Interference signal elimination method, device and apparatus

Abstract

An embodiment of the present invention provides an interference signal elimination method, device, and apparatus, relating to the field of radar technology. The method includes: coupling the radar's to-be-transmitted signal to obtain a coupled radio frequency signal; adjusting the coupled radio frequency signal according to interference signal description information obtained by pre-calibrating the radar's interference signal to obtain a radio frequency cancellation signal, wherein the interference signal is: a signal generated by the radar's transmitted signal that interferes with the radar's received signal, and the description information of the radio frequency cancellation signal is consistent with the interference signal description information; obtaining a target signal received by the radar's receiving antenna; and using the radio frequency cancellation signal to perform interference signal elimination processing on the target signal to obtain a processed signal. Application of this solution can eliminate interference caused by signals transmitted by the radar to the outside world on the radar's received signal.

Description

Technical Field

[0001] The present invention relates to the field of radar technology, and in particular to a method, equipment and device for eliminating interference signals. Background Art

[0002] Radar can transmit signals to the outside world and receive signals reflected from the outside world. However, the signals transmitted by the radar to the outside world will interfere with the signals received by the radar, causing the signals received by the radar to contain interference signals, thereby reducing the accuracy of the signals received by the radar.

[0003] In view of this, a solution for eliminating interference signals is needed to eliminate the interference of the signals transmitted by the radar to the outside world on the signals received by the radar. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a method, device, and apparatus for eliminating interference signals to eliminate interference caused by signals transmitted by a radar to the outside world on signals received by the radar. The specific technical solution is as follows:

[0005] In a first aspect, an embodiment of the present application provides an interference signal elimination method, which is applied to an interference signal elimination device installed in a radar. The method includes:

[0006] coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal;

[0007] Adjusting the coupled radio frequency signal according to interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a radio frequency cancellation signal, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar receive signal, and the description information of the radio frequency cancellation signal is consistent with the description information of the interference signal;

[0008] Acquiring a target signal received by a receiving antenna of the radar;

[0009] The radio frequency cancellation signal is used to perform interference signal cancellation processing on the target signal to obtain a processed signal.

[0010] In a second aspect, an embodiment of the present application provides an interference signal elimination device, which is installed in a radar and includes a signal generating component, a signal processing component, and a signal elimination component. The input interface of the signal generating component is connected to the RF transmission channel of the radar, and different output interfaces of the signal generating component are respectively connected to the transmitting antenna of the radar and the input interface of the signal processing component. Different input interfaces of the signal elimination component are respectively connected to the receiving antenna of the radar and the output interface of the signal processing component. The output interface of the signal elimination component is connected to the RF receiving channel of the radar.

[0011] The signal generating component is configured to obtain a signal to be transmitted in the radio frequency transmission channel, couple the signal to be transmitted to obtain a coupled radio frequency signal, send the signal to be transmitted to the transmitting antenna of the radar, and send the coupled radio frequency signal to the signal processing component;

[0012] the signal processing component being configured to adjust the coupled radio frequency signal according to interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a radio frequency cancellation signal, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar receive signal, and the description information of the radio frequency cancellation signal is consistent with the description information of the interference signal;

[0013] The signal elimination component is used to obtain the target signal received by the receiving antenna, use the radio frequency cancellation signal to perform interference signal elimination processing on the target signal, obtain a processed signal, and output the processed signal through the output interface.

[0014] In a third aspect, an embodiment of the present application provides an interference signal elimination device, which is applied to an interference signal elimination device, wherein the interference signal elimination device is installed in a radar, and the device includes:

[0015] A signal coupling module, configured to couple the radar's transmitted signal to obtain a coupled radio frequency signal;

[0016] a signal adjustment module, configured to adjust the coupled RF signal according to interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a RF cancellation signal, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar receive signal, and the description information of the RF cancellation signal is consistent with the description information of the interference signal;

[0017] A signal acquisition module, configured to acquire a target signal received by a receiving antenna of the radar;

[0018] The signal elimination module is used to use the radio frequency cancellation signal to perform interference signal elimination processing on the target signal to obtain a processed signal.

[0019] In a fourth aspect, an embodiment of the present application provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0020] Memory for storing computer programs;

[0021] The processor is configured to implement the method steps described in the first aspect when executing the program stored in the memory.

[0022] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in the first aspect are implemented.

[0023] Beneficial effects of the embodiments of the present invention:

[0024] As can be seen from the above, when the scheme provided in the embodiment of the present application is applied to eliminate interference signals, after the signal generating component couples and obtains a coupled RF signal, the signal processing component adjusts the coupled RF signal according to the interference signal description information. The interference signal description information is information obtained by pre-calibrating the radar interference signal. The radar interference signal refers to a signal generated by the radar transmission signal that interferes with the radar received signal. The interference signal description information can be understood as the description information of the interference signal obtained by measuring the radar interference in advance. Thus, the coupled RF signal is adjusted according to this description information so that the description information of the adjusted RF cancellation signal is consistent with the interference signal description information, that is, the RF cancellation signal is the same as the interference signal generated by the above-mentioned interference of the radar. In this way, the RF cancellation signal is used to perform interference signal cancellation processing on the target signal, which can accurately eliminate the interference signal mixed in the target signal. Therefore, the interference signal elimination scheme provided in the embodiment of the present application can accurately eliminate the interference signal of the radar received signal due to the signal transmitted by the radar to the outside world, thereby improving the accuracy of the radar received signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0026] Figure 1a A schematic diagram of the structure of a radar provided in an embodiment of the present application;

[0027] Figure 1b A schematic structural diagram of a first interference signal elimination device provided in an embodiment of the present application;

[0028] Figure 2a A schematic diagram of the structure of a signal processing component provided in an embodiment of the present application;

[0029] Figure 2b A schematic diagram of the structure of a second interference signal elimination device provided in an embodiment of the present application;

[0030] Figure 3a A schematic structural diagram of the first surface of the signal generating component provided in an embodiment of the present application;

[0031] Figure 3b A schematic structural diagram of the second surface of the signal generating component provided in an embodiment of the present application;

[0032] Figure 4a A schematic structural diagram of a third interference signal elimination device provided in an embodiment of the present application;

[0033] Figure 4b A schematic structural diagram of a fourth interference signal elimination device provided in an embodiment of the present application;

[0034] Figure 4c A schematic structural diagram of a fifth interference signal elimination device provided in an embodiment of the present application;

[0035] Figure 5 A flowchart of a method for eliminating interference signals provided in an embodiment of the present application;

[0036] Figure 6 A flow chart of a calibration method provided in an embodiment of the present application;

[0037] Figure 7 A schematic structural diagram of an interference signal elimination device provided in an embodiment of the present application;

[0038] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of the present invention.

