Interference signal elimination method, equipment and device

Abstract

The embodiment of the invention provides an interference signal elimination method, equipment and device, and relates to the technical field of radars, and the method comprises the steps: carrying out the coupling of a to-be-transmitted signal of a radar, and obtaining a coupled radio frequency signal; according to interference signal description information obtained by pre-calibrating an interference signal of the radar, the coupling radio frequency signal is adjusted to obtain a radio frequency cancellation signal, the interference signal is a signal which is generated by the radar transmitting signal and generates interference on the signal received by the radar, and the interference signal is a signal which is generated by the radar transmitting signal and generates interference on the signal received by the radar. The description information of the radio frequency cancellation signal is consistent with the description information of the interference signal; acquiring a target signal received by a receiving antenna of the radar; and performing interference signal elimination processing on the target signal by using the radio frequency cancellation signal to obtain a processed signal. By applying the scheme, the interference of the signal emitted by the radar to the outside on the signal received by the radar can be eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of radar, and particularly to a method, device and apparatus for eliminating interference signals. Background Art

[0002] A radar can transmit signals to the outside world and receive the signals reflected back from the outside world. However, the signals transmitted by the radar to the outside world will interfere with the signals received by the radar, resulting in the signals received by the radar being contaminated with interference signals, thereby reducing the accuracy of the signals received by the radar.

[0003] In view of this, a scheme 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 the interference of the signals transmitted by the radar to the outside world on the signals received by the radar. The specific technical solutions are as follows:

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

[0006] Couple the signal to be transmitted by the radar to obtain a coupled radio frequency signal;

[0007] Adjust the coupled radio frequency signal according to the interference signal description information calibrated in advance for the interference signals of the radar to obtain a radio frequency cancellation signal, where the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the radio frequency cancellation signal is consistent with the interference signal description information;

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

[0009] Use the radio frequency cancellation signal 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 installed in a radar, including a signal generation component, a signal processing component, and a signal cancellation component. The input interface of the signal generation component is connected to the radio frequency transmission channel of the radar, different output interfaces of the signal generation 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 cancellation component are respectively connected to the receiving antenna of the radar and the output interface of the signal processing component, and the output interface of the signal cancellation component is connected to the radio frequency receiving channel of the radar;

[0011] The signal generation component is configured to obtain the 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 is configured to adjust the coupled radio frequency signal according to the interference signal description information obtained by calibrating in advance for the interference signal of the radar to obtain a radio frequency cancellation signal, where the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the radio frequency cancellation signal is consistent with the interference signal description information;

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

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

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

[0016] A signal adjustment module, configured to adjust the coupled radio frequency signal according to the interference signal description information obtained by calibrating in advance for the interference signal of the radar to obtain a radio frequency cancellation signal, where the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the radio frequency cancellation signal is consistent with the interference signal description information;

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

[0018] 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.

[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. The processor, the communication interface, and the memory communicate with each other through the communication bus;

[0020] The memory is used to store a computer program;

[0021] A processor, when executing a program stored in a memory, implements the method steps described in the first aspect.

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

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

[0024] As can be seen from the above, when applying the solution provided by the embodiment of the present application to eliminate interference signals, after the signal generating component obtains a coupled RF signal through coupling, 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 calibrating in advance the interference signals of the radar. The interference signal of the radar refers to the signal that is generated by the radar transmitting signal and interferes with the signal received by the radar. The interference signal description information can be understood as the description information of the interference signal obtained by measuring this kind of interference of the radar 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 interference of the radar. In this way, using the RF cancellation signal to perform interference signal cancellation processing on the target signal can accurately eliminate the interference signal mixed in the target signal. Therefore, applying the interference signal cancellation solution provided by the embodiment of the present application can accurately eliminate the interference signal in the signal received by the radar due to the signal transmitted by the radar to the outside world, thereby improving the accuracy of the signal received by the radar. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other embodiments can also be obtained according to these drawings.

[0026] Figure 1a It is a schematic structural diagram of a radar provided by an embodiment of the present application;

[0027] Figure 1b It is a schematic structural diagram of a first interference signal cancellation device provided by an embodiment of the present application;

[0028] Figure 2a It is a schematic structural diagram of a signal processing component provided by an embodiment of the present application;

[0029] Figure 2b It is a schematic structural diagram of a second interference signal cancellation device provided by an embodiment of the present application;

[0030] Figure 3a Schematic diagram of the structure of the first surface of the signal generation component provided by the embodiment of the present application;

[0031] Figure 3b Schematic diagram of the structure of the second surface of the signal generation component provided by the embodiment of the present application;

[0032] Figure 4a Schematic diagram of the structure of the third interference signal cancellation device provided by the embodiment of the present application;

[0033] Figure 4b Schematic diagram of the structure of the fourth interference signal cancellation device provided by the embodiment of the present application;

[0034] Figure 4c Schematic diagram of the structure of the fifth interference signal cancellation device provided by the embodiment of the present application;

[0035] Figure 5 Schematic diagram of the flow of a method for canceling interference signals provided by the embodiment of the present application;

[0036] Figure 6 Schematic diagram of the flow of a calibration method provided by the embodiment of the present application;

[0037] Figure 7 Schematic diagram of the structure of an interference signal cancellation device provided by the embodiment of the present application;

[0038] Figure 8 Schematic diagram of the structure of an electronic device provided by the embodiment of the present application. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art based on the present application belong to the scope of protection of the present invention.

