CN114338329A - Method, device, equipment and medium for realizing detection and communication integrated waveform - Google Patents

Method, device, equipment and medium for realizing detection and communication integrated waveform Download PDF

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CN114338329A
CN114338329A CN202111661264.8A CN202111661264A CN114338329A CN 114338329 A CN114338329 A CN 114338329A CN 202111661264 A CN202111661264 A CN 202111661264A CN 114338329 A CN114338329 A CN 114338329A
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phase
cpm
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lfm
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CN114338329B (en
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张彧
孙文亮
高忱轩
吴义辰
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Tsinghua University
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Abstract

The application relates to the technical field of communication, in particular to a method, a device, equipment and a medium for realizing a detection and communication integrated waveform, wherein the method comprises the following steps: determining the quantization precision of the continuous phase modulation CPM signal phase according to the target parameter, and generating a CPM phase sequence; based on the CPM phase sequence, obtaining a difference result of the quantized linear frequency modulation LFM signal according to the relevant parameters of the waveform; processing the difference result according to the parallel path number of the digital-to-analog converter to obtain processed data; accumulating the at least one processed data to generate a phase sequence of the LFM signal; the CPM signal phase is added to the phase sequence and a baseband signal is generated by a trigonometric function lookup table. Therefore, the problems that circuit resources are greatly consumed and the quantization precision of the CPM signal phase is lost due to the fact that the LFM-CPM integrated signal generating circuit in the related technology adopts high-bit width quantization processing LFM signal phase and adopts a bit interception mode to be added with the CPM signal phase are solved.