[0040] In order to eliminate the interference of the radar's external signals on the radar's received signals, the embodiments of the present application provide a method, device and apparatus for eliminating interference signals, which are introduced one by one through specific embodiments below.

[0041] First, an interference signal elimination device provided in an embodiment of the present application is described.

[0042] The interference signal elimination device provided in the embodiment of the present application is installed in the radar. A schematic diagram of a portion of the radar structure when the interference signal elimination device is not installed is shown in FIG. Figure 1aAs shown in the figure, the schematic diagram of part of the radar structure when the interference signal elimination equipment is installed is as follows Figure 1b As shown, Figure 1b It can also be considered as a structural diagram of the first interference signal elimination device provided by the embodiment of the present application. Figure 1a 、 Figure 1b Make an introduction.

[0043] against Figure 1a , Figure 1a The structure shown includes a radio frequency transmission channel 101 , a transmission antenna 102 , a radio frequency reception channel 103 and a reception antenna 104 .

[0044] The RF transmission channel 101 is connected to the transmitting antenna 102. The radar's signal to be transmitted is transmitted to the transmitting antenna 102 through the RF transmission channel 101, and then the transmitting antenna 102 transmits the signal to the outside world. The RF receiving channel 103 is connected to the receiving antenna 104. After the receiving antenna 104 receives the signal reflected from the outside world, it transmits the received signal to other signal processing components of the radar through the RF receiving channel 103.

[0045] against Figure 1b , Figure 1b exist Figure 1a Based on the structure shown, it also includes a signal generating component 105, a signal processing component 106 and a signal eliminating component 107.

[0046] The connection relationship between the components is described below.

[0047] The input interface of the signal generating component 105 is connected to the RF transmitting channel 101 of the radar. The signal generating component 105 has two output interfaces, and different output interfaces of the signal generating component 105 are respectively connected to the transmitting antenna 102 of the radar and the input interface of the signal processing component 106. The signal eliminating component 107 has two input interfaces, and different input interfaces of the signal eliminating component 107 are respectively connected to the receiving antenna 104 of the radar and the output interface of the signal processing component 106. The output interface of the signal eliminating component 107 is connected to the RF receiving channel 103 of the radar.

[0048] The signal generating component 105 , the signal processing component 106 and the signal eliminating component 107 are introduced below respectively.

[0049] 1. Signal generation component 105

[0050] The signal generating component 105 is used to obtain the signal to be transmitted transmitted in the RF transmission channel 101, couple the signal to be transmitted to obtain a coupled RF signal, send the signal to be transmitted to the radar's transmitting antenna 102, and send the coupled RF signal to the signal processing component 106.

[0051] The input interface of the signal generating component 105 is connected to the RF transmission channel 101. When a signal to be transmitted is transmitted in the RF transmission channel 101, the signal generating component 105 can receive the signal to be transmitted transmitted in the RF transmission channel 101 through the input interface and couple the received signal to be transmitted. For example, the signal to be transmitted can be coupled through a coupling method such as capacitive coupling and transformer coupling to obtain a coupled signal as a coupled RF signal.

[0052] The signal generating component 105 has two output interfaces, one of which is connected to the transmitting antenna 102, and the signal generating component 105 can send the signal to be transmitted to the transmitting antenna 102 through the output interface; the other output interface of the signal generating component 105 is connected to the input interface of the signal processing component 106, and the signal generating component 105 can send the coupled RF signal obtained by coupling to the signal processing component 106 through the output interface.

[0053] In one embodiment of the present application, the signal generating component 105 is a power divider.

[0054] 2. Signal processing component 106

[0055] The signal processing component 106 is configured to adjust the coupled RF signal according to the interference signal description information obtained by pre-calibrating the radar interference signal to obtain a RF cancellation signal.

[0056] First, the above-mentioned interference signal will be described.

[0057] Interference signal is a signal generated by the radar transmission signal that interferes with the radar reception signal.

[0058] For radars, the interference caused by the signals they transmit to the outside world on their received signals is called radar self-interference. With the rapid development of wireless communications and sensing technologies, the demand for wireless signal transmission in various applications continues to increase, becoming more complex and diverse. Radar self-interference is becoming increasingly common. Furthermore, radar design is becoming smaller and more compact, and radar transmit and receive signals share a single antenna, making isolation between the two increasingly difficult. However, the interference signals generated by radar self-interference are often static. That is, regardless of how the radar's transmitted and / or received signals change, the strength and phase of the interference signal in the received signal remain constant.

[0059] In view of this, before the radar is put into practical use, the signal generated by the radar transmission signal and interfering with the radar reception signal can be calibrated in advance, that is, the interference signal can be measured in advance to obtain the description information of the interference signal, such as the strength and phase of the interference signal.

[0060] The specific implementation method of calibrating the interference signal of the radar can be found in the subsequent embodiments and will not be described in detail here.

[0061] Next, the signal processing component 106 is introduced.

[0062] The signal processing component 106 is used to adjust the coupled RF signal according to the interference signal description information to obtain an RF cancellation signal. In addition, the description information of the RF cancellation signal is consistent with the description information of the interference signal. It can be understood that the RF cancellation signal and the interference signal are the same signal, and the signal processing component 106 needs to convert the coupled RF signal into an interference signal.

[0063] Specifically, the signal processing component 106 may determine various signal description information of the coupled RF signal, compare it with the interference signal description information, obtain an adjustment amount for adjusting the coupled RF signal, and then adjust the coupled RF signal according to the adjustment amount.

[0064] For example, if the signal strength of the coupled RF signal is 2 and the signal strength recorded in the interference signal description information is 1, the signal processing component 106 may determine the signal strength adjustment amount to be -1, thereby reducing the signal strength of the coupled RF signal from 2 to 1.

[0065] The specific internal structure of the signal processing component 106 can be found in subsequent embodiments and will not be described in detail here.

[0066] 3. Signal elimination component 107

[0067] The signal elimination component 107 is used to obtain the target signal received by the receiving antenna 104, use the radio frequency cancellation signal to perform interference signal elimination processing on the target signal, obtain a processed signal, and output the processed signal through the output interface.

