Asymmetric radio transmission system for countering electronic warfare jamming

Abstract

To provide an asymmetric radio transmission system for countering electronic warfare jamming that facilitates effects that are harder for an enemy to detect and jam. The asymmetric wireless transmission system for countering electronic warfare jamming according to the present invention includes a back-end weapon system 10 having a first wireless communication device including at least a first transceiver and a first processor, and a front-end weapon system 20 having a second wireless communication device including at least a second transceiver and a second processor. The first wireless communication device transmits a first modulated signal 11 to the second wireless communication device and transmits a frequency (f 1 ), and the second wireless communication device transmits a second modulated signal 21 to the first wireless communication device and operates at a frequency (f 2 ) The first modulation signal uses spread spectrum signal transmission to increase the signal gain (coding gain), making it difficult for enemies to detect and jam.

Description

[Technical field]

[0001] The present invention relates to a radio transmission system, and more particularly to an asymmetric radio transmission system for countering electronic warfare jamming. [Background technology]

[0002] Currently, the commonly used communication methods are all based on symmetric channels, such as RFID (radio frequency identification) wireless communication, optical fiber communication, laser communication, etc. Wireless communication mainly includes microwave communication and satellite communication, which does not require a wired transmission medium, has a high transmission speed, and can directly perform multi-point communication, but the transmitted information is exposed to the air, making it easy to be intercepted and making it difficult to ensure security. Optical fiber communication is a communication method that mainly transmits signals through optical fiber, which is highly reliable and fast, but requires the laying of an optical fiber network, which makes installation difficult. Laser communication is a communication method that uses lasers as a transmission medium, which has a large communication capacity, high confidentiality, and a simple and lightweight structure, but is subject to serious attenuation in the atmosphere and is difficult to aim. Summary of the Invention [Problem to be solved by the invention]

[0003] However, symmetric channel wireless communication systems have the disadvantage that, when used in military applications, they are susceptible to jamming or interception by hostile forces.

[0004] The main objective of the present invention is to provide an asymmetric radio transmission system for countering electronic warfare jamming, which promotes the effect of making the enemy more difficult to detect and jam, in order to solve the above-mentioned problems. [Means for solving the problem]

[0005] In order to achieve the above object, the asymmetric wireless transmission system for countering electronic warfare jamming of the present invention adopts the following means: That is, the asymmetric wireless transmission system for countering electronic warfare jamming of the present invention includes a back-end weapon system of our side having a first wireless communication device including at least a first transceiver and a first processor, and a front-end weapon system of our side having a second wireless communication device including at least a second transceiver and a second processor. The first wireless communication device transmits a first modulated signal to the second wireless communication device and modulates the frequency (f 1 ), and the second wireless communication device transmits a second modulated signal to the first wireless communication device and operates at a frequency (f 2 ) The first modulation signal uses spread spectrum signal transmission to increase the signal gain (coding gain), making it difficult for enemies to detect and jam. Effect of the Invention

[0006] According to the present invention, the greater the distance between the first and second modulated signals, the more difficult it is for the enemy to detect. In addition, through the above technical means, the present invention can effectively promote the effect of making the enemy more difficult to detect and more difficult to jam.

[0007] At least the following points will become apparent from the following specification and drawings. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic diagram of an asymmetric wireless transmission system for combating electronic warfare jamming according to an embodiment of the present invention; [Diagram 2] 1 is a schematic diagram of a front-end and back-end wireless communication device according to the present invention; [Diagram 3] FIG. 2 is a spectrum diagram showing same-frequency interference in narrowband transmission of the present invention. [Figure 4A] FIG. 2 is a spectrum diagram showing same-frequency signal interference experienced during transmission of the present invention. [Figure 4B]FIG. 2 is a diagram showing the relationship between the signal gain (coding gain) and the spectrum after spectrum spreading according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will be described below through the embodiments of the invention, but the following embodiments do not limit the invention according to the scope of the utility model claims. In addition, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0010] First, a specific embodiment of an asymmetric wireless transmission system for combating electronic warfare jamming according to the present invention will be described with reference to FIGS. 2 to 4B.

[0011] FIG. 1 is a schematic diagram of an asymmetric wireless transmission system for combating electronic warfare jamming according to an embodiment of the present invention.

