A method and system for fast locking onto a target using small frequency steps

Abstract

The application relates to a method and system for quickly locking a target by using a small frequency step, the method comprising the following steps: sending a first detection signal to the surrounding environment and obtaining a first feedback signal of the first detection signal; analyzing the first feedback signal to obtain a dynamic frequency range; sending a detection signal to the surrounding environment again by using the dynamic frequency range, which is recorded as a second detection signal; obtaining a second feedback signal of the second detection signal and analyzing the second feedback signal to determine an interested target included in the second feedback signal, sending a small frequency step signal to the interested target, and locking the interested target by using a feedback signal of the small frequency step signal. The method and system for quickly locking a target by using a small frequency step disclosed by the application can lock a target by combining a large-range frequency screening with a small frequency step signal mode of a directional range, and the mode can further reduce the small frequency step range, so that the target loss probability is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data processing, and in particular to a method and system for quickly locking a target using a small frequency step. BACKGROUND

[0002] Frequency stepping technology is a technology widely used in modern radar and communication systems, which realizes wide-band coverage by equal-interval or non-equal-interval hopping in the frequency of the signal, and can obtain the frequency response of the target object in a short time, so it is suitable for high-resolution radar, spectrum monitoring and modern communication systems.

[0003] In principle, the frequency stepping signal changes the frequency of the continuous pulse, so that a single pulse can be processed using frequency domain analysis method. This is different from the traditional continuous wave radar, which uses a single frequency continuous wave for measurement. Frequency stepping technology can divide the wide-band signal into multiple narrow-band signals for processing, thereby simplifying the system design and improving the distance resolution and anti-interference ability.

[0004] However, frequency stepping technology needs to be adjusted multiple times to cover the possible frequency shift range of the target, which will cause the update rate to decrease. In addition, a small step needs to stay at each frequency point for a longer time, which will cause the average power to decrease. The decrease in update rate and average power may cause target loss, which needs further study. SUMMARY

[0005] The present application provides a method and system for quickly locking a target using a small frequency step, which uses a large range of frequency screening combined with a small frequency stepping signal in the direction range to lock the target. At the same time, this method further reduces the small frequency stepping range, which helps to reduce the target loss probability.

[0006] The above object of the present application is achieved by the following technical solution:

[0007] In a first aspect, the present application provides a method for quickly locking a target using a small frequency step, comprising:

[0008] sending a detection signal to the surrounding environment and obtaining a feedback signal of the detection signal;

[0009] analyzing the feedback signal to determine the frequency range of the feedback signal, denoted as the dynamic frequency range;

[0010] sending a detection signal to the surrounding environment using the dynamic frequency range, denoted as a second detection signal, the frequency of the second detection signal being within the dynamic frequency range;

[0011] A secondary detection feedback signal is obtained from the secondary detection signal, and the secondary detection feedback signal is analyzed to determine the target of interest included in the secondary detection feedback signal;

[0012] A small frequency step signal is sent to the target of interest, and the target of interest is locked using a feedback signal of the small frequency step signal.

[0013] In a possible implementation of the first aspect, when the primary detection signal is sent to the surrounding environment, the method further includes:

[0014] The antennas in the antenna matrix are grouped, and each antenna group includes at least one antenna;

[0015] The antenna groups are driven to send the primary detection signal to the surrounding environment, and the frequency of the primary detection signal sent by each antenna group is different;

[0016] Each antenna group is assigned a frequency range;

[0017] The frequency ranges used by adjacent antenna groups are non-adjacent frequency ranges;

[0018] When the antenna groups send the primary detection signal to the surrounding environment, the primary detection signal is sent using a unidirectional slope transmission mode.

[0019] In a possible implementation of the first aspect, the detection signal is sent to the surrounding environment using a dynamic frequency range again, and the method includes:

[0020] The antennas in the antenna matrix are grouped, and each antenna group includes at least one antenna;

[0021] The frequencies included in the dynamic frequency range are grouped according to the number of antenna groups, to obtain frequency groups, and the number of frequencies included in a frequency group is equal to the number of antenna groups;

[0022] Each time, only one frequency group is used to send the detection signal to the surrounding environment;

[0023] Each time, when the detection signal is sent to the surrounding environment, one of the two adjacent antenna groups is sent with a time lag in a time sequence, and the two adjacent antenna groups do not send the detection signal to the surrounding environment at the same time point.