[0068] Specifically, when the signal generating component 105 couples the signal to be transmitted, it can couple to obtain a coupled RF signal with the same polarity as the signal to be transmitted, or it can couple to obtain a coupled RF signal with the opposite polarity to the signal to be transmitted. These two situations are described below.

[0069] 3.1. The coupled RF signal has the same polarity as the signal to be transmitted

[0070] In this case, when the signal processing component 106 adjusts the coupled RF signal, it can obtain an RF cancellation signal with the same polarity as the coupled RF signal, and thus the RF cancellation signal also has the same polarity as the signal to be transmitted. Furthermore, since the polarity of the interference signal in the target signal received from the receiving antenna 104 is consistent with the polarity of the signal to be transmitted, the polarity of the RF cancellation signal is the same as the polarity of the interference signal in the target signal. Therefore, after the signal cancellation component 107 obtains the RF cancellation signal with the same polarity as the signal to be transmitted, it can invert the RF cancellation signal. After inversion, the RF cancellation signal has the opposite polarity to the interference signal in the target signal. At this time, the inverted RF cancellation signal is combined with the target signal for processing. In this way, the interference signal in the target signal and the inverted RF cancellation signal cancel each other out, thereby eliminating the interference signal in the target signal.

[0071] 3.2. The polarity of the coupled RF signal is opposite to that of the transmitted signal

[0072] In this case, when the signal generating component 105 couples the signal to be transmitted, a coupled signal having a polarity opposite to that of the signal to be transmitted can be obtained.

[0073] For example, when the signal generating component 105 is an inverting power divider, it can couple the signal to be transmitted to obtain a coupled signal with a polarity opposite to that of the signal to be transmitted.

[0074] After the coupled RF signal is adjusted by the signal processing component 106, the resulting RF cancellation signal also has the opposite polarity to the signal to be transmitted, while the interference signal in the target signal has the same polarity as the signal to be transmitted. Therefore, the RF cancellation signal also has the opposite polarity to the interference signal in the target signal. Therefore, when the signal cancellation component 107 obtains the RF cancellation signal, it can directly merge the obtained RF cancellation signal with the target signal for processing, so that the RF cancellation signal and the interference signal in the target signal cancel each other, thereby eliminating the interference signal in the target signal. In this way, the signal cancellation component 107 does not need to perform the signal inversion step and can directly merge the received RF cancellation signal with the target signal for processing, which simplifies the step of eliminating the interference signal and improves the efficiency of eliminating the interference signal.

[0075] In one embodiment of the present application, the signal elimination component 107 is a combiner.

[0076] As can be seen from the above, when the scheme provided in the embodiment of the present application is used to eliminate interference signals, after the signal generating component 105 couples and obtains a coupled RF signal, the signal processing component adjusts the coupled RF signal according to the interference signal description information. The interference signal description information is information obtained by pre-calibrating the radar interference signal. The radar interference signal refers to a signal generated by the radar transmission signal that interferes with the radar received signal. The interference signal description information can be understood as the description information of the interference signal obtained by measuring the radar interference in advance. The coupled RF signal is adjusted according to this description information so that the description information of the adjusted RF cancellation signal is consistent with the interference signal description information, that is, the RF cancellation signal is the same as the interference signal generated by the above-mentioned interference of the radar. In this way, the RF cancellation signal is used to perform interference signal cancellation processing on the target signal, which can accurately eliminate the interference signal mixed in the target signal. Therefore, the interference signal elimination scheme provided in the embodiment of the present application can accurately eliminate the interference signal of the radar received signal due to the signal transmitted by the radar to the outside world, thereby improving the accuracy of the radar received signal.

[0077] The internal structure of the signal processing component 106 is described below.

[0078] In one embodiment of the present application, the signal processing component 106 includes an attenuator and a phase shifter connected in series.

[0079] See also Figure 2a , shows an internal structure of the signal processing component 106, Figure 2a In the embodiment, attenuator 106A and phase shifter 106B are connected in series, with attenuator 106A in the front and phase shifter 106B in the back. The input interface of attenuator 106A is connected to the output interface of signal generating component 105 that outputs the coupled RF signal, and the output interface of phase shifter 106B is connected to an input interface of signal cancellation component 107.

[0080] exist Figure 2a Based on this, the structure of the entire interference signal elimination device is as follows Figure 2b As shown, the device includes a signal generating component 105, an attenuator 106A, a phase shifter 106B and a signal eliminating component 107 connected in series in sequence.

[0081] In addition, in the signal processing component 106, the positions of the attenuator 106A and the phase shifter 106B can also be swapped, that is, the phase shifter 106B is in front and the attenuator 106A is in the back, and the attenuator 106A and the phase shifter 106B are still connected in series, so that the input interface of the phase shifter 106B is connected to the output interface of the signal generating component 105 that outputs the coupled RF signal, and the output interface of the attenuator 106A is connected to an input interface of the signal cancellation component 107.

[0082] The functions of the attenuator 106A and the phase shifter 106B are described below.

[0083] 1. Attenuator 106A

[0084] The attenuator 106A is configured to attenuate the signal strength of the signal input to the attenuator 106A to the signal strength indicated by the interference signal description information.

[0085] In one implementation, the attenuator 106A can determine the signal strength of the signal input to the attenuator 106A, calculate the signal strength difference between the strength and the signal strength recorded in the interference signal description information, and attenuate the signal strength of the signal input to the attenuator 106A according to the signal strength difference to obtain the attenuated signal, and output the attenuated signal from the output interface of the attenuator 106A.

[0086] In another implementation, the attenuator 106A can use the signal strength recorded in the interference signal description information as the target value of the attenuation operation. In this way, when the attenuator 106A receives the signal, it directly attenuates the received signal to the target value, thereby attenuating the signal strength input to the attenuator 106A to the signal strength represented by the interference signal description information.

[0087] 2. Phase shifter 106B

[0088] The phase shifter 106B is configured to adjust the phase of the signal input to the phase shifter 106B to the phase indicated by the interference signal description information.

[0089] In one implementation, the phase shifter 106B can determine the phase of the signal input to the phase shifter 106B, calculate the phase difference between the phase and the phase recorded in the interference signal description information, and according to the phase difference, phase-shift the signal input to the phase shifter 106B to obtain a phase-shifted signal, and output the phase-shifted signal from the output interface of the phase shifter 106B.

[0090] In another implementation, the phase shifter 106B can use the phase recorded in the interference signal description information as the target value of the phase shift operation. In this way, when the phase shifter 106B receives a signal, it directly adjusts the phase of the received signal to the target value, thereby adjusting the phase of the signal input to the phase shifter 106B to the phase indicated by the interference signal description information.