[0040] To eliminate the interference of the signals emitted by the radar to the signals received by the radar, the embodiments of the present application provide a method, device, and apparatus for canceling interference signals, which will be introduced one by one through specific embodiments below.

[0041] First, a description will be given of an interference signal cancellation device provided by the embodiment of the present application.

[0042] The interference signal cancellation device provided by the embodiment of the present application is installed in the radar. A partial schematic diagram of the radar when the interference signal cancellation device is not installed is as Figure 1aAs shown, the schematic diagram of part of the radar structure when the interference signal cancellation device is installed is as Figure 1b shown, Figure 1b It can also be regarded as the schematic diagram of the structure of the first interference signal cancellation device provided by the embodiment of the present application. The following will separately introduce Figure 1a and Figure 1b respectively.

[0043] Regarding Figure 1a , Figure 1a the structure shown includes a radio frequency transmission channel 101, a transmitting antenna 102, a radio frequency receiving channel 103, and a receiving antenna 104.

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

[0045] Regarding Figure 1b , Figure 1b Based on the structure shown in Figure 1a , it further includes a signal generating component 105, a signal processing component 106, and a signal cancellation component 107.

[0046] The following will explain the connection relationship between each component.

[0047] The input interface of the signal generating component 105 is connected to the radio frequency transmission channel 101 of the radar. The signal generating component 105 has two output interfaces. 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 cancellation component 107 has two input interfaces. Different input interfaces of the signal cancellation 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 cancellation component 107 is connected to the radio frequency receiving channel 103 of the radar.

[0048] The following will separately introduce the signal generating component 105, the signal processing component 106, and the signal cancellation component 107.

[0049] 1. Signal generating component 105

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

[0051] The input interface of the signal generation component 105 is connected to the RF transmission channel 101. When there is a signal to be transmitted in the RF transmission channel 101, the signal generation component 105 can receive the signal to be 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 coupling methods such as capacitive coupling and transformer coupling to obtain a coupled signal, which is used as the coupled RF signal.

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

[0053] In one embodiment of the present application, the above signal generation component 105 is a power splitter.

[0054] 2. Signal processing component 106

[0055] The signal processing component 106 is used to adjust the coupled RF signal according to the interference signal description information obtained by calibrating in advance for the interference signal of the radar to obtain a RF cancellation signal.

[0056] First, the above interference signal is described.

[0057] The interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar.

[0058] For a radar, the interference of the radar transmission signal on the radar received signal can be called the self-interference of the radar. With the rapid development of wireless communication and sensing technologies, the wireless signal transmission requirements of various applications are increasing continuously, and tend to be more complex and diverse. The self-interference phenomenon of the radar is becoming more and more common. Moreover, the size design of the radar tends to be miniaturized, and the hardware design size is becoming more and more compact. The radar transmission signal and the received signal share the same antenna, resulting in increasing difficulty in isolating the radar transmission signal and the received signal. However, the interference signal generated by the self-interference phenomenon of the radar is often fixed, that is, no matter how the signal transmitted and / or received by the radar changes, the intensity, phase, etc. of the interference signal generated by self-interference in the signal received by the radar are fixed.

[0059] In view of this, before the radar is put into actual use, the signals generated by the radar transmitting signal and interfering with the signals received by the radar can be calibrated in advance, that is, the interfering signals are measured in advance to obtain the description information of such interfering signals, such as the intensity, phase, etc. of the interfering signals.

[0060] The specific implementation method for calibrating the interfering signals of the radar can be seen in the subsequent embodiments and will not be elaborated here for the time being.

[0061] Secondly, the signal processing component 106 will be introduced.

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

[0063] Specifically, the signal processing component 106 can determine various signal description information of the coupled RF signal, compare it with the interfering signal description information to obtain the 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 intensity of the coupled RF signal is 2 and the signal intensity recorded in the interfering signal description information is 1, the signal processing component 106 can determine that the adjustment amount of the signal intensity is -1, so as to lower the signal intensity of the coupled RF signal from 2 to 1.

[0065] The specific internal structure of the signal processing component 106 can be seen in the subsequent embodiments and will not be elaborated here for the time being.