[0024] In a possible implementation of the first aspect, when the small frequency step signal is sent to the target of interest, multiple antenna groups are used to lock the same target of interest;

[0025] The antenna groups include dynamic antenna groups and static antenna groups;

[0026] The static antenna group is always locked to one target of interest, the dynamic antenna group assists the static antenna group to lock to one target of interest, and the dynamic antenna group switches between multiple static antenna groups.

[0027] In a possible implementation of the first aspect, when the dynamic antenna group switches between multiple static antenna groups, the method further includes evaluating the locking effect of the static antenna group;

[0028] The evaluating the locking effect of the static antenna group includes:

[0029] Determining the moving direction and moving speed of the target of interest using at least one dynamic antenna group;

[0030] Calculating the moving acceleration of the target of interest;

[0031] Calculating the frequency offset of the corresponding static antenna group using the moving acceleration;

[0032] Evaluating the locking effect of the static antenna group according to the frequency offset, and when the absolute value of the frequency offset is greater than or equal to a set value, using the dynamic antenna group to assist the static antenna group to lock to the target of interest, and otherwise, only using the static antenna group to lock to the target of interest.

[0033] In a possible implementation of the first aspect, when the dynamic antenna group assists the static antenna group to lock to the target of interest, the dynamic antenna group uses a large-span frequency stepping mode to lock to the target of interest.

[0034] In a possible implementation of the first aspect, when the dynamic antenna group assists the static antenna group to lock to the target of interest, the method further includes:

[0035] Adjusting the aperture of the dynamic antenna group, and the aperture of each dynamic antenna group is different, and in a sequential sequence, the aperture of a previous dynamic antenna group is smaller than the aperture of a subsequent dynamic antenna group and is located inside the aperture of the subsequent dynamic antenna group.

[0036] Determining the moving position point of the target of interest;

[0037] According to the moving position points obtained in time sequence and connected in time sequence, obtaining the moving track of the target of interest.

[0038] In a second aspect, the application provides a device for quickly locking to a target using a small frequency step, including:

[0039] A first signal unit is configured to send a first detection signal to a surrounding environment and obtain a first feedback signal of the first detection signal.

[0040] The first processing unit is configured to analyze the first feedback signal and determine a frequency range of the first feedback signal, denoted as a dynamic frequency range.

[0041] The second signal unit is configured to send a second probe signal to the surrounding environment using the dynamic frequency range, wherein a frequency of the second probe signal is within the dynamic frequency range.

[0042] The second processing unit is configured to obtain a second probe feedback signal of the second probe signal and analyze the second probe feedback signal to determine a target of interest included in the second probe feedback signal.

[0043] The locking processing unit is configured to send a small frequency step signal to the target of interest and lock the target of interest using a feedback signal of the small frequency step signal.

[0044] In a third aspect, the present application provides a system for quickly locking a target using a small frequency step, the system comprising:

[0045] one or more memories configured to store instructions; and

[0046] one or more processors configured to invoke and run the instructions from the memories to perform the method as described in the first aspect and any possible implementation of the first aspect.

[0047] In a fourth aspect, the present application provides a computer readable storage medium, the computer readable storage medium comprising:

[0048] a program, when the program is run by a processor, the method as described in the first aspect and any possible implementation of the first aspect is performed.

[0049] In a fifth aspect, the present application provides a computer program product comprising program instructions, when the program instructions are run by a computing device, the method as described in the first aspect and any possible implementation of the first aspect is performed.

[0050] In a sixth aspect, the present application provides a chip system, the chip system comprising a processor configured to implement the functions involved in the above aspects, for example, generating, receiving, sending, or processing the data and / or information involved in the above methods.

[0051] The chip system can be composed of a chip, or can comprise a chip and other discrete devices.