[0091] Below Figure 2a Taking the structure shown as an example, the signal processing process of the signal processing component 106 is introduced.

[0092] The output interface of signal generator 105, which outputs the coupled RF signal, is connected to the input interface of attenuator 106A. Therefore, after signal generator 105 couples and obtains the coupled RF signal, it can transmit the coupled RF signal to attenuator 106A. Attenuator 106A receives the coupled RF signal, attenuates the signal strength of the coupled RF signal, obtains an attenuated signal, and transmits the attenuated signal to phase shifter 106B. Phase shifter 106B receives the attenuated signal, shifts the phase of the attenuated signal, and obtains a phase-shifted signal as the RF cancellation signal, which is then transmitted to signal cancellation component 107.

[0093] When the phase shifter 106B is placed in front and the attenuator 106A is placed in the back of the signal processing component 106, the processing order of the two is reversed. The phase shifter 106B first shifts the phase of the coupled RF signal, and then the attenuator 106A attenuates the signal strength of the phase-shifted signal to obtain the RF cancellation signal.

[0094] As can be seen from the above, when the scheme provided in the embodiment of the present application is applied to eliminate the interference signal, the signal processing component includes an attenuator and a phase shifter connected in series. The attenuator and the phase shifter can attenuate and shift the coupled RF signal, so that the signal strength and phase of the RF cancellation signal are consistent with the interference signal description information. Therefore, the RF cancellation signal can be used to accurately eliminate the interference signal mixed in the target signal. Therefore, the interference signal elimination scheme provided in the embodiment of the present application can accurately eliminate the interference signal of the signal received by the radar due to the signal emitted by the radar to the outside world, thereby improving the accuracy of the radar received signal.

[0095] The following describes a structure of a signal generating component.

[0096] In one embodiment of the present application, see Figure 3a 、 Figure 3b , showing a schematic diagram of the structure of different surfaces of a signal generating assembly. The signal generating assembly includes a dielectric plate 301, embedded with an input interface ground layer 302, an input interface signal line 303, a first output interface ground layer 304, a first output interface signal line 305, a second output interface ground layer 306, and a second output interface signal line 307. The dielectric plate 301 also includes a first metal via 308 and a second metal via 309 extending through the dielectric plate 301.

[0097] The following combination Figure 3a 、 Figure 3b The structure of the signal generating component shown in the figure illustrates the connection relationship between the various components included in the signal generating component.

[0098] Figure 3aThe first surface of a dielectric board 301 is shown, with an input interface signal line 303, a second output interface ground layer 306, and a first output interface signal line 305 located on this first surface. The input interface signal line 303 is connected to a first metal via 308 located on one side of the first surface and to the first output interface signal line 305, respectively. The second output interface ground layer 306 is connected to a second metal via 309 located on one side of the first surface. A connecting line L1 connects the input interface signal line 303 and the first output interface signal line 305, while a connecting line L2 connects the input interface signal line 303 and the first metal via 308 located on the first surface.

[0099] Figure 3b The second surface of the dielectric plate 301 is shown. The first and second surfaces are two opposing surfaces of the dielectric plate 301. The input interface ground layer 302, the second output interface signal line 307, and the first output interface ground layer 304 are located on the second surface. The input interface ground layer 302 is connected to the second metal via 309 on one side of the second surface and the first output interface ground layer 304, respectively. The second output interface signal line 307 is connected to the first metal via 308 on one side of the second surface. A connecting line L3 connects the input interface ground layer 302 and the first output interface ground layer 304, and a connecting line L4 connects the input interface ground layer 302 to the second metal via 309 on the second surface.

[0100] In addition, the input interface ground layer 302 and the input interface signal line 303 are both connected to the RF transmission channel 101, the first output interface ground layer 304 and the first output interface signal line 305 are both connected to the transmitting antenna 102, and the second output interface ground layer 306 and the second output interface signal line 307 are both connected to the signal processing component 106.

[0101] The following describes the process of signal transmission within the signal generating component.

[0102] The input interface ground layer 302 and the input interface signal line 303 are both connected to the RF transmission channel 101. When the signal to be transmitted in the RF transmission channel 101 enters the signal generating component through the input interface ground layer 302 and the input interface signal line 303, the signal to be transmitted is divided into two paths. One path is directly transmitted to the transmitting antenna 102 through the first output interface ground layer 304 and the first output interface signal line 305, and the other path passes through the first metal via 308 and the second metal via 309, resulting in signal inversion, thereby obtaining a coupled RF signal, which is transmitted to the signal processing component 106.

[0103] As can be seen from the above, when applying the solution provided by the embodiments of the present disclosure to eliminate interference signals, the signal generating component using the above structure can accurately couple the signal to be transmitted to obtain a coupled RF signal, and send the signal to be transmitted to the transmitting antenna through one output interface, and send the coupled RF signal to the signal processing component through another output interface, thereby accurately eliminating the interference signal in the target signal received by the receiving antenna. It can be seen that the interference signal elimination solution provided by the embodiments of the present application can accurately eliminate interference signals and improve the accuracy of radar received signals.

[0104] In one embodiment of the present application, the connecting lines L1 and L3 may be double-sided parallel strip lines located on different surfaces of the dielectric plate 301 and parallel to each other. The connecting lines L2 and L4 may also be double-sided parallel strip lines.

[0105] In addition to the components or devices mentioned above, the interference signal elimination device may also include other components for achieving other functions.

[0106] In one embodiment of the present application, the interference signal elimination device further includes a first amplification component. Figure 4a The structural schematic diagram shown introduces the first amplifying component.

[0107] from Figure 4a As can be seen, the first amplifying component 108 is located between the RF transmission channel 101 and the signal generating component 105 , the input interface of the first amplifying component 108 is connected to the RF transmission channel 101 , and the output interface of the first amplifying component 108 is connected to the input interface of the signal generating component 105 .

[0108] The first amplifying component 108 is used to obtain the signal to be transmitted and amplify the signal to be transmitted. In this way, the signal generating component 105 can also obtain the signal to be transmitted after being amplified by the first amplifying component 108, thereby ensuring that the signal generating component 105 can successfully couple to obtain the coupled RF signal, thereby improving the reliability of interference signal elimination.

[0109] In another embodiment of the present application, the interference signal elimination device further includes a second amplification component. Figure 4b The structural schematic diagram shown introduces the second amplifying component.