Description

Method, device, equipment and medium for realizing detection and communication integrated waveform
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a medium for implementing a detection and communication integrated waveform.
Background
With the continuous development of the detection and communication technology, the difference between the working frequency band and the system composition of the detection and communication is gradually reduced, and the working frequency band for communication transmission and the detection use frequency are partially overlapped, so that the integration of the detection and the communication becomes possible. The detection and communication are integrally designed, so that not only can hardware resources be integrated and shared, but also deep information fusion can be performed, and the environment can be sensed while information is efficiently transmitted.
The detection and communication integrated waveform system is characterized in that radar waveforms and communication waveforms are overlapped on time and frequency domains, and radar signal processing and communication signal processing are respectively carried out on the integrated waveforms at a receiving end. An integrated waveform obtained by superposing an LFM (linear frequency Modulation) signal and a CPM (continuous Phase Modulation) signal has the property of constant envelope, and can effectively avoid signal distortion caused by nonlinearity of a power amplifier, so that the Linear Frequency Modulation (LFM) signal has better detection performance and communication performance.
The LFM-CPM integrated signal is generated in a manner that an LFM signal is used as a carrier and a CPM signal is loaded on a phase, a phase expression of the LFM signal is a quadratic function, and the phase of the LFM signal needs to be quantized with high bit width in the conventional circuit design, so that the problems of high circuit resource consumption and loss of the phase quantization precision of the CPM signal caused by accumulated errors are avoided, and the problem needs to be solved urgently.
Disclosure of Invention
The application provides a method, a device, equipment and a medium for realizing a detection and communication integrated waveform, which aim to solve the problems that in the related art, an LFM-CPM integrated signal generating circuit adopts high-bit width quantization to process the LFM signal phase and adopts a bit interception mode to add with the CPM signal phase, so that the circuit resource consumption is high and the CPM signal phase quantization precision is lost.
An embodiment of a first aspect of the present application provides a method for implementing a detection and communication integrated waveform, including the following steps:
determining the quantization precision of the continuous phase modulation CPM signal phase according to the target parameter, and generating a CPM phase sequence;
based on the CPM phase sequence, obtaining a difference result of the quantized linear frequency modulation LFM signal according to the relevant parameters of the waveform;
processing the difference result according to the parallel path number of the digital-to-analog converter to obtain processed data;
accumulating the at least one processed data to generate a phase sequence of the LFM signal;
and adding the CPM signal phase and the phase sequence, and generating a baseband signal through a trigonometric function lookup table.
Optionally, the determining the quantization precision of the CPM signal phase according to the target parameter includes:
and quantizing the radian-system phase into intervals according to the sampling rate, the symbol period and the modulation index of the target parameter.
Optionally, the obtaining a difference result of the quantized LFM signal according to the related parameters of the waveform includes:
generating an LFM signal phase sequence identified by a real number according to the CPM phase sequence, and quantizing to obtain a quantized phase sequence;
and carrying out differential operation on the quantized phase sequence to obtain a differential sequence, and obtaining the differential result according to the effective length of the differential sequence.
Optionally, the processing the difference result according to the number of parallel paths of the digital-to-analog converter to obtain processed data includes:
determining the sub-length of the differential sequence according to the number of parallel paths of the digital-to-analog converter;
and carrying out reduction and simplification on the ratio of the parallel path number to the sub-length, and processing to obtain the processing data.
Optionally, the accumulating the generated phase sequence of the LFM signal according to at least one of the processed data comprises:
and outputting the phase sequence of the generated LFM signals in parallel according to the parallel paths.
The embodiment of the second aspect of the present application provides an implementation apparatus for detecting a communication-integrated waveform, including:
the CPM phase generation module is used for determining the quantization precision of the continuous phase modulation CPM signal phase according to the target parameter and generating a CPM phase sequence;
the acquisition module is used for acquiring a difference result of the quantized linear frequency modulation LFM signal according to the related parameters of the waveform based on the CPM phase sequence;
the processing module is used for processing the difference result according to the number of parallel paths of the digital-to-analog converter to obtain processing data;
the LFM phase generation module is used for generating a phase sequence of the LFM signal according to at least one processing data accumulation;
and the integrated waveform baseband generation module is used for adding the CPM signal phase and the phase sequence and generating a baseband signal through a trigonometric function lookup table.
Optionally, the CPM phase generation module is specifically configured to:
and quantizing the radian-system phase into intervals according to the sampling rate, the symbol period and the modulation index of the target parameter.
Optionally, the obtaining module is specifically configured to:
generating an LFM signal phase sequence identified by a real number according to the CPM phase sequence, and quantizing to obtain a quantized phase sequence;
and carrying out differential operation on the quantized phase sequence to obtain a differential sequence, and obtaining the differential result according to the effective length of the differential sequence.
Optionally, the processing module is specifically configured to:
determining the sub-length of the differential sequence according to the number of parallel paths of the digital-to-analog converter;
and carrying out reduction and simplification on the ratio of the parallel path number to the sub-length, and processing to obtain the processing data.
Optionally, the LFM phase generation module is specifically configured to:
and outputting the generated phase sequence of the LFM signal in parallel according to the parallel paths.
An embodiment of a third aspect of the present application provides an electronic device, including: the system comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the implementation method of the detection and communication integrated waveform according to the embodiment.
A fourth aspect of the present application provides a computer-readable storage medium, which stores computer instructions for causing the computer to execute the implementation method of detecting a communication-integrated waveform according to the foregoing embodiment.
Thus, by performing a difference operation on the quantized LFM signal phases, the periodicity of the phase difference sequence is found; the ROM is used for storing the phase difference sequence in one period to avoid using larger quantization bit width in the LFM phase generation process, circuit resources are saved, and time sequence performance is improved. In addition, the quantization precision of the phase of the CPM signal is fully considered when the LFM phase sequence is generated, the phase sequences of the CPM signal and the LFM phase sequence can be directly superposed, and the precision of the CPM signal cannot be lost after the phase sequences are superposed, so that the communication performance is ensured not to be lost, the high-performance detection and communication integrated waveform generation circuit can be realized with lower resource overhead, and the LFM phase sequence has good engineering application value.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