[0052] In a possible design, the chip system further comprises a memory, the memory being configured to save necessary program instructions and data. The processor and the memory can be decoupled and arranged on different devices, connected through a wired or wireless manner, or the processor and the memory can be coupled on the same device. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic block diagram of the steps of a method for quickly locking a target using tiny frequency steps provided by the present application.

[0054] Figure 2 This is a schematic diagram of the principle of obtaining a dynamic frequency range provided by this application.

[0055] Figure 3 This is a schematic diagram provided by the present application of assigning a frequency band to each antenna group.

[0056] Figure 4 This is a schematic diagram of the principle of evaluating the locking effect of static antenna grouping provided by this application.

[0057] Figure 5 This is a schematic diagram of a dynamic antenna grouping added to a static antenna grouping provided by this application.

[0058] Figure 6 This is a schematic diagram of the movement trajectory of an object of interest provided in this application. DETAILED DESCRIPTION

[0059] The technical solution in this application is further described in detail below with reference to the accompanying drawings.

[0060] This application discloses a method for quickly locking a target using a small frequency step. Figure 1 In some examples, the method disclosed in this application for quickly locking a target using a small frequency step includes the following steps:

[0061] S101, sending a detection signal to the surrounding environment and obtaining a feedback signal of the detection signal;

[0062] S102, analyzing the primary feedback signal to determine a frequency range of the primary feedback signal, which is recorded as a dynamic frequency range;

[0063] S103, using the dynamic frequency range to send a detection signal to the surrounding environment again, which is recorded as a secondary detection signal. The frequency of the secondary detection signal is within the dynamic frequency range;

[0064] S104, obtaining a secondary detection feedback signal of the secondary detection signal and analyzing the secondary detection feedback signal to determine a target of interest included in the secondary detection feedback signal;

[0065] S105 , sending a small frequency step signal to the target of interest and using a feedback signal of the small frequency step signal to lock the target of interest.

[0066] Overall, in step S101, the phased array radar first sends a first detection signal to the surrounding environment and obtains a first feedback signal of the first detection signal, then in step S102, the first feedback signal is analyzed to determine the frequency range of the first feedback signal, denoted as a dynamic frequency range, as shown in Figure 2

[0067] The main purpose of analyzing the first feedback signal is to determine which frequency signal has better feedback quality, and then determine the frequency range of the first feedback signal according to the analysis result, where the frequency range of the first feedback signal is denoted as a dynamic frequency range.

[0068] The dynamic frequency range is used in subsequent steps.

[0069] In some possible implementations, for subsequent steps, the dynamic frequency range is continuously obtained or obtained at a set frequency, with the purpose of discovering available frequency ranges.

[0070] In step S103, the dynamic frequency range is used to send a detection signal to the surrounding environment again, where the detection signal is denoted as a second detection signal, and the frequency of the second detection signal is within the dynamic frequency range. The signal quality of the second detection signal is better, and the target in the surrounding environment can be more accurately detected.

[0071] In step S104, a second detection feedback signal of the second detection signal is obtained and analyzed to determine the target of interest included in the second detection feedback signal, where the target of interest refers to the target detected by the phased array radar, which can also be referred to as a tracking object. Finally, in S105, a small frequency step signal is sent to the target of interest, and the feedback signal of the small frequency step signal is used to lock the target of interest.

[0072] In the above manner, the second detection signal is used in the coarse adjustment stage, which uses a large step (such as 1 kHz-5 kHz) to quickly approach the target frequency; sending a small frequency step signal belongs to the fine adjustment stage, which switches to a small step (such as 10-100 Hz) for fine adjustment.

[0073] The range of the small frequency step signal in step S105 is also referred to the frequency range when the target of interest included in the second detection feedback signal is determined, that is, when the target of interest included in the second detection feedback signal is determined, it is known that the target of interest reacts at which frequencies, and these frequencies form a frequency range for the small frequency step signal.

[0074] In some examples, when the first detection signal is sent to the surrounding environment, the following content is also added:

[0075] ​S201, group the antennas in the antenna matrix, each antenna group including at least one antenna;

[0076] S202, drive the antenna groups to send a one-time probe signal to the surrounding environment, the frequency of the one-time probe signal sent by each antenna group being different;

[0077] wherein each antenna group is assigned a frequency band;

[0078] The frequency bands used by adjacent antenna groups are non-adjacent frequency bands;

[0079] When the antenna groups send a one-time probe signal to the surrounding environment, a one-way slope transmission method is used to send the one-time probe signal.