[0110] from Figure 4b As can be seen, the second amplifying component 109 is located between the signal elimination component 107 and the RF receiving channel 103 , the input interface of the second amplifying component 109 is connected to the output interface of the signal elimination component 107 , and the output interface of the second amplifying component 109 is connected to the RF receiving channel 103 .

[0111] The second amplification component 109 is used to obtain the processed signal output by the signal cancellation component 107, amplify the obtained signal, and output the amplified processed signal through the output interface. This allows the RF receiving channel 103 to transmit an amplified, relatively stable signal, thereby ensuring that the radar's other signal processing components 106 can accurately process the signal transmitted by the RF receiving channel 103, thereby improving radar accuracy.

[0112] In another embodiment of the present application, the interference signal elimination device may include the first amplifying component 108 and the second amplifying component 109 .

[0113] The description of the first amplifying component 108 and the second amplifying component 109 can be found in the above embodiment, and the schematic diagram of the structure of the interference signal elimination device can be found in Figure 4c , I will not go into details here.

[0114] When the interference signal elimination device includes both the first amplifying component 108 and the second amplifying component 109, the device also has the functions and effects brought by these two components, which can not only improve the reliability of eliminating interference signals, but also improve the radar accuracy.

[0115] Corresponding to the above-mentioned interference signal elimination device, an embodiment of the present application also provides an interference signal elimination method.

[0116] In one embodiment of the present application, see Figure 5 , provides a flow chart of an interference signal elimination method. In this embodiment, the above method is applied to an interference signal elimination device, which is installed in a radar.

[0117] The above method includes the following steps S501-S504.

[0118] Step S501: coupling the radar signal to be transmitted to obtain a coupled radio frequency signal.

[0119] For details on coupling the radar's transmitted signal, please refer to the aforementioned introduction to the signal generation component and will not be repeated here.

[0120] Step S502: According to the interference signal description information obtained by pre-calibrating the radar interference signal, the coupled radio frequency signal is adjusted to obtain a radio frequency cancellation signal.

[0121] The interference signal is a signal generated by the radar transmission signal and interfering with the radar reception signal. The description information of the RF cancellation signal is consistent with the description information of the interference signal.

[0122] For details on adjusting the coupled RF signal, please refer to the aforementioned introduction to the signal processing component and will not be repeated here.

[0123] Step S503: Acquire the target signal received by the radar's receiving antenna.

[0124] Step S504: using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal.

[0125] For details on how to use the RF cancellation signal to eliminate interference from the target signal, please refer to the above introduction to the signal cancellation component and will not be repeated here.

[0126] As can be seen from the above, when the scheme provided in the embodiment of the present application is used to eliminate the interference signal, after the coupled RF signal is coupled, the coupled RF signal is adjusted according to the interference signal description information. The interference signal description information is information obtained by pre-calibrating the radar interference signal. The radar interference signal refers to the signal generated by the radar transmission signal that interferes with the radar received signal. The interference signal description information can be understood as the description information of the interference signal obtained by measuring the radar interference in advance. Thus, the coupled RF signal is adjusted according to this description information so that the description information of the adjusted RF cancellation signal is consistent with the interference signal description information, that is, the RF cancellation signal is the same as the interference signal generated by the above-mentioned interference of the radar. In this way, the RF cancellation signal is used to perform interference signal elimination processing on the target signal, which can accurately eliminate the interference signal mixed in the target signal. Therefore, the interference signal elimination scheme provided in the embodiment of the present application can accurately eliminate the interference signal of the signal received by the radar due to the signal transmitted by the radar to the outside world, thereby improving the accuracy of the radar received signal.

[0127] In one embodiment of the present application, when adjusting the coupled RF signal, the signal strength of the coupled RF signal can be attenuated to the signal strength represented by the interference signal description information obtained by pre-calibration for the interference signal of the radar to obtain a first intermediate signal; the phase of the first intermediate signal can be adjusted to the phase represented by the interference signal description information to obtain a RF cancellation signal.

[0128] As can be seen from the above, when the scheme provided in the embodiment of the present application is applied to eliminate the interference signal, the coupled RF signal is attenuated and phase-shifted, so that the signal strength and phase information of the RF cancellation signal can be kept consistent with the interference signal description information, thereby using the RF cancellation signal to accurately eliminate the interference signal mixed in the target signal. Therefore, the interference signal elimination scheme provided in the embodiment of the present application can accurately eliminate the interference signal in the signal received by the radar due to the signal emitted by the radar to the outside world, thereby improving the accuracy of the radar received signal.

[0129] In one embodiment of the present application, when coupling the signal to be transmitted, a coupled radio frequency signal having a polarity opposite to that of the signal to be transmitted may be obtained.

[0130] The specific coupling method can be found in the aforementioned device embodiment and will not be described in detail here.

[0131] In this case, after the coupled RF signal is adjusted to obtain the RF cancellation signal, the RF cancellation information can be directly combined with the target signal to obtain a processed signal, thereby achieving the purpose of using the RF cancellation signal to eliminate the interference signal of the target signal.

[0132] In this solution, the received RF cancellation signal can be directly combined with the target signal for processing, which simplifies the steps of eliminating the interference signal and improves the efficiency of eliminating the interference signal.

[0133] In one embodiment of the present application, before coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal, a signal amplification process is performed on the signal to be transmitted.

[0134] In this solution, the signal to be transmitted is amplified, so that the coupled signal is the amplified signal to be transmitted, thereby ensuring that the device can successfully couple to obtain the coupled RF signal, thereby improving the reliability of interference signal elimination.

[0135] In another embodiment of the present application, when using the RF cancellation signal to perform interference signal elimination processing on the target signal, the RF cancellation signal is used to perform interference signal elimination processing on the target signal to obtain a second intermediate signal, and the second intermediate signal is amplified to obtain a processed signal.

[0136] In this solution, the second intermediate signal is amplified to obtain a processed signal. This allows the processed signal to be an amplified and relatively stable signal, thereby ensuring that other signal processing components of the radar can accurately process the signal, thereby improving the radar accuracy.

[0137] In another embodiment of the present application, the device amplifies the radar's transmitted signal before coupling it to obtain a coupled RF signal. Furthermore, when using the RF cancellation signal to eliminate interference from the target signal, the device uses the RF cancellation signal to eliminate interference from the target signal to obtain a second intermediate signal, which is then amplified to obtain a processed signal. This not only improves the reliability of interference signal elimination but also enhances radar accuracy.

[0138] The following introduces the specific implementation method of calibrating the radar interference signal.