[0066] 3. Signal cancellation component 107

[0067] The signal cancellation component 107 is used to obtain the target signal received by the receiving antenna 104, use the RF cancellation signal to perform interference signal cancellation processing on the target signal to 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 a coupled RF signal with the same polarity as the signal to be transmitted, or it can couple a coupled RF signal with the opposite polarity to the signal to be transmitted. The following will explain these two situations respectively.

[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 radio frequency signal, a radio frequency cancellation signal with the same polarity as the coupled radio frequency signal can be obtained. Therefore, the radio frequency cancellation signal also has the same polarity as the signal to be transmitted. 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 radio frequency cancellation signal is the same as the polarity of the interference signal in the target signal. Thus, when the signal cancellation component 107 obtains a radio frequency cancellation signal with the same polarity as the signal to be transmitted, the radio frequency cancellation signal can be inverted. After inversion, the radio frequency cancellation signal has the opposite polarity to the interference signal in the target signal. At this time, the inverted radio frequency cancellation signal and the target signal are combined. In this way, the interference signal in the target signal and the inverted radio frequency cancellation signal cancel each other out, and the interference signal in the target signal is eliminated.

[0071] 3.2. The polarities of the coupled radio frequency signal and the signal to be transmitted are opposite

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

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

[0074] After the coupled radio frequency signal is adjusted by the signal processing component 106, the obtained radio frequency cancellation signal also has the opposite polarity to the signal to be transmitted. Since the interference signal in the target signal has the same polarity as the signal to be transmitted, the radio frequency cancellation signal has the opposite polarity to the interference signal in the target signal. Thus, when the signal cancellation component 107 obtains the radio frequency cancellation signal, the obtained radio frequency cancellation signal can be directly combined with the target signal. In this way, the radio frequency cancellation signal and the interference signal in the target signal cancel each other out, and the interference signal in the target signal is eliminated. In this manner, the signal cancellation component 107 does not need to perform the step of signal inversion and can directly combine the received radio frequency cancellation signal with the target signal, thus simplifying the steps of eliminating the interference signal and improving the efficiency of eliminating the interference signal.

[0075] In an embodiment of the present application, the above-mentioned signal cancellation component 107 is a combiner.

[0076] As can be seen from the above, when using the solution provided by the embodiments of the present application to eliminate interference signals, after the signal generating component 105 obtains the coupled RF signal through coupling, 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 interference signals of the radar. The interference signal of the radar refers to the signal generated by the radar transmitting signal that interferes with the signal received by the radar. The interference signal description information can be understood as the description information of the interference signal obtained by measuring this kind of interference of the radar in advance. Then, 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 interference of the radar. In this way, using the RF cancellation signal to perform interference signal cancellation processing on the target signal can accurately eliminate the interference signal mixed in the target signal. Therefore, applying the interference signal cancellation solution provided by the embodiments 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 receiving signal.

[0077] The internal structure of the signal processing component 106 will be 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 Figure 2a , which shows an internal structure of the signal processing component 106. In Figure 2a , the attenuator 106A and the phase shifter 106B are connected in series, and the attenuator 106A is in the front and the phase shifter 106B is in the back. The input interface of the attenuator 106A is connected to the output interface of the signal generating component 105 that outputs the coupled RF signal, and the output interface of the phase shifter 106B is connected to an input interface of the signal cancellation component 107.

[0080] On the basis of Figure 2a , the structure of the entire interference signal cancellation device is as shown in Figure 2b . In this device, the signal generating component 105, the attenuator 106A, the phase shifter 106B, and the signal cancellation component 107 are 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 the front and the attenuator 106A is in the back. The attenuator 106A and the phase shifter 106B are still connected in series. In this way, 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 will be introduced below.

[0083] 1. Attenuator 106A

[0084] The attenuator 106A is used 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 this strength and the signal strength recorded in the interference signal description information, attenuate the signal strength of the signal input to the attenuator 106A according to this signal strength difference to obtain an 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 for the attenuation operation. In this way, when the attenuator 106A receives a signal, it can directly attenuate the received signal to this target value, thus achieving attenuating the signal strength of the signal input to the attenuator 106A to the signal strength indicated by the interference signal description information.

[0087] 2. Phase shifter 106B

[0088] The phase shifter 106B is used 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 this phase and the phase recorded in the interference signal description information, perform a phase shift on the signal input to the phase shifter 106B according to this phase difference 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 for the phase shift operation. In this way, when the phase shifter 106B receives a signal, it can directly adjust the phase of the received signal to this target value, thus achieving adjusting the phase of the signal input to the phase shifter 106B to the phase indicated by the interference signal description information.