[0080] In steps S201 and S202, as shown in Figure 3 The antenna matrix is grouped to quickly reduce the transmission time of the one-time probe signal. Specifically, each antenna group is assigned a frequency band. When multiple antenna groups work synchronously, the required frequency range can be quickly exhausted, so that subsequent steps can be performed in a shorter time range.

[0081] At the same time, adjacent antenna groups use non-adjacent frequency bands to avoid signal interference between antenna groups when the frequencies are close. When the antenna groups send a one-time probe signal to the surrounding environment, a one-way slope transmission method is used to send the one-time probe signal, that is, the slopes are all positive or all negative.

[0082] In some examples, the specific way of using a dynamic frequency range to send a probe signal to the surrounding environment again is as follows:

[0083] S301, group the antennas in the antenna matrix, each antenna group including at least one antenna;

[0084] S302, group the frequencies included in the dynamic frequency range according to the number of antenna groups to obtain frequency groups, the number of frequencies included in a frequency group being equal to the number of antenna groups;

[0085] S303, use only one frequency group to send a probe signal to the surrounding environment each time;

[0086] Wherein, when sending a probe signal to the surrounding environment each time, one of the two adjacent antenna groups is sent with a lag in time sequence, and the two adjacent antenna groups do not send a probe signal to the surrounding environment at the same time.

[0087] In steps S301 to S303, the antennas in the antenna matrix are first grouped, and then the frequencies included in the dynamic frequency range are grouped according to the number of antenna groups, and it is required that the number of frequencies included in one frequency group is equal to the number of antenna groups.

[0088] Then, the probe signal is sent to the surrounding environment, and it is required that the probe signal is sent to the surrounding environment using only one frequency group each time, and one of the two adjacent antenna groups is sent with a lag in time sequence, and the two adjacent antenna groups do not send the probe signal to the surrounding environment at the same time point.

[0089] This way is to multiplex the antennas, and from the perspective of the same antenna, the continuous frequency change needs more accurate control because the span is small, but when the span increases, the control difficulty will correspondingly decrease.

[0090] Therefore, the present application uses the way of using multiple antennas to form a sequence to realize the small span change of the frequency when sending the probe signal to the surrounding environment, and each antenna uses the large span frequency change way, and the signal sending accuracy and control difficulty are considered.

[0091] In some examples, when sending the micro frequency step signal to the target of interest, multiple antenna groups are used to lock the same target of interest, so as to reduce the loss probability of the target of interest, but at this time, part of the antennas will become useless consumption.

[0092] The present application uses the following way to solve the problem:

[0093] The antenna group includes a dynamic antenna group and a static antenna group, the static antenna group always locks one target of interest, and the dynamic antenna group assists the static antenna group to lock one target of interest, and the dynamic antenna group switches between multiple static antenna groups, as shown in Figure 4 and Figure 5 .

[0094] The core purpose of the above-mentioned way is to realize the assistance of multiple static antenna groups through the switching of the dynamic antenna group, when a static antenna group needs assistance, the dynamic antenna group joins and helps the static antenna group, when the static antenna group can lock the target of interest, the dynamic antenna group leaves and participates in the help or evaluation of other static antenna groups.

[0095] In the above content, when the dynamic antenna group switches between multiple static antenna groups, the locking effect of the static antenna group needs to be evaluated, and the specific way is as follows:

[0096] determining the moving direction and moving speed of the target of interest using at least one dynamic antenna group;

[0097] calculating the moving acceleration of the target of interest;

[0098] calculating the frequency offset of the corresponding static antenna group using the moving acceleration;

[0099] evaluating the locking effect of the static antenna group according to the frequency offset, and using the dynamic antenna group to assist the static antenna group to lock the target of interest when the absolute value of the frequency offset is greater than or equal to a set value, otherwise only using the static antenna group to lock the target of interest.