[0139] In one embodiment of the present application, see Figure 6 , a flow chart of a calibration method is provided. In this embodiment, the above method is applied to radar and includes the following steps S601-S605.

[0140] Step S601: Transmit a calibration signal to a calibration device within the radar detection range.

[0141] The initial value of the signal strength of the calibration signal is a preset strength.

[0142] The above-mentioned calibration device is a detection target placed within the radar detection range.

[0143] The above-mentioned preset strength is a pre-set signal strength.

[0144] When the radar is calibrated for the first time, a calibration signal with a preset signal strength may be transmitted to the calibration device.

[0145] Step S602: Receive the echo signal reflected by the calibration device.

[0146] Step S603: Detect whether the signal amplitude of the echo signal is lower than the preset signal amplitude. If yes, execute step S604; if not, execute step S605.

[0147] The above-mentioned preset signal amplitude is a pre-set signal amplitude.

[0148] Specifically, the interference signal is generated by the radar's transmitted signal, interfering with the radar's received signal. It is not caused by external factors affecting the transmitted signal after the radar transmits the signal to the outside world. Regardless of the signal transmitted by the radar, it will interfere with the radar's received signal. In fact, the signal received by the radar can be considered as the superposition of the normal signal received from the outside world and the interference signal caused by the radar's transmitted signal. As long as the radar reduces the signal strength of the normal signal received from the outside world to a low value, it can be roughly considered that the signal received by the radar is the interference signal.

[0149] In view of this, the radar can detect whether the signal amplitude of the echo signal is lower than the preset signal amplitude. If the signal amplitude of the echo signal is lower than the preset signal amplitude, it is considered that the signal strength of the normal signal received by the radar from the outside world has been reduced to a smaller value. At this time, the echo signal can be directly regarded as an interference signal, and step S604 can be executed.

[0150] If the signal amplitude of the echo signal is not lower than the preset signal amplitude, it is considered that the signal strength of the normal signal received by the radar from the outside world is still large. At this time, the echo signal cannot be regarded as an interference signal. Therefore, step S605 can be executed.

[0151] Step S604: Determine that the description information of the echo signal is interference signal description information.

[0152] Step S605: The signal whose signal strength is less than the signal strength of the calibration signal transmitted last time is used as a new calibration signal, and the process returns to step S601.

[0153] As can be seen from the above, the application of this solution can accurately calibrate the interference signal of the radar, thereby obtaining accurate interference signal description information, and using relatively accurate interference signal description information to eliminate the interference signal, which can improve the accuracy of eliminating the interference signal.

[0154] Corresponding to the above-mentioned interference signal elimination method, an embodiment of the present application also provides an interference signal elimination device.

[0155] In one embodiment of the present application, see Figure 7 , provides a schematic structural diagram of an interference signal elimination device. In this embodiment, the above device is applied to an interference signal elimination device installed in a radar, and the device includes:

[0156] The signal coupling module 701 is used to couple the radar's transmitted signal to obtain a coupled radio frequency signal;

[0157] a signal adjustment module 702, configured to adjust the coupled RF signal according to interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a RF cancellation signal, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar receive signal, and the description information of the RF cancellation signal is consistent with the description information of the interference signal;

[0158] A signal acquisition module 703 is used to acquire a target signal received by a receiving antenna of the radar;

[0159] The signal cancellation module 704 is configured to use the RF cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal.

[0160] As can be seen from the above, when the scheme provided in the embodiment of the present application is used to eliminate the interference signal, after the coupled RF signal is coupled, the coupled RF signal is adjusted according to the interference signal description information. The interference signal description information is information obtained by pre-calibrating the radar interference signal. The radar interference signal refers to the signal generated by the radar transmission signal that interferes with the radar received signal. The interference signal description information can be understood as the description information of the interference signal obtained by measuring the radar interference in advance. Thus, the coupled RF signal is adjusted according to this description information so that the description information of the adjusted RF cancellation signal is consistent with the interference signal description information, that is, the RF cancellation signal is the same as the interference signal generated by the above-mentioned interference of the radar. In this way, the RF cancellation signal is used to perform interference signal elimination processing on the target signal, which can accurately eliminate the interference signal mixed in the target signal. Therefore, the interference signal elimination scheme provided in the embodiment of the present application can accurately eliminate the interference signal of the signal received by the radar due to the signal transmitted by the radar to the outside world, thereby improving the accuracy of the radar received signal.

[0161] In one embodiment of the present application, the signal adjustment module 702 is specifically configured to:

[0162] Attenuating the signal strength of the coupled radio frequency signal to a signal strength indicated by interference signal description information obtained by pre-calibration for an interference signal of the radar, to obtain a first intermediate signal;

[0163] The phase of the first intermediate signal is adjusted to the phase indicated by the interference signal description information to obtain a radio frequency cancellation signal.

[0164] As can be seen from the above, when the scheme provided in the embodiment of the present application is applied to eliminate the interference signal, the coupled RF signal is attenuated and phase-shifted, so that the signal strength and phase information of the RF cancellation signal can be kept consistent with the interference signal description information, thereby using the RF cancellation signal to accurately eliminate the interference signal mixed in the target signal. Therefore, the interference signal elimination scheme provided in the embodiment of the present application can accurately eliminate the interference signal in the signal received by the radar due to the signal emitted by the radar to the outside world, thereby improving the accuracy of the radar received signal.

[0165] In one embodiment of the present application, the signal coupling module 701 is specifically configured to:

[0166] coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal having a polarity opposite to that of the signal to be transmitted;

[0167] The signal elimination module 704 is specifically configured to:

[0168] The radio frequency cancellation signal is combined with the target signal to obtain a processed signal.

[0169] In this solution, the received RF cancellation signal can be directly combined with the target signal for processing, which simplifies the steps of eliminating the interference signal and improves the efficiency of eliminating the interference signal.

[0170] In one embodiment of the present application, the device further includes:

[0171] The first amplification module is used to perform signal amplification processing on the signal to be transmitted of the radar before coupling the signal to be transmitted to obtain a coupled radio frequency signal.

[0172] In this solution, the signal to be transmitted is amplified, so that the coupled signal is the amplified signal to be transmitted, thereby ensuring that the device can successfully couple to obtain the coupled RF signal, thereby improving the reliability of interference signal elimination.

[0173] In one embodiment of the present application, the device further includes:

[0174] The signal elimination module is specifically configured to: utilize the radio frequency cancellation signal to perform interference signal elimination processing on the target signal to obtain a second intermediate signal; and perform signal amplification processing on the second intermediate signal to obtain a processed signal.

