates the wall to achieve three-dimensional positioning of the target, and the communication coding waveform realizes UWB friend-or-foe identification.

[0037] In summary, the wall detection friend-or-foe identification system provided by this application uses a three-dimensional through-the-wall imaging radar and ultra-wideband technology to jointly apply to achieve the number, identity, and location determination of people inside and outside the wall. Ultra-wideband technology is used for indoor and outdoor personnel positioning, and the positioning accuracy can reach centimeter level. The advantages of ultra-wideband methods in multipath and anti-interference are fully utilized to ensure high-speed and reliable communication between people.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.

[0040] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A wall detection friend-or-foe identification system, characterized in that: include: A three-dimensional through-wall imaging radar, which is used to search for status information of all targets behind a building wall obstacle, wherein the targets include a number of our personnel and a number of the other party personnel; the status information includes target position, target posture and target imaging information; A terminal device, comprising an ultra-wideband tag and a display; The terminal device is used for being worn by our personnel, so that any one of our personnel can generate and send an ultra-wideband positioning request through the terminal device, and after receiving an ultra-wideband positioning response, determine the position of the terminal device that responds to the ultra-wideband positioning request relative to the terminal device that sends the ultra-wideband positioning request based on the ultra-wideband positioning response, so as to realize the identification and positioning of our personnel among all the targets and obtain the identification and positioning information; The display is used to display the status information and the identification and positioning information.

2. The wall detection friend-or-foe identification system according to claim 1 is characterized in that: The three-dimensional through-wall imaging radar is also used for inversion modeling of building structures to achieve perception of indoor environments during counter-terrorism.

3. The wall detection friend-or-foe identification system according to claim 1 is characterized in that: The terminal devices include smart phones, smart tablets and smart wearable devices.

4. The wall detection friend-or-foe identification system according to claim 3 is characterized in that: The smart wearable device includes a smart watch.

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