[0100] In the above manner, the moving direction and moving speed of the target of interest need to be determined first, then the moving acceleration of the target of interest is calculated according to the moving direction and moving speed, and finally the frequency offset of the corresponding static antenna group is calculated using the moving acceleration.

[0101] It should be understood that the moving target will cause the frequency offset of the echo signal (Doppler effect), and the small step is more sensitive to the frequency shift, for example, a high-speed target (such as a fighter) may produce a Doppler frequency shift of tens of kHz, far exceeding the step resolution (such as 100 Hz), that is, when the target moves quickly, the frequency step adjustment speed may not keep up with the Doppler change, at this time, the dynamic antenna group needs to be added.

[0102] In the above content, the frequency offset is a parameter value obtained by combining the system performance with the test, which is not limited here, when the absolute value of the frequency offset is greater than or equal to a set value, the dynamic antenna group is used to assist the static antenna group to lock the target of interest, otherwise only the static antenna group is used to lock the target of interest.

[0103] In some possible implementations, when the dynamic antenna group is used to assist the static antenna group to lock the target of interest, the dynamic antenna group uses a large-span frequency step manner to lock the target of interest.

[0104] In another possible implementation, the dynamic antenna group and the static antenna group work in the following manner:

[0105] First, the single step length (the number of frequencies) of the determined step frequency is determined, and the number of frequencies in the single step length is equal to the sum of the number of groups of the dynamic antenna group and the static antenna group;

[0106] Then, the dynamic antenna group and the static antenna group work simultaneously using a single step length, and each frequency number in the single step length is allocated, and one dynamic antenna group / static antenna group is responsible for one frequency;

[0107] After the use of a single step length, the next single step length is sequentially used.

[0108] In some examples, the method of using dynamic antenna grouping to assist static antenna grouping to lock the target of interest further comprises the following:

[0109] S401, adjusting the aperture of the dynamic antenna grouping, the aperture of each dynamic antenna grouping is different, and in the order sequence, the aperture of the previous dynamic antenna grouping is smaller than the aperture of the subsequent dynamic antenna grouping and the aperture of the previous dynamic antenna grouping is inside the aperture of the subsequent dynamic antenna grouping;

[0110] S402, determining the moving position point of the target of interest;

[0111] S403, obtaining the moving track of the target of interest according to the time sequence connection of the moving position points (each moving position point has a time T and a speed V) obtained.

[0112] The contents in steps S401 to S403 show a way of quickly obtaining the moving track of the target of interest, in which the aperture of the dynamic antenna grouping is first adjusted, and the requirements are as follows: Figure 6 The aperture of each dynamic antenna grouping is different;

[0113] In the order sequence, the aperture of the previous dynamic antenna grouping is smaller than the aperture of the subsequent dynamic antenna grouping and the aperture of the previous dynamic antenna grouping is inside the aperture of the subsequent dynamic antenna grouping;

[0114] The above way can obtain a multi-ring structure, which can quickly detect the position of the target of interest, and the moving track of the target of interest can be obtained by sequentially connecting the moving position points of the target of interest obtained, each point on the moving track of the target of interest has a position and a time, according to which the moving speed of the target of interest in each segment can be calculated, and then the acceleration can be calculated according to the moving speed.

[0115] According to the obtained acceleration, the frequency offset of the corresponding static antenna grouping can be derived, which is described in the foregoing content and will not be repeated here.

[0116] A simplified processing method is to directly use the acceleration instead of the frequency offset.

[0117] The application also provides a device for quickly locking the target using a small frequency step, comprising:

[0118] A first signal unit is configured to send a first detection signal to the surrounding environment and obtain a first feedback signal of the first detection signal;

[0119]

[0120] ​The first processing unit is configured to analyze the first feedback signal and determine a frequency range of the first feedback signal, which is referred to as a dynamic frequency range.

[0121] The second signal unit is configured to send a second detection signal to the surrounding environment using the dynamic frequency range, and the frequency of the second detection signal is within the dynamic frequency range.

[0122] The second processing unit is configured to obtain a second detection feedback signal of the second detection signal and analyze the second detection feedback signal to determine an interested target included in the second detection feedback signal.

[0123] The locking processing unit is configured to send a small frequency step signal to the interested target and lock the interested target using a feedback signal of the small frequency step signal.