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

[0092] The output interface of the signal generation component 105 for outputting the coupled RF signal is connected to the input interface of the attenuator 106A. Therefore, when the signal generation component 105 obtains the coupled RF signal through coupling, it can send the coupled RF signal to the attenuator 106A. The attenuator 106A receives the coupled RF signal, attenuates the signal intensity of the coupled RF signal to obtain the attenuated signal, and sends the attenuated signal to the phase shifter 106B. The phase shifter 106B receives the attenuated signal, performs phase shifting on the attenuated signal to obtain the phase-shifted signal, which is used as the RF cancellation signal, and sends the RF cancellation signal to the signal cancellation component 107.

[0093] When the phase shifter 106B in the signal processing component 106 is in front and the attenuator 106A is behind, the processing order of the two is reversed. First, the phase shifter 106B performs phase shifting on the coupled RF signal, and then the attenuator 106A attenuates the signal intensity of the phase-shifted signal to obtain the RF cancellation signal.

[0094] As can be seen from the above, when applying the solution provided by the embodiments of the present application to eliminate interference signals, the signal processing component includes an attenuator and a phase shifter connected in series. The attenuator and the phase shifter can attenuate the signal and perform phase shifting on the coupled RF signal, so that the two types of information, namely the signal intensity and the phase, of the RF cancellation signal are consistent with the description information of the interference signal. Therefore, by using the RF cancellation signal, the interference signal mixed in the target signal can be accurately eliminated. Therefore, by applying the interference signal cancellation solution provided by the embodiments of the present application, the interference signal caused by the signal emitted by the radar to the outside in the signal received by the radar can be accurately eliminated, thereby improving the accuracy of the signal received by the radar.

[0095] Next, a structure of the signal generation component will be described.

[0096] In one embodiment of the present application, refer to Figure 3a 、 Figure 3b , which shows a schematic structural diagram of different surfaces of a signal generation component. Among them, the signal generation component includes: a dielectric plate 301, 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 embedded in the dielectric plate 301. The dielectric plate 301 also includes a first metal via 308 and a second metal via 309 passing through the dielectric plate 301.

[0097] Next, in combination with Figure 3a 、 Figure 3b The structure of the signal generation component shown, the connection relationship between the various components included in the signal generation component will be described.

[0098] Figure 3aThe first surface of the dielectric plate 301 is shown, on which the input interface signal line 303, the second output interface ground layer 306, and the first output interface signal line 305 are located. The input interface signal line 303 is respectively connected to one side of the first metal via 308 on the first surface and the first output interface signal line 305, and the second output interface ground layer 306 is connected to one side of the second metal via 309 on the first surface. Among them, the connection line L1 is the connection line between the input interface signal line 303 and the first output interface signal line 305, and the connection line L2 is the connection line between the input interface signal line 303 and one side of the first metal via 308 on the first surface.

[0099] Figure 3b The second surface of the dielectric plate 301 is shown. The first surface and the second surface are two opposite 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 this second surface. The input interface ground layer 302 is respectively connected to one side of the second metal via 309 on the second surface and the first output interface ground layer 304, and the second output interface signal line 307 is connected to one side of the first metal via 308 on the second surface. Among them, the connection line L3 is the connection line between the input interface ground layer 302 and the first output interface ground layer 304, and the connection line L4 is the connection line between the input interface ground layer 302 and one side of the second metal via 309 on the second surface.

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

[0101] The process of signal transmission inside this signal generating component will be described below.

[0102] Both the input interface ground layer 302 and the input interface signal line 303 are connected to the radio frequency transmission channel 101. When the signal to be transmitted in the radio frequency 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 by 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 to obtain a coupled radio frequency 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, by using the signal generating component with the above structure, the signal to be transmitted can be accurately coupled to obtain a coupled radio frequency signal. The signal to be transmitted is sent to the transmitting antenna through one output interface, and the coupled radio frequency signal is sent 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 by applying the interference signal elimination solution provided by the embodiments of the present application, the interference signal can be accurately eliminated, improving the accuracy of the radar received signal.

[0104] In one embodiment of the present application, the above-mentioned connection lines L1 and L3 can adopt double-sided parallel strip lines located on different surfaces of the dielectric plate 301 and parallel to each other, and the above-mentioned connection lines L2 and L4 can also adopt double-sided parallel strip lines.

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

[0106] In one embodiment of the present application, the above-mentioned interference signal elimination device further includes a first amplification component. The following will introduce the first amplification component in conjunction with Figure 4a the structural schematic diagram shown.

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

[0108] The first amplification component 108 is used to obtain the signal to be transmitted and perform signal amplification processing on the signal to be transmitted. In this way, the signal generating component 105 can also obtain the signal to be transmitted amplified by the first amplification component 108, so as to ensure that the signal generating component 105 can successfully couple to obtain a coupled radio frequency signal, thereby improving the reliability of interference signal elimination.

[0109] In another embodiment of the present application, the above-mentioned interference signal elimination device further includes a second amplification component. The following will introduce the second amplification component in conjunction with Figure 4b the structural schematic diagram shown.