[0012] In a possible preferred embodiment of the present invention, the asymmetric wireless transmission system for countering electronic warfare jamming according to the present invention comprises a back-end weapon system 10 of our side having a first wireless communication device 100 including at least a first transceiver 101 and a first processor 102, and a front-end weapon system 20 of our side having a second wireless communication device 200 including at least a second transceiver 201 and a second processor 202. However, the above configuration belongs to the prior art and is not the target of the utility model of the present invention, so the description thereof will not be repeated. As shown in FIG. 1, the weapon system of our side is susceptible to electronic warfare jamming by an enemy weapon system 30.

[0013] FIG. 2 is a schematic diagram showing the front-end and back-end wireless communication devices of the present invention. The main feature of the present invention is that a first wireless communication device 100 transmits a first modulated signal 11 to a second wireless communication device 200 and modulates the first modulated signal 11 at a frequency (f 1 ), and the second wireless communication device 200 transmits a second modulated signal 21 to the first wireless communication device 100 and operates at a frequency (f 2) In order to make it difficult for an enemy to detect and jam it, the first modulated signal 11 employs spread spectrum signal transmission to increase its signal gain (coding gain).

[0014] In this embodiment, the larger the interval (D) between the first modulated signal 11 and the second modulated signal 21, the more difficult it is to detect an enemy.

[0015] In this embodiment, the first transceiver 101 of the first wireless communication device 100 is used to transmit data (e.g., packages) and / or instructions to the second wireless communication device 200 or receive data and / or instructions from the second wireless communication device 200. In one possible embodiment, the first transceiver 101 is a transceiver circuit supporting a predetermined communication protocol. In a possible embodiment, the predetermined communication protocol may be IEEE 802.11 or a related communication standard, although the present invention is not limited thereto.

[0016] In one possible embodiment, the first transceiver 101 modulates data to be transmitted using a spread spectrum technique, and outputs the modulated data as a package. For example, the first transceiver 101 modulates data to be transmitted (e.g., a character string) using a direct-sequence spread spectrum (DSSS) technique to generate a package. The first processor 102 is connected to the second wireless communication device 200. In one possible embodiment, the first processor 102 can be a digital signal processor of a fundamental frequency circuit system of the first wireless communication device 100, and the present invention is not limited thereto.

[0017] As described above, the asymmetric wireless transmission system according to the present invention uses spread spectrum technology to counteract or suppress the adverse effects of "co-channel interference". As shown in FIG. 3, when a general narrowband transmission technology is adopted, if a high-power co-channel interference is encountered during signal transmission, the receiving end will receive a signal synthesized by the transmission signal and the co-channel interference. Since the power of the co-channel interference is stronger than that of the transmission signal, the transmission signal cannot be effectively identified.

[0018] Therefore, when the spread spectrum technology is adopted, before transmitting the signal, the signal spectrum is first spread in a specific manner and then transmitted. The co-channel signal interference received during transmission is shown in FIG. 4A. The receiving end operates in the reverse direction with the pre-spectrum spreading method, so that the signal restores its original frequency bandwidth, the interference signal is spread with a low gain, and the original signal can be easily identified. The relationship between the signal gain (Coding Gain) after spectrum spreading and the spectrum is shown in FIG. 4B. The asymmetric wireless transmission system uses spread spectrum technology to counteract or suppress "co-channel interference".

[0019] As can be seen from FIGS. 4A and 4B, the asymmetric wireless transmission system according to the present invention uses spread spectrum technology to counteract or suppress "co-channel interference", not only making it more difficult for the enemy to detect, but also making it more difficult to interfere.

[0020] The embodiments of the present invention have been described in detail with reference to the drawings above. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present invention are also included.

Explanation of Reference Numerals

[0021] 10 Our backend weapon system 11 First modulation signal 20 Our front-end weapon system 21 Second modulation signal 30 Enemy weapon system 100 First wireless communication device 101 First Transceiver 102 First Processor 200 Second wireless communication device 201 2nd Transceiver 202 Second Processor (D) Spacing

Claims

1. a friendly back-end weapons system having a first wireless communication device including at least a first transceiver and a first processor; a friendly front-end weapon system having a second wireless communication device including at least a second transceiver and a second processor; An asymmetric radio transmission system for countering electronic warfare jamming, comprising: The first wireless communication device transmits a first modulated signal to the second wireless communication device and a frequency (f １ ), and the second wireless communication device operates a second modulated signal to the first wireless communication device and operates at a frequency (f ２ ) and the first modulated signal is adapted for spread spectrum signal transmission to increase signal gain (coding gain) so that it is difficult for an enemy to detect and jam it.

2. 2. The asymmetric wireless transmission system for combating electronic warfare jamming as claimed in claim 1, wherein the greater the interval between the first modulated signal and the second modulated signal, the more difficult it is for an enemy to detect.

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