[0124] Further, when sending the first detection signal to the surrounding environment, the method further includes:

[0125] The antennas in the antenna matrix are grouped, and each antenna group includes at least one antenna.

[0126] The antenna groups are driven to send the first detection signal to the surrounding environment, and the frequency of the first detection signal sent by each antenna group is different.

[0127] Each antenna group is assigned a frequency segment.

[0128] Adjacent antenna groups use non-adjacent frequency segments.

[0129] When the antenna groups send the first detection signal to the surrounding environment, a one-way slope transmission mode is used to send the first detection signal.

[0130] Further, sending the second detection signal to the surrounding environment using the dynamic frequency range includes:

[0131] The antennas in the antenna matrix are grouped, and each antenna group includes at least one antenna.

[0132] The frequencies included in the dynamic frequency range are grouped according to the number of antenna groups to obtain frequency groups, and the number of frequencies included in a frequency group is equal to the number of antenna groups.

[0133] Each time, only one frequency group is used to send the detection signal to the surrounding environment.

[0134] Each time, one of the two adjacent antenna groups is sent with a time lag when sending the detection signal to the surrounding environment, and the two adjacent antenna groups do not send the detection signal to the surrounding environment at the same time.

[0135] Further, when sending the micro frequency step signal to the target of interest, a plurality of antenna groups are used to lock the same target of interest;

[0136] The antenna groups include dynamic antenna groups and static antenna groups;

[0137] The static antenna groups always lock a target of interest, the dynamic antenna groups assist the static antenna groups to lock the target of interest, and the dynamic antenna groups switch among the static antenna groups.

[0138] Further, when the dynamic antenna groups switch among the static antenna groups, the locking effect of the static antenna groups is evaluated;

[0139] The evaluation of the locking effect of the static antenna groups includes:

[0140] The moving direction and speed of the target of interest are determined using at least one dynamic antenna group;

[0141] The moving acceleration of the target of interest is calculated;

[0142] The frequency offset of the corresponding static antenna group is calculated using the moving acceleration;

[0143] The locking effect of the static antenna group is evaluated according to the frequency offset, when the absolute value of the frequency offset is greater than or equal to a set value, the dynamic antenna group is used to assist the static antenna group to lock the target of interest, otherwise, the target of interest is locked only by the static antenna group.

[0144] Further, when the dynamic antenna group is used to assist the static antenna group to lock the target of interest, the dynamic antenna group uses a large-span frequency step method to lock the target of interest.

[0145] Further, when the dynamic antenna group is used to assist the static antenna group to lock the target of interest, it further includes:

[0146] The aperture of the dynamic antenna group is adjusted, and the aperture of each dynamic antenna group is different, and in the order sequence, the aperture of the previous dynamic antenna group is smaller than the aperture of the subsequent dynamic antenna group and is located inside the aperture of the subsequent dynamic antenna group.

[0147] The moving position point of the target of interest is determined;

[0148] According to the moving position points obtained in time sequence, the moving track of the target of interest is obtained.

[0149] In one example, the units in any of the above apparatuses can be one or more integrated circuits, configured to implement one or more of the above methods, e.g., one or more application specific integrated circuits (ASICs), or, one or more digital signal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0150] For another example, when the units in the apparatuses can be implemented in the form of a processing element scheduler, the processing element can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke a program. For yet another example, these units can be integrated together, implemented in the form of a system-on-a-chip (SOC).

[0151] In the present application, various messages / information / devices / network elements / systems / apparatuses / actions / operations / processes / concepts, etc. can be named, and it can be understood that these specific names do not constitute a limitation on the related objects, and the names can be changed according to the scene, context or usage habits, etc. The technical meaning of the technical terms in the present application should be mainly determined from the function and technical effect embodied / implemented in the technical scheme.

[0152] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, apparatus and unit can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0153] In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely schematic, and the division of the units is merely a logical function division. In actual implementation, another division manner can be used, for example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0154] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0155] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical scheme. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0156] It should also be understood that in various embodiments of the present application, first, second, etc. are only to represent that a plurality of objects are different. For example, the first time window and the second time window are only to represent different time windows. The above first, second, etc. should not have any effect on the time window itself, and should not limit the embodiments of the present application.