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

[0111] The second amplification component 109 is used to obtain the processed signal output by the signal cancellation component 107, perform signal amplification processing on the obtained signal, and output the amplified processed signal through the output interface. This can enable the radio frequency receiving channel 103 to transmit an amplified and relatively stable signal, thereby ensuring that other signal processing components 106 of the radar can accurately process the signal transmitted in the radio frequency receiving channel 103, and further improving the radar accuracy.

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

[0113] For the introduction of the above first amplification component 108 and second amplification component 109, reference can be made to the above embodiments, and the structural schematic diagram of the interference signal cancellation device can be seen Figure 4c , which will not be elaborated here.

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

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

[0116] In an embodiment of the present application, refer to Figure 5 , a flowchart of an interference signal cancellation method is provided. In this embodiment, the above method is applied to an interference signal cancellation device, and the interference signal cancellation device is installed in a radar.

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

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

[0119] For the content of coupling the signal to be transmitted by the radar, reference can be made to the above introduction about the signal generation component, which will not be elaborated here.

[0120] Step S502: Adjust the coupled radio frequency signal according to the interference signal description information calibrated in advance for the interference signal of the radar to obtain a radio frequency cancellation signal.

[0121] Among them, the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the radio frequency cancellation signal is the same as the interference signal description information.

[0122] For the content of adjusting the coupled radio frequency signal, refer to the foregoing introduction to the signal processing component, which will not be elaborated here.

[0123] Step S503: Obtain the target signal received by the receiving antenna of the radar.

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

[0125] For the content of using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal, refer to the foregoing introduction to the signal cancellation component, which will not be elaborated here.

[0126] As can be seen from the above, when applying the solution provided by the embodiments of the present application to cancel the interference signal, after obtaining the coupled radio frequency signal by coupling, the coupled radio frequency signal is adjusted according to the interference signal description information, and the interference signal description information is information obtained by calibrating in advance the interference signal of the radar. The interference signal of the radar refers to the signal generated by the radar transmitting signal and interfering with the signal received by the radar. The interference signal description information can be understood as the description information of the interference signal obtained by measuring this kind of interference of the radar in advance. Therefore, the coupled radio frequency signal is adjusted according to this description information, so that the description information of the radio frequency cancellation signal obtained by the adjustment is consistent with the interference signal description information, that is, the radio frequency cancellation signal is the same as the interference signal generated by the above interference of the radar. In this way, using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal can accurately cancel the interference signal mixed in the target signal. Therefore, applying the interference signal cancellation solution provided by the embodiments of the present application can accurately cancel 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 signal received by the radar.

[0127] In an embodiment of the present application, when adjusting the coupled radio frequency signal, the signal strength of the coupled radio frequency signal can be attenuated to the signal strength represented by the interference signal description information obtained by calibrating in advance the interference signal of the radar to obtain a first intermediate signal; the phase of the first intermediate signal is adjusted to the phase represented by the interference signal description information to obtain a radio frequency cancellation signal.

[0128] As can be seen from the above, when applying the solution provided by the embodiments of the present application to cancel the interference signal, performing signal attenuation and phase shift on the coupled radio frequency signal can make the two kinds of information of the signal strength and phase of the radio frequency cancellation signal consistent with the interference signal description information. Therefore, using the radio frequency cancellation signal can accurately cancel the interference signal mixed in the target signal. Therefore, applying the interference signal cancellation solution provided by the embodiments of the present application can accurately cancel 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 signal received by the radar.

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

[0130] For the specific coupling method, reference can be made to the foregoing device embodiment and will not be elaborated here.

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

[0132] In this solution, the received radio frequency cancellation signal can be directly merged with the target signal, 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 signal to be transmitted by the radar to obtain a coupled radio frequency signal, the signal to be transmitted is amplified.

[0134] In this solution, the signal to be transmitted is amplified, so that the signal for coupling is the amplified signal to be transmitted, which can ensure that the device can successfully obtain the coupled radio frequency signal, and thus improve the reliability of interference signal cancellation.

[0135] In another embodiment of the present application, when using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal, the radio frequency cancellation signal is used to perform interference signal cancellation 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, which can make the processed signal an amplified and relatively stable signal, so as to ensure that other signal processing components of the radar can accurately process this signal, and thus improve the radar accuracy.

[0137] In yet another embodiment of the present application, before coupling the signal to be transmitted by the radar to obtain a coupled radio frequency signal, the signal to be transmitted is amplified; and when using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal, the radio frequency cancellation signal is used to perform interference signal cancellation processing on the target signal to obtain a second intermediate signal, and the second intermediate signal is amplified to obtain a processed signal. This can not only improve the reliability of interference signal cancellation, but also improve the radar accuracy.

