CN215894934U - Active luneberg lens radar countermeasure system - Google Patents
Active luneberg lens radar countermeasure system Download PDFInfo
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- CN215894934U CN215894934U CN202121692068.2U CN202121692068U CN215894934U CN 215894934 U CN215894934 U CN 215894934U CN 202121692068 U CN202121692068 U CN 202121692068U CN 215894934 U CN215894934 U CN 215894934U
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Abstract
The utility model relates to an active luneberg lens radar countermeasure system, which comprises a luneberg lens, a signal processing unit, an antenna unit array, a plurality of circulators and a plurality of antenna receiving and transmitting units, wherein the luneberg lens is arranged in the antenna unit array; the antenna unit array is arranged on the surface of the Luneberg lens and comprises a plurality of antenna units; 1 antenna unit corresponds to 1 circulator and 1 antenna receiving and transmitting unit; the antenna element is connected with a port H1 of the circulator; the input end T1 of the antenna receiving and transmitting unit is connected with the port H3 of the circulator, and the output end T4 of the antenna receiving and transmitting unit is connected with the port H2 of the circulator; one connection end group of the signal processing unit corresponds to an antenna receiving and transmitting unit, an input end X1 of the connection end group is connected with an output end T2 of the antenna receiving and transmitting unit, and an output end X2 is connected with an input end T3 of the antenna receiving and transmitting unit. When the radar is used, an active encryption deception signal is fed back to the radar so as to suppress the detection capability of the radar on a weak reflection characteristic target.
Description
Technical Field
The utility model relates to the technical field of communication equipment, in particular to an active luneberg lens radar countermeasure system.
Background
In the application process of the radar, a target object irradiated by the radar reflects a specific electromagnetic wave signal and is received by the radar, and the radar determines information such as the distance from the target object to an electromagnetic wave transmitting point, the distance change rate (radial speed), the azimuth and the altitude according to the characteristics of the received electromagnetic wave. The radar positioning technology brings great convenience to production and life, the radar positioning technology is an important investigation technical means in modern war, a fighter needs to be prevented from being found by an enemy radar in an application environment during war, and people hope to interfere radar positioning through the technology in such a scene so as to realize a stealth effect. At present, radar interference rejection ware on the market reflects the electromagnetic wave through the regional constantly change of reflection of reflecting plate, is passive radar interference rejection ware, and the electromagnetic wave reflection signal that the radar received is only the wave form slightly different like this for current radar interference rejection ware's result of use is not good. Based on the defects existing in the use of the existing radar countermeasure jammers, a new active radar countermeasure system needs to be designed urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an active Luneberg lens radar countermeasure system which has the advantages of simple structure, scientific design, active encryption deception signals fed back to the radar during use, capability of suppressing the detection capability of the radar on weak reflection characteristic targets and the like.
The technical scheme of the utility model is realized as follows: an active luneberg lens radar countermeasure system is characterized by comprising a luneberg lens, a signal processing unit, an antenna unit array, a plurality of circulators and a plurality of antenna receiving and transmitting units; the antenna unit array is arranged on the surface of the Luneberg lens and comprises a plurality of antenna units, and the receiving and transmitting directions of the antenna units are all arranged towards the direction of the Luneberg lens; 1 antenna unit corresponds to 1 circulator and 1 antenna receiving and transmitting unit; the circulator is provided with a port H1, a port H2 and a port H3, and the antenna unit is connected with the port H1 of the circulator; the antenna receiving and transmitting unit is provided with an input end T1, an output end T2, an input end T3 and an output end T4, wherein the input end T1 is communicated with the output end T2, and the input end T3 is communicated with the output end T4; the input end T1 of the antenna receiving and transmitting unit is connected with the port H3 of the circulator, and the output end T4 of the antenna receiving and transmitting unit is connected with the port H2 of the circulator; the signal processing unit is provided with a plurality of connecting end groups, each connecting end group comprises an input end X1 and an output end X2, one connecting end group of the signal processing unit corresponds to one antenna receiving and transmitting unit, the input end X1 of the connecting end group corresponds to the output end T2 of the antenna receiving and transmitting unit, and the output end X2 of the connecting end group corresponds to the input end T3 of the antenna receiving and transmitting unit.