[0157] It should also be understood that in various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0158] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical scheme of the present application or the part of the technical scheme that essentially contributes to the prior art or the part of the technical scheme can be embodied in the form of a software product, which is stored in a computer readable storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in various embodiments of the present application. The aforementioned computer readable storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and various program code storage media.

[0159] The present application also provides a system for quickly locking a target using a small frequency step, the system comprising:

[0160] one or more memories for storing instructions; and

[0161] one or more processors for invoking and running the instructions from the memory to perform the methods described above.

[0162] The present application also provides a computer program product including instructions, which when executed, cause the terminal device and the network device to perform the operations of the terminal device and the network device corresponding to the above methods.

[0163] The present application also provides a chip system including a processor for implementing the functions involved in the above description, such as generating, receiving, sending, or processing the data and / or information involved in the above methods.

[0164] The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0165] The processor mentioned in any of the above can be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the programs of the above feedback information transmission method.

[0166] In a possible design, the chip system further includes a memory, which is configured to store necessary program instructions and data. The processor and the memory can be decoupled and arranged on different devices, and connected through wired or wireless means to support the chip system to implement various functions in the above embodiments. Alternatively, the processor and the memory can be coupled on the same device.

[0167] Optionally, the computer instructions are stored in the memory.

[0168] Optionally, the memory is a storage unit in the chip, such as a register, a cache, etc. The memory can also be a storage unit in the terminal located outside the chip, such as a ROM or other type of static storage device that can store static information and instructions, a RAM, etc.

[0169] It can be understood that the memory in the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.

[0170] The non-volatile memory can be a ROM, a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory.

[0171] The volatile memory can be a RAM used as an external cache. RAM has many different types, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synch link DRAM (SLDRAM), and direct Rambus RAM.

[0172] The embodiments of the present disclosure are all the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A method for quickly locking a target using a small frequency step, characterized in that: include: Send a detection signal to the surrounding environment and receive a feedback signal of the detection signal; Analyze the primary feedback signal to determine the frequency range of the primary feedback signal, which is recorded as the dynamic frequency range; Use the dynamic frequency range to send a detection signal to the surrounding environment again, which is recorded as a secondary detection signal. The frequency of the secondary detection signal is within the dynamic frequency range; Obtaining a secondary detection feedback signal of the secondary detection signal and analyzing the secondary detection feedback signal to determine a target of interest included in the secondary detection feedback signal; Sending a small frequency step signal to a target of interest and using a feedback signal of the small frequency step signal to lock the target of interest; When sending a small frequency step signal to the target of interest, multiple antennas are grouped to lock onto the same target of interest; Antenna grouping includes dynamic antenna grouping and static antenna grouping, and the dynamic antenna grouping and the static antenna grouping have different frequency bands; The static antenna grouping always locks onto one target of interest, the dynamic antenna grouping assists the static antenna grouping in locking onto one target of interest, and the dynamic antenna grouping switches between multiple static antenna groups; The locking effect of the static antenna grouping is evaluated based on the frequency offset. When the absolute value of the frequency offset is greater than or equal to the set value, the dynamic antenna grouping is used to assist the static antenna grouping in locking the target of interest. Otherwise, the target of interest is locked only by the static antenna grouping. When dynamic antenna grouping is used to assist static antenna grouping in locking the target of interest, the dynamic antenna grouping uses a large-span frequency stepping method to lock the target of interest; When dynamic antenna grouping is used to assist static antenna grouping in locking onto a target of interest, the following also applies: Adjusting the aperture of the dynamic antenna groupings, where the aperture of each dynamic antenna grouping is different, and in a sequential order, the aperture of the previous dynamic antenna grouping is smaller than the aperture of the next dynamic antenna grouping, and the aperture of the previous dynamic antenna grouping is located inside the aperture of the next dynamic antenna grouping; Determine the moving location of the target of interest; The moving position points obtained are connected according to the time sequence obtained on the time series to obtain the moving trajectory of the target of interest.