[0175] In this solution, the second intermediate signal is amplified to obtain a processed signal. This allows the processed signal to be an amplified and relatively stable signal, thereby ensuring that other signal processing components of the radar can accurately process the signal, thereby improving the radar accuracy.

[0176] In one embodiment of the present application, the device further includes:

[0177] The first amplification module is used to perform signal amplification processing on the signal to be transmitted of the radar before coupling the signal to be transmitted to obtain a coupled radio frequency signal.

[0178] The signal elimination module is specifically configured to: utilize the radio frequency cancellation signal to perform interference signal elimination processing on the target signal to obtain a second intermediate signal; and perform signal amplification processing on the second intermediate signal to obtain a processed signal.

[0179] This solution can not only improve the reliability of interference signal elimination, but also improve radar accuracy.

[0180] In one embodiment of the present application, the interference signal description information is obtained by calibrating the radar in the following manner:

[0181] Transmitting a calibration signal to a calibration device within a detection range of the radar, wherein an initial value of a signal strength of the calibration signal is a preset strength;

[0182] receiving an echo signal reflected by the calibration device;

[0183] Detecting whether the signal amplitude of the echo signal is lower than a preset signal amplitude;

[0184] If yes, determining that the description information of the echo signal is the interference signal description information;

[0185] If not, a signal with a signal strength less than that of the calibration signal transmitted last time is used as a new calibration signal, and the process returns to the step of transmitting the calibration signal to the calibration device within the radar detection range.

[0186] As can be seen from the above, the application of this solution can accurately calibrate the interference signal of the radar, thereby obtaining accurate interference signal description information, and using relatively accurate interference signal description information to eliminate the interference signal, which can improve the accuracy of eliminating the interference signal.

[0187] The embodiment of the present invention further provides an electronic device, such as Figure 8 As shown, it includes a processor 801 , a communication interface 802 , a memory 803 and a communication bus 804 , wherein the processor 801 , the communication interface 802 and the memory 803 communicate with each other via the communication bus 804 .

[0188] Memory 803, used for storing computer programs;

[0189] The processor 801 is configured to execute the program stored in the memory 803, and implement the following steps:

[0190] coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal;

[0191] Adjusting the coupled radio frequency signal according to interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a radio frequency cancellation signal, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar receive signal, and the description information of the radio frequency cancellation signal is consistent with the description information of the interference signal;

[0192] Acquiring a target signal received by a receiving antenna of the radar;

[0193] The radio frequency cancellation signal is used to perform interference signal cancellation processing on the target signal to obtain a processed signal.

[0194] The communication bus mentioned in the electronic devices mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. This communication bus can be divided into address buses, data buses, control buses, etc. For ease of illustration, only a single thick line is used in the figure, but this does not mean that there is only one bus or only one type of bus.

[0195] The communication interface is used for communication between the above electronic device and other devices.

[0196] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage. Alternatively, the memory may be at least one storage device located away from the processor.

[0197] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

[0198] In another embodiment of the present invention, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a processor, the steps of any of the above-mentioned interference signal elimination methods are implemented.

[0199] In another embodiment of the present invention, a computer program product including instructions is provided. When the computer program product is run on a computer, the computer is enabled to execute any interference signal elimination method in the above embodiments.

[0200] In the above embodiments, all or part of the embodiments can be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present invention are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer, or a data storage device such as a server or data center that integrates one or more available media. The available medium can be magnetic media (e.g., floppy disk, hard disk, tape), optical media (e.g., DVD), or semiconductor media (e.g., solid-state disk (SSD)).

[0201] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0202] Each embodiment in this specification is described in a related manner. Similar portions between embodiments can be referenced to each other. Each embodiment focuses on the differences between other embodiments. In particular, since the apparatus, electronic device, computer-readable storage medium, and computer program product embodiments are generally similar to the method embodiments, their descriptions are relatively simplified. For related portions, reference can be made to the descriptions of the method embodiments.

[0203] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A method for eliminating interference signals, characterized in that: Applied to an interference signal elimination device installed in a radar, the method includes: coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal; Attenuating the signal strength of the coupled RF signal to a signal strength indicated by interference signal description information obtained by pre-calibration for an interference signal of the radar, to obtain a first intermediate signal; adjusting the phase of the first intermediate signal to a phase indicated by the interference signal description information, to obtain a RF cancellation signal, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar receive signal, and the description information of the RF cancellation signal is consistent with the description information of the interference signal; Acquiring a target signal received by a receiving antenna of the radar; Using the radio frequency cancellation signal, performing interference signal cancellation processing on the target signal to obtain a processed signal; The interference of radar's signals transmitted to the outside world on the radar's received signals is called radar's self-interference. The interference signal generated by radar's self-interference phenomenon is fixed and unchanged. The interference signal description information is obtained by calibrating the radar in the following manner: Transmitting a calibration signal to a calibration device within a detection range of the radar, wherein an initial value of a signal strength of the calibration signal is a preset strength; receiving an echo signal reflected by the calibration device; Detecting whether the signal amplitude of the echo signal is lower than a preset signal amplitude; If yes, determining that the description information of the echo signal is the interference signal description information; If not, a signal with a signal strength less than that of the calibration signal transmitted last time is used as a new calibration signal, and the process returns to the step of transmitting the calibration signal to the calibration device within the radar detection range.

2. The method according to claim 1, characterized in that The coupling of the radar's signal to be transmitted to obtain a coupled radio frequency signal includes: coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal having a polarity opposite to that of the signal to be transmitted; The utilizing the radio frequency cancellation signal to perform interference signal elimination processing on the target signal to obtain a processed signal includes: The radio frequency cancellation signal is combined with the target signal to obtain a processed signal.

3. The method according to claim 1, characterized in that The method further comprises: Before coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal, performing signal amplification processing on the signal to be transmitted; and / or The using the RF cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal includes: using the RF cancellation signal to perform interference signal cancellation processing on the target signal to obtain a second intermediate signal, and performing signal amplification processing on the second intermediate signal to obtain a processed signal.