The working principle of the utility model is as follows: when the utility model is applied to a target object, when the target object is irradiated by a radar, an antenna unit in an antenna unit array receives a radar signal, the radar signal is an analog signal, the antenna unit receives the analog signal and then transmits the analog signal to a signal processing unit through a circulator and an antenna receiving and transmitting unit, the signal processing unit performs characteristic coding on the analog signal and then outputs the analog signal, the characteristic coding generally performs characteristic coding on the signal such as time delay, Doppler shift, amplitude and the like, the analog signal after the characteristic coding is transmitted to the antenna unit through the antenna receiving and transmitting unit and the circulator to be transmitted, so that the signal is transmitted through a Luneberg lens, the signal processing unit can control the signal to be transmitted on more than one antenna unit, thereby forming a plurality of different false target characteristics, deceiving the radar of the other party and enabling the target object to generate an actively controlled radar interference signal, the radar cannot judge the received signal to achieve the countermeasure against the radar, and the radar is prevented from finding a target object; in addition, when the radar antenna is used, channels from a plurality of antenna units to the signal processing unit can be combined into a group according to the countermeasure task, more complex radar countermeasure capability is realized, and the using effect is better.
Furthermore, each antenna receiving and transmitting unit is provided with a receiving module and a transmitting module, the receiving module is connected between the input end T1 and the output end T2, and the transmitting module is connected between the input end T3 and the output end T4.
Furthermore, a signal amplification frequency converter is arranged in a receiving module of each antenna receiving and transmitting unit.
Further, the luneberg lens is of a spherical structure; the antenna unit array is formed by a plurality of antenna units through a spherical array preferably, and the spherical center of the spherical array is concentric with the spherical center of the luneberg lens.
Further, the signal processing unit is a unit that directly processes an analog signal.
Further, the antenna element array is formed by a plurality of antenna elements, preferably by a planar array.
The utility model has the beneficial effects that: the radar has the advantages of simple structure, scientific design, capability of suppressing the detection capability of the radar on the target with the weak reflection characteristic and the like, and the active encrypted deception signal is fed back to the radar when the radar is used.
Drawings
Fig. 1 is a schematic structural diagram of an antenna element array of embodiment 1 disposed on a luneberg lens.
Fig. 2 is a schematic structural diagram of embodiment 1.
Fig. 3 is a schematic diagram of the hardware connection of the antenna receiving and transmitting unit according to embodiment 1.
Fig. 4 is a schematic diagram of connection of 1 connection terminal group, a processor, an a/D conversion module, and a D/a conversion module in the signal processing unit according to embodiment 2.
Description of reference numerals: 1-a luneberg lens; 2-an array of antenna elements; 3-antenna element.