2. The method for rapidly locking a target using minute frequency steps according to claim 1, wherein: When a detection signal is sent to the surrounding environment, it also includes: The antennas in the antenna matrix are grouped, each antenna group including at least one antenna; The antenna group is driven to send a detection signal to the surrounding environment. The frequency of the detection signal sent by each antenna group is different. Wherein, a frequency segment is assigned to each antenna group; The frequency bands used by adjacent antenna groups are non-adjacent frequency bands; When the antenna group sends a detection signal to the surrounding environment, the detection signal is sent using a unidirectional slope sending method.

3. The method for rapidly locking a target using minute frequency steps according to claim 1, wherein: Using the dynamic frequency range to resend the detection signal to the surrounding environment includes: The antennas in the antenna matrix are grouped, each antenna group including at least one antenna; Grouping the frequencies included in the dynamic frequency range according to the number of antenna groups to obtain frequency groups, wherein the number of frequencies included in a frequency group is equal to the number of antenna groups; Only one frequency group is used at a time to send a detection signal to the surrounding environment; Each time a detection signal is sent to the surrounding environment, a delayed sending process is performed on one of two adjacent antenna groups in a time sequence, and the two adjacent antenna groups do not send the detection signal to the surrounding environment at the same time point.

4. The method for rapidly locking a target using minute frequency steps according to claim 1, wherein: Obtaining the frequency offset includes: determining a moving direction and a moving speed of a target of interest using at least one dynamic antenna grouping; Calculate the movement acceleration of the target of interest; The frequency offset corresponding to the static antenna grouping is calculated using the mobile acceleration.

5. A device for rapidly locking onto a target using minute frequency steps, characterized in that: include: A first signal unit is used to send a detection signal to the surrounding environment and obtain a feedback signal of the detection signal; The first processing unit is configured to analyze the primary feedback signal and determine a frequency range of the primary feedback signal, which is recorded as a dynamic frequency range; The second signal unit is used to send a detection signal to the surrounding environment again using the dynamic frequency range, which is recorded as a secondary detection signal. The frequency of the secondary detection signal is within the dynamic frequency range; a second processing unit, configured to obtain a secondary detection feedback signal of the secondary detection signal and analyze the secondary detection feedback signal to determine a target of interest included in the secondary detection feedback signal; a locking processing unit, configured to send a small frequency step signal to a target of interest and lock the target of interest using a feedback signal of the small frequency step signal; When sending a small frequency step signal to the target of interest, multiple antennas are grouped to lock onto the same target of interest; Antenna grouping includes dynamic antenna grouping and static antenna grouping, and the dynamic antenna grouping and the static antenna grouping have different frequency bands; The static antenna grouping always locks onto one target of interest, the dynamic antenna grouping assists the static antenna grouping in locking onto one target of interest, and the dynamic antenna grouping switches between multiple static antenna groups; The locking effect of the static antenna grouping is evaluated based on the frequency offset. When the absolute value of the frequency offset is greater than or equal to the set value, the dynamic antenna grouping is used to assist the static antenna grouping in locking the target of interest. Otherwise, the target of interest is locked only by the static antenna grouping. When dynamic antenna grouping is used to assist static antenna grouping in locking the target of interest, the dynamic antenna grouping uses a large-span frequency stepping method to lock the target of interest; When dynamic antenna grouping is used to assist static antenna grouping in locking onto a target of interest, the following also applies: Adjusting the aperture of the dynamic antenna groupings, where the aperture of each dynamic antenna grouping is different, and in a sequential order, the aperture of the previous dynamic antenna grouping is smaller than the aperture of the next dynamic antenna grouping, and the aperture of the previous dynamic antenna grouping is located inside the aperture of the next dynamic antenna grouping; Determine the moving location of the target of interest; The moving position points obtained are connected according to the time sequence obtained on the time series to obtain the moving trajectory of the target of interest.

6. A system for rapidly locking onto a target using minute frequency steps, characterized in that: The system comprises: one or more memories for storing instructions; and One or more processors, configured to call and execute the instructions from the memory to perform the method according to any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium comprises: The program, when executed by a processor, executes the method according to any one of claims 1 to 4.

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