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

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

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

[0141] Among them, the initial value of the signal intensity of the calibration signal is a preset intensity.

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

[0143] The above preset intensity is a signal intensity set in advance.

[0144] When the radar is calibrated for the first time, a calibration signal with a signal intensity of the preset intensity can 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 a preset signal amplitude. If so, execute step S604; if not, execute step S605.

[0147] Among them, the above preset signal amplitude is a signal amplitude set in advance.

[0148] Specifically, the above interference signal is a signal generated by the radar transmitting signal and interfering with the signal received by the radar, rather than a signal caused by external factors to the propagated signal after the radar transmits a signal to the outside world. No matter what signal the radar transmits to the outside world, it will interfere with the signal received by the radar. In fact, the signal received by the radar can be considered as: the signal obtained by superimposing the normal signal received from the outside world and the interference signal caused by the radar transmitting signal. As long as the radar reduces the signal intensity of the normal signal received from the outside world to a relatively small value, it can be approximately 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 intensity of the normal signal received by the radar from the outside world has been reduced to a relatively small value. At this time, the echo signal can be directly regarded as the interference signal, and thus 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 intensity of the normal signal received by the radar from the outside world is still relatively large. At this time, the echo signal cannot be regarded as the 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: Use the signal whose signal strength is less than that of the previously transmitted calibration signal as a new calibration signal, and return to Step S601.

[0153] As can be seen from the above, applying this solution can accurately calibrate the interference signal of the radar, so as to obtain accurate interference signal description information. Using the relatively accurate interference signal description information to eliminate the interference signal can improve the accuracy of eliminating the interference signal.

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

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

[0156] A signal coupling module 701, configured to couple the signal to be transmitted by the radar to obtain a coupled radio frequency signal;

[0157] A signal adjustment module 702, configured to adjust the coupled radio frequency signal according to the interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a radio frequency cancellation signal. The interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar. The description information of the radio frequency cancellation signal is consistent with the interference signal description information;

[0158] A signal acquisition module 703, configured to acquire the target signal received by the receiving antenna of the radar;

[0159] A signal cancellation module 704, configured to use the radio frequency 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 applying the solution provided by the embodiments of the present application to eliminate interference signals, after obtaining the coupled radio frequency signal by coupling, the coupled radio frequency signal is adjusted according to the interference signal description information, where the interference signal description information is information calibrated in advance for the interference signals of the radar, and the interference signal of the radar refers to the signal generated by the radar transmitting signal and interfering with the signal received by the radar. The interference signal description information can be understood as the description information of the interference signal measured in advance for this kind of interference of the radar. Thus, the coupled radio frequency signal is adjusted according to this description information, so that the description information of the radio frequency cancellation signal obtained by the adjustment is consistent with the interference signal description information, that is, the radio frequency cancellation signal is the same as the interference signal generated by the above interference of the radar. In this way, using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal can accurately eliminate the interference signals mixed in the target signal. Therefore, applying the interference signal cancellation solution provided by the embodiments of the present application can accurately eliminate the interference signals in the signals received by the radar due to the signals transmitted by the radar to the outside world, thereby improving the accuracy of the signals received by the radar.

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

[0162] Attenuate the signal strength of the coupled radio frequency signal to the signal strength represented by the interference signal description information calibrated in advance for the interference signals of the radar, to obtain a first intermediate signal;

[0163] Adjust the phase of the first intermediate signal to the phase represented by the interference signal description information, to obtain a radio frequency cancellation signal.

[0164] As can be seen from the above, when applying the solution provided by the embodiments of the present application to eliminate interference signals, performing signal attenuation and phase shift on the coupled radio frequency signal can make the two kinds of information, namely the signal strength and phase, of the radio frequency cancellation signal consistent with the interference signal description information. Thus, using the radio frequency cancellation signal can accurately eliminate the interference signals mixed in the target signal. Therefore, applying the interference signal cancellation solution provided by the embodiments of the present application can accurately eliminate the interference signals in the signals received by the radar due to the signals transmitted by the radar to the outside world, thereby improving the accuracy of the signals received by the radar.

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

[0166] Couple the signal to be transmitted by the radar to obtain a coupled radio frequency signal with a polarity opposite to that of the signal to be transmitted;

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

[0168] Combine the radio frequency cancellation signal with the target signal to obtain a processed signal.

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

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

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

[0172] In this solution, the signal to be transmitted is subjected to signal amplification processing, so that the signal for coupling is the amplified signal to be transmitted, which can ensure that the device can successfully couple to obtain a coupled radio frequency signal, and further improves the reliability of interference signal cancellation.

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

[0174] The signal cancellation module is specifically configured to: use the radio frequency cancellation signal to perform interference signal cancellation 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 subjected to signal amplification processing to obtain a processed signal, which can make the processed signal an amplified and relatively stable signal, so as to ensure that other signal processing components of the radar can accurately process this signal, and further improve the radar accuracy.