Detailed Description
Example 1
As shown in fig. 1 and fig. 2, an active luneberg lens radar countermeasure system of the present embodiment includes a luneberg lens 1, a signal processing unit, an antenna unit array 2, a plurality of circulators, and a plurality of antenna receiving and transmitting units; the antenna unit array 2 is arranged on the surface of the luneberg lens 1, and the luneberg lens is of a spherical structure; the antenna unit array 2 comprises a plurality of antenna units 3, the receiving and transmitting directions of the antenna units 3 are all arranged towards the direction of the luneberg lens 1, the antenna unit array 2 of the active luneberg lens radar countermeasure system is formed by a plurality of antenna units 3 through a spherical array, the spherical center of the spherical array is concentric with the spherical center of the luneberg lens 1, the antenna unit array 2 of the active luneberg lens radar countermeasure system is formed by more than 10 antenna units 3, and the antenna units 3 of the antenna unit array 2 are all arranged on a reflecting plate (the reflecting plate is not shown in the attached drawing); 1 antenna unit 3 corresponds to 1 circulator and 1 antenna receiving and transmitting unit; the circulator is provided with a port H1, a port H2 and a port H3, and the antenna unit 3 is connected with the port H1 of the circulator; the antenna receiving and transmitting unit is provided with an input end T1, an output end T2, an input end T3 and an output end T4, wherein the input end T1 is communicated with the output end T2, and the input end T3 is communicated with the output end T4; the input end T1 of the antenna receiving and transmitting unit is connected with the port H3 of the circulator, and the output end T4 of the antenna receiving and transmitting unit is connected with the port H2 of the circulator; the signal processing unit is the unit that directly handles analog signal, and the signal processing unit is equipped with a plurality of connecting terminal groups, and each connecting terminal group all includes an input X1 and an output X2, and a connecting terminal group of signal processing unit corresponds with an antenna receiving emission unit, and the input X1 of connecting terminal group corresponds with the output T2 of antenna receiving emission unit and is connected, and the output X2 of connecting terminal group corresponds with the input T3 of antenna receiving emission unit and is connected. When the active luneberg lens radar countermeasure system is applied to a target object, when the target object is irradiated by a radar, an antenna unit 3 in an antenna unit array 2 receives a radar signal, the radar signal is an analog signal, the antenna unit 3 receives the analog signal and transmits the analog signal to a signal processing unit through a circulator and an antenna receiving and transmitting unit, the signal processing unit performs characteristic coding on the analog signal and outputs the analog signal, the characteristic coding generally performs characteristic coding such as time delay, Doppler shift, amplitude phase and the like on the signal, the analog signal subjected to the characteristic coding is transmitted to the antenna unit 3 through the antenna receiving and transmitting unit and the circulator to be transmitted, the signal is transmitted through the luneberg lens and then is emitted, the signal processing unit can control the signal to be transmitted on more than one antenna unit 3, so that a plurality of different false target characteristics are formed and the radar of the other party is deceived, the target object can generate an actively controlled radar interference signal, so that the radar cannot judge the received signal to achieve the countermeasure against the radar and avoid the radar finding the target object; in addition, when the radar antenna is used, channels from the plurality of antenna units 3 to the signal processing unit can be combined into a group according to the countermeasure task, more complex radar countermeasure capability is realized, and the using effect is better. The active luneberg lens radar countermeasure system has the advantages of simple structure, scientific design, active encryption deception signals fed back to the radar during use, capability of suppressing the detection capability of the radar on weak reflection characteristic targets and the like.
In order to make the structure of the antenna receiving and transmitting unit more reasonable, as shown in fig. 3, each antenna receiving and transmitting unit is provided with a receiving module and a transmitting module, the receiving module is connected between the input end T1 and the output end T2, and the transmitting module is connected between the input end T3 and the output end T4.
As shown in fig. 3, the receiving module of each antenna receiving and transmitting unit is provided with a signal amplifying frequency converter, so that the signal received by the signal processing unit is amplified and frequency-converted by the receiving module, and the active luneberg lens radar countermeasure system has stronger countermeasure on the signal transmitted by the countermeasure system.
Example 2
The present embodiment is different from embodiment 1 in that: in this embodiment, the analog signal is converted into a digital signal and then feature encoding is performed. As shown in fig. 4, a processor is disposed in the signal processing unit; the input end X1 and the output end X2 of each connecting end group are both connected with the processor, an A/D conversion module is connected between the input end X1 of each connecting end group and the processor, and a D/A conversion module is connected between the output end X2 of each connecting end group and the processor. The a/D conversion module is a component that converts an analog signal into a digital signal, and the D/a conversion module is a component that converts a digital signal into an analog signal. In the design, when the digital signal processing device is used, the A/D conversion module of the signal processing unit converts a received analog signal into a digital signal, the processor performs characteristic coding on the digital signal, a more complex deception signal can be formed compared with a mode of directly performing characteristic coding on the analog signal, the digital signal after the characteristic coding is converted into the analog signal through the D/A conversion module of the signal processing unit and then output, the analog signal is transmitted to the antenna unit through the antenna receiving and transmitting unit and the circulator, and the signal is transmitted through the Luneberg lens.