4. An interference signal elimination device, characterized in that: The device is installed in a radar and includes a signal generating component, a signal processing component, and a signal eliminating component. The input interface of the signal generating component is connected to the RF transmitting channel of the radar, and different output interfaces of the signal generating component are respectively connected to the transmitting antenna of the radar and the input interface of the signal processing component. Different input interfaces of the signal eliminating component are respectively connected to the receiving antenna of the radar and the output interface of the signal processing component. The output interface of the signal eliminating component is connected to the RF receiving channel of the radar. The signal generating component is configured to obtain a signal to be transmitted in the radio frequency transmission channel, couple the signal to be transmitted to obtain a coupled radio frequency signal, send the signal to be transmitted to the transmitting antenna of the radar, and send the coupled radio frequency signal to the signal processing component; The signal processing component is configured to adjust the coupled RF signal according to interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a RF cancellation signal, and the signal processing component includes an attenuator and a phase shifter connected in series; the attenuator is configured to attenuate the signal strength of the signal input to the attenuator to the signal strength indicated by the interference signal description information; and the phase shifter is configured to adjust the phase of the signal input to the phase shifter to the phase indicated by the interference signal description information, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar received signal, and the description information of the RF cancellation signal is consistent with the description information of the interference signal. The signal cancellation component is configured to obtain a target signal received by the receiving antenna, perform interference signal cancellation processing on the target signal using the RF cancellation signal, obtain a processed signal, and output the processed signal through the output interface; The interference of radar's signals transmitted to the outside world on the radar's received signals is called radar's self-interference. The interference signal generated by radar's self-interference phenomenon is fixed and unchanged. The interference signal description information is obtained by calibrating the radar in the following manner: Transmitting a calibration signal to a calibration device within a detection range of the radar, wherein an initial value of a signal strength of the calibration signal is a preset strength; receiving an echo signal reflected by the calibration device; Detecting whether the signal amplitude of the echo signal is lower than a preset signal amplitude; If yes, determining that the description information of the echo signal is the interference signal description information; If not, a signal with a signal strength less than that of the calibration signal transmitted last time is used as a new calibration signal, and the process returns to the step of transmitting the calibration signal to the calibration device within the radar detection range.

5. The device according to claim 4, characterized in that The signal generating component is specifically used to couple the signal to be transmitted to obtain a coupled radio frequency signal with a polarity opposite to that of the signal to be transmitted; The signal cancellation component is specifically configured to combine the RF cancellation signal and the target signal to obtain a processed signal.

6. The device according to claim 5, characterized in that The signal generating assembly includes: a dielectric plate, the dielectric plate being inlaid with an input interface ground layer, an input interface signal line, a first output interface ground layer, a first output interface signal line, a second output interface ground layer, and a second output interface signal line, the dielectric plate also including a first metal via and a second metal via penetrating the dielectric plate; The input interface ground layer and the input interface signal line are both connected to the RF transmission channel, the first output interface ground layer and the first output interface signal line are both connected to the transmitting antenna, and the second output interface ground layer and the second output interface signal line are both connected to the signal processing component; The input interface signal line, the second output interface ground layer, and the first output interface signal line are located on the first surface of the dielectric board; The input interface ground layer, the second output interface signal line, and the first output interface ground layer are located on the second surface of the dielectric board; The input interface signal line is connected to the first metal via on one side of the first surface and the first output interface signal line, respectively; the second output interface signal line is connected to the first metal via on one side of the second surface; The input interface ground layer is respectively connected to the second metal via on one side of the second surface and the first output interface ground layer, and the second output interface ground layer is connected to the second metal via on one side of the first surface.

7. The device according to any one of claims 4 to 6, characterized in that The device further includes a first amplifying component, wherein an input interface of the first amplifying component is connected to the RF transmission channel, and an output interface of the first amplifying component is connected to an input interface of the signal generating component. The first amplifying component is configured to obtain the signal to be transmitted and amplify the signal to be transmitted. The signal generating component is specifically configured to obtain the signal to be transmitted after being amplified by the first amplifying component. and / or The device also includes a second amplifying component, the input interface of the second amplifying component is connected to the output interface of the signal elimination component, the output interface of the second amplifying component is connected to the RF receiving channel, the second amplifying component is used to obtain the processed signal output by the signal elimination component, amplify the obtained signal, and output the amplified processed signal through the output interface.

8. An interference signal elimination device, characterized in that: Applied to an interference signal elimination device, the interference signal elimination device is installed in a radar, and the device includes: A signal coupling module, configured to couple the radar's transmitted signal to obtain a coupled radio frequency signal; The signal adjustment module is specifically configured to: attenuate the signal strength of the coupled RF signal to a signal strength indicated by interference signal description information obtained by pre-calibration for an interference signal of the radar, to obtain a first intermediate signal; and adjust the phase of the first intermediate signal to a phase indicated by the interference signal description information, to obtain a RF cancellation signal, wherein the interference signal is a signal generated by the radar transmit signal that interferes with the radar received signal, and the description information of the RF cancellation signal is consistent with the description information of the interference signal. A signal acquisition module, configured to acquire a target signal received by a receiving antenna of the radar; a signal cancellation module, configured to use the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal; The interference of radar's signals transmitted to the outside world on the radar's received signals is called radar's self-interference. The interference signal generated by radar's self-interference phenomenon is fixed and unchanged. The interference signal description information is obtained by calibrating the radar in the following manner: Transmitting a calibration signal to a calibration device within a detection range of the radar, wherein an initial value of a signal strength of the calibration signal is a preset strength; receiving an echo signal reflected by the calibration device; Detecting whether the signal amplitude of the echo signal is lower than a preset signal amplitude; If yes, determining that the description information of the echo signal is the interference signal description information; If not, a signal with a signal strength less than that of the calibration signal transmitted last time is used as a new calibration signal, and the process returns to the step of transmitting the calibration signal to the calibration device within the radar detection range.

9. The device according to claim 8, characterized in that The signal coupling module is specifically used to: coupling the radar's signal to be transmitted to obtain a coupled radio frequency signal having a polarity opposite to that of the signal to be transmitted; The signal elimination module is specifically used to: The radio frequency cancellation signal is combined with the target signal to obtain a processed signal.

10. The device according to claim 8, characterized in that The device further comprises: A first amplification module is used to amplify the signal to be transmitted before coupling the signal to be transmitted of the radar to obtain a coupled radio frequency signal; and / or The signal elimination module is specifically configured to: utilize the radio frequency cancellation signal to perform interference signal elimination processing on the target signal to obtain a second intermediate signal; and perform signal amplification processing on the second intermediate signal to obtain a processed signal.

11. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory for storing computer programs; A processor, configured to implement the method steps described in any one of claims 1 to 3 when executing a program stored in a memory.

12. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 1 to 3 are implemented.

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