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

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

[0178] The signal cancellation module is specifically configured to: use the radio frequency cancellation signal to perform interference signal cancellation 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 cancellation, but also improve the radar accuracy.

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

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

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

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

[0184] If it is, determine that the description information of the echo signal is the description information of the interference signal;

[0185] If it is not, then use a signal with a signal strength less than that of the previously transmitted calibration signal as a new calibration signal, and return 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, applying this solution can accurately calibrate the interference signal of the radar, thereby obtaining accurate description information of the interference signal. Using the relatively accurate description information of the interference signal to eliminate the interference signal can improve the accuracy of eliminating the interference signal.

[0187] An embodiment of the present invention also provides an electronic device, as Figure 8 shown, including a processor 801, a communication interface 802, a memory 803, and a communication bus 804, where the processor 801, the communication interface 802, and the memory 803 complete communication with each other through the communication bus 804.

[0188] The memory 803 is used to store a computer program;

[0189] When the processor 801 is used to execute the program stored in the memory 803, the following steps are implemented:

[0190] Couple the signal to be transmitted by the radar to obtain a coupled radio frequency signal;

[0191] Adjust the coupled radio frequency signal according to the description information of the interference signal obtained by pre-calibrating the interference signal of the radar to obtain a radio frequency cancellation signal, where the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the radio frequency cancellation signal is consistent with the description information of the interference signal;

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

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

[0194] The communication bus mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

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

[0196] The memory can include a Random Access Memory (RAM), and can also include a Non-Volatile Memory (NVM), such as at least one disk memory. Optionally, the memory can also be at least one storage device located far from the aforementioned 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, discrete hardware components.

[0198] In another embodiment provided by the present invention, a computer-readable storage medium is also provided. A computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps of any of the above interference signal cancellation methods are implemented.

[0199] In another embodiment provided by the present invention, a computer program product containing instructions is also provided. When it runs on a computer, the computer is caused to execute any of the interference signal cancellation methods in the above embodiments.

[0200] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part 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 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 devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). 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 includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

[0201] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements but also other elements not expressly listed, or elements that are inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element.

[0202] Each embodiment in this specification is described in a related manner. The same or similar parts between the embodiments can be referred to each other, and the differences between each embodiment and other embodiments are emphasized. In particular, for the embodiments of the device, electronic device, computer-readable storage medium, and computer program product, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments.

[0203] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are all included within the protection scope of the present invention.

Claims

1. A method for eliminating interference signals, characterized in that, Applied to an interference signal cancellation device, which is installed in a radar, the method includes: Couple the signal to be transmitted by the radar to obtain a coupled radio frequency signal; Adjust the coupled radio frequency signal according to the interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a radio frequency cancellation signal, where the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the radio frequency cancellation signal is consistent with the interference signal description information; Obtain the target signal received by the receiving antenna of the radar; Use the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal.

2. The method according to claim 1, characterized in that The step of adjusting the coupled radio frequency signal according to the interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a radio frequency cancellation signal includes: Attenuate the signal strength of the coupled radio frequency signal to the signal strength represented by the interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a first intermediate signal; Adjust the phase of the first intermediate signal to the phase represented by the interference signal description information to obtain a radio frequency cancellation signal.

3. The method according to claim 1, characterized in that, The step of coupling the signal to be transmitted by the radar to obtain a coupled radio frequency signal includes: Couple the signal to be transmitted by the radar to obtain a coupled radio frequency signal with the opposite polarity to the signal to be transmitted; The step of using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal includes: Combine the radio frequency cancellation signal with the target signal to obtain a processed signal.

4. The method according to claim 1, wherein The method further includes: Before coupling the signal to be transmitted by the radar to obtain a coupled radio frequency signal, perform signal amplification processing on the signal to be transmitted; and / or The step of using the radio frequency cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal includes: using the radio frequency 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.

5. The method according to any one of claims 1-4, characterized in that The interference signal description information is obtained by calibrating the radar in the following manner: Transmit a calibration signal to a calibration device within the radar detection range, where the initial value of the signal strength of the calibration signal is a preset strength; Receive the echo signal reflected by the calibration device; Detect whether the signal amplitude of the echo signal is lower than a preset signal amplitude; If so, determine the description information of the echo signal as the interference signal description information; If not, use a signal with a signal strength less than that of the previously transmitted calibration signal as a new calibration signal, and return to the step of transmitting the calibration signal to the calibration device within the radar detection range.