Example 3
The present embodiment is different from embodiment 1 in that: the antenna element array of this embodiment is formed by a plurality of antenna elements through a planar array (this embodiment is not shown in the drawings), the planar array in this embodiment may be a rectangular array, or may also be a circular array, this embodiment is applicable to a scheme in which the antenna element array is formed by 3 to 10 antenna elements, and such a small number of antenna elements form a planar array, so that the luneberg lens can cover a surface formed by the antenna element array.
Claims (8)
1. An active luneberg lens radar countermeasure system, characterized by: the device comprises a Luneberg lens, a signal processing unit, an antenna unit array, a plurality of circulators and a plurality of antenna receiving and transmitting units; the antenna unit array is arranged on the surface of the Luneberg lens and comprises a plurality of antenna units, and the receiving and transmitting directions of the antenna units are all arranged towards the direction of the Luneberg lens; 1 antenna unit corresponds to 1 circulator and 1 antenna receiving and transmitting unit; the circulator is provided with a port H1, a port H2 and a port H3, and the antenna unit is connected with the port H1 of the circulator; the antenna receiving and transmitting unit is provided with an input end T1, an output end T2, an input end T3 and an output end T4, wherein the input end T1 is communicated with the output end T2, and the input end T3 is communicated with the output end T4; the input end T1 of the antenna receiving and transmitting unit is connected with the port H3 of the circulator, and the output end T4 of the antenna receiving and transmitting unit is connected with the port H2 of the circulator; the signal processing unit is provided with a plurality of connecting end groups, each connecting end group comprises an input end X1 and an output end X2, one connecting end group of the signal processing unit corresponds to one antenna receiving and transmitting unit, the input end X1 of the connecting end group corresponds to the output end T2 of the antenna receiving and transmitting unit, and the output end X2 of the connecting end group corresponds to the input end T3 of the antenna receiving and transmitting unit.
2. An active luneberg lens radar countermeasure system according to claim 1, wherein: each antenna receiving and transmitting unit is provided with a receiving module and a transmitting module, the receiving module is connected between an input end T1 and an output end T2, and the transmitting module is connected between an input end T3 and an output end T4.
3. An active luneberg lens radar countermeasure system according to claim 2, wherein: and a signal amplification frequency converter is arranged in the receiving module of each antenna receiving and transmitting unit.
4. An active luneberg lens radar countermeasure system according to claim 1, wherein: a processor is arranged in the signal processing unit; the input end X1 and the output end X2 of each connecting end group are both connected with the processor, an A/D conversion module is connected between the input end X1 of each connecting end group and the processor, and a D/A conversion module is connected between the output end X2 of each connecting end group and the processor.
5. An active luneberg lens radar countermeasure system according to claim 1, wherein: the signal processing unit is a unit that directly processes an analog signal.
6. An active luneberg lens radar countermeasure system according to claim 1, wherein: the luneberg lens is of a spherical structure; the antenna unit array is formed by a plurality of antenna units through a spherical array, and the spherical center of the spherical array is concentric with the spherical center of the luneberg lens.
7. An active luneberg lens radar countermeasure system according to claim 1, wherein: the antenna unit array is formed by a planar array of a plurality of antenna units.
8. An active luneberg lens radar countermeasure system according to claim 1 or 6 or 7, wherein: the antenna units of the antenna unit array are all arranged on a reflecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121692068.2U CN215894934U (en) | 2021-07-26 | 2021-07-26 | Active luneberg lens radar countermeasure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121692068.2U CN215894934U (en) | 2021-07-26 | 2021-07-26 | Active luneberg lens radar countermeasure system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215894934U true CN215894934U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121692068.2U Active CN215894934U (en) | 2021-07-26 | 2021-07-26 | Active luneberg lens radar countermeasure system |
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| Country | Link |
|---|---|
| CN (1) | CN215894934U (en) |
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2021
- 2021-07-26 CN CN202121692068.2U patent/CN215894934U/en active Active
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