6. An interference signal cancellation device, characterized in that, The device is installed in a radar and includes a signal generation component, a signal processing component, and a signal cancellation component. The input interface of the signal generation component is connected to the RF transmission channel of the radar. Different output interfaces of the signal generation 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 cancellation 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 cancellation component is connected to the RF receiving channel of the radar; The signal generation component is configured to obtain a signal to be transmitted in the RF transmission channel, couple the signal to be transmitted to obtain a coupled RF signal, send the signal to be transmitted to the transmitting antenna of the radar, and send the coupled RF signal to the signal processing component; The signal processing component is configured to adjust the coupled RF signal according to the interference signal description information obtained by pre-calibrating the interference signal of the radar, to obtain an RF cancellation signal, where the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the RF cancellation signal is consistent with the interference signal description information; The signal cancellation component is configured to obtain a target signal received by the receiving antenna, use the RF cancellation signal to perform interference signal cancellation processing on the target signal to obtain a processed signal, and output the processed signal through the output interface.

7. The device according to claim 6, characterized in that, 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; 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.

8. The device according to claim 6, characterized in that, The signal generation component is specifically configured to couple the signal to be transmitted to obtain a coupled RF 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.

9. The device according to claim 8, characterized in that, The signal generation component includes: a dielectric board, which is 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 board further includes a first metal via and a second metal via penetrating the dielectric board; Both the input interface ground layer and the input interface signal line are connected to the RF transmission channel. Both the first output interface ground layer and the first output interface signal line are connected to the transmitting antenna. Both the second output interface ground layer and the second output interface signal line are 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 lines are respectively connected to one side of the first metal via on the first surface and the first output interface signal lines, and the second output interface signal lines are connected to one side of the first metal via on the second surface; The input interface ground layer is respectively connected to one side of the second metal via on the second surface and the first output interface ground layer, and the second output interface ground layer is connected to one side of the second metal via on the first surface.

10. The device according to any one of claims 6-9, characterized in that, The device further includes a first amplification component, an input interface of the first amplification component is connected to the radio frequency transmission channel, an output interface of the first amplification component is connected to an input interface of the signal generation component, and the first amplification component is configured to obtain the signal to be transmitted and perform signal amplification processing on the signal to be transmitted; the signal generation component is specifically configured to obtain the signal to be transmitted amplified by the first amplification component; and / or The device further includes a second amplification component, an input interface of the second amplification component is connected to an output interface of the signal cancellation component, an output interface of the second amplification component is connected to the radio frequency reception channel, and the second amplification component is configured to obtain the processed signal output by the signal cancellation component, perform signal amplification processing on the obtained signal, and output the amplified processed signal through the output interface.

11. An interference signal cancellation device, characterized in that, Applied to an interference signal cancellation device, the interference signal cancellation device is installed in a radar, and the device includes: A signal coupling module, configured to couple the signal to be transmitted of the radar to obtain a coupled radio frequency signal; A signal adjustment module, 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, where the interference signal is: a signal generated by the radar transmission signal and interfering with the signal received by the radar, and the description information of the radio frequency cancellation signal is consistent with the interference signal description information; 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.

12. The device according to claim 11, wherein, The signal adjustment module is specifically configured to: Attenuate the signal strength of the coupled radio frequency signal to the signal strength represented by the interference signal description information obtained by pre-calibrating the interference signal of the radar to obtain a first intermediate signal; Adjust the phase of the first intermediate signal to the phase represented by the interference signal description information to obtain a radio frequency cancellation signal.

13. The device according to claim 11, wherein The signal coupling module is specifically configured to: Couple the signal to be transmitted of the radar to obtain a coupled radio frequency signal with a polarity opposite to that of the signal to be transmitted; The signal cancellation module is specifically configured to: Combine the radio frequency cancellation signal and the target signal to obtain a processed signal.

14. The device according to claim 11, characterized in that, The device further includes: A first amplification module, configured to perform signal amplification processing on the to-be-transmitted signal before coupling the to-be-transmitted signal of the radar to obtain a coupled radio frequency signal; and / or The signal cancellation module is specifically configured to: use the radio frequency cancellation signal to perform interference signal cancellation 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.

15. The device according to any one of claims 11-14, characterized in that, The interference signal description information is calibrated by the radar in the following manner: Transmit a calibration signal to a calibration device located within the detection range of the radar, where the initial value of the signal intensity of the calibration signal is a preset intensity; Receive an echo signal reflected by the calibration device; Detect whether the signal amplitude of the echo signal is lower than a preset signal amplitude; If so, determine the description information of the echo signal as the interference signal description information; If not, then use a signal whose signal intensity is less than the signal intensity of the previously transmitted calibration signal as a new calibration signal, and return to the step of transmitting the calibration signal to the calibration device located within the detection range of the radar.

16. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus. Among them, the processor, the communication interface, and the memory complete mutual communication through the communication bus; The memory is used to store computer programs; The processor is configured to, when executing the programs stored on the memory, implement the method steps described in any one of claims 1-5.

17. 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 the processor, it implements the method steps described in any one of claims 1-5.

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