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The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of an implementation method for detecting a communication-integrated waveform according to an embodiment of the present application;
fig. 2 is a diagram illustrating a quantized LFM signal phase difference sequence according to an embodiment of the present application;
FIG. 3 is a diagram illustrating a manner of storing data in a ROM (Read-Only Memory) according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an LFM phase sequence generated by a circuit according to one embodiment of the present application;
FIG. 5 is a schematic diagram of a unified baseband signal generated by a circuit according to one embodiment of the present application;
FIG. 6 is an exemplary diagram of an apparatus for implementing a probing communication integrated waveform according to an embodiment of the present application;
fig. 7 is an exemplary diagram of an electronic device according to an embodiment of the application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The following describes a method, an apparatus, a device, and a medium for implementing a sounding and communication integrated waveform according to an embodiment of the present application with reference to the drawings. Aiming at the problems that the LFM-CPM integrated signal generating circuit in the related technology mentioned in the center of the background art adopts high bit width quantization to process the LFM signal phase and adopts a bit-cutting mode to be added with the CPM signal phase, which causes great circuit resource consumption and loss of quantization precision of the CPM signal phase, the application provides a method for realizing the detection communication integrated waveform, and in the method, the periodicity of a phase difference sequence is discovered by carrying out difference operation on the quantized LFM signal phase; the ROM is used for storing the phase difference sequence in one period to avoid using larger quantization bit width in the LFM phase generation process, circuit resources are saved, and time sequence performance is improved. In addition, the quantization precision of the phase of the CPM signal is fully considered when the LFM phase sequence is generated, the phase sequences of the CPM signal and the LFM phase sequence can be directly superposed, and the precision of the CPM signal cannot be lost after the phase sequences are superposed, so that the communication performance is ensured not to be lost, the high-performance detection and communication integrated waveform generation circuit can be realized with lower resource overhead, and the LFM phase sequence has good engineering application value.
Specifically, fig. 1 is a schematic flowchart of a method for implementing a detection and communication integrated waveform according to an embodiment of the present application.
As shown in fig. 1, the method for implementing the integrated waveform of probe communication includes the following steps:
in step S101, the quantization accuracy of the continuous phase modulated CPM signal phase is determined according to the target parameters, and a CPM phase sequence is generated.
Optionally, in some embodiments, determining the quantization precision of the CPM signal phase according to the target parameter includes: and quantizing the radian-system phase to an interval according to the sampling rate, the symbol period and the modulation index of the target parameter.
Specifically, the embodiment of the present application may be according to a sampling rate fsSymbol period TsAnd a modulation index h for quantizing the phase of radian system to the interval [ -mN [)q,mNq) Corresponding to the interval [ -pi, pi).
Wherein m represents the step length of the change of the quantization number value between two adjacent sampling points, and the lowest quantization bit width N of the CPM phaseqThe expression of (a) is as follows:
Figure BDA0003449669010000041
in step S102, based on the CPM phase sequence, a difference result of the quantized chirp LFM signal is obtained according to the related parameters of the waveform.
Optionally, in some embodiments, obtaining a difference result of the quantized LFM signal according to the related parameters of the waveform includes: generating an LFM signal phase sequence identified by a real number according to the CPM phase sequence, and quantizing to obtain a quantized phase sequence; and carrying out differential operation on the quantized phase sequence to obtain a differential sequence, and obtaining a differential result according to the effective length of the differential sequence.
Specifically, the embodiments of the present application may use a software program to generate an LFM signal phase sequence represented by real numbers, quantize the sequence into integers in a rounding manner, and quantize the quantized phase sequence PLFMThe expression of (a) is as follows:
PLFM=round(mNq·μ·t2);
wherein round () denotes rounding; t represents time from 0 to
Figure BDA0003449669010000051
To be provided with
Figure BDA0003449669010000052
T is the time width of the pulse; μ denotes a chirp coefficient.
It should be noted that, in the process of quantizing the LFM signal phase sequence, the quantization bit width of the CPM phase is directly adopted. This ensures that no loss of accuracy occurs after the LFM signal phase is superimposed on the CPM signal phase.
And then carrying out differential operation on the sequence after integer quantization, wherein the expression is as follows:
ΔPLFM(i)=PLFM(i)-PLFM(i-1),i=0,1,...,T·fs-1;
herein is defined as PLFM(-1)=0。
Determining the effective length L of the differential sequence, and only reserving the first L points in the differential sequence, wherein the expression of L is as follows:
Figure BDA0003449669010000053
where N is the number of communication symbols modulated within a pulse, h is the modulation index, fsFor the sampling rate, B is the integrated signal bandwidth and m is the quantization step size of the CPM signal phase.
In step S103, the difference result is processed according to the number of parallel paths of the digital-to-analog converter, and processed data is obtained.
Optionally, in some embodiments, processing the differential result according to the number of parallel paths of the digital-to-analog converter to obtain processed data includes: determining the sub-length of the differential sequence according to the number of parallel paths of the digital-to-analog converter; and carrying out reduction and simplification on the ratio of the number of the parallel paths to the sub-length, and processing to obtain processing data. Wherein the processing data can be recorded in the ROM.
Specifically, in the embodiment of the present application, the differential sequence sub-length l may be determined according to the parallel path number W of the digital-to-analog converter, where the following formula is:
Figure BDA0003449669010000054
the ratio of the sub-length l of the differential sequence to the parallel path number W is reduced to obtain:
Figure BDA0003449669010000055
further, the difference sequence is processed as follows:
Figure BDA0003449669010000056
wherein, Δ PdealIs the processed differential sequence. Here,. DELTA.P is definedLFM(k<0)=0。
Further, use (1+ log)2q) bits as Δ Pdeal(i) Is determined. If the address index of the ROM is i, the data stored at the ith address is data spliced by the phase difference sequence, and the expression is as follows:
[ΔPdeal((i-1)·W),ΔPdeal((i-1)·W+1),...,ΔPdeal((i-1)·W+W-1)];
the total bit width is W (1+ log)2q), the total number of addresses is l.
In step S104, a phase sequence of the LFM signal is cumulatively generated based on the at least one processing data.
Optionally, in some embodiments, generating the phase sequence of the LFM signal from the at least one processed data accumulation comprises: and outputting the generated phase sequence of the LFM signals in parallel according to the number of parallel paths.
Specifically, the phase sequence of the generated LFM signal is output in a W-path parallel manner, and the formula is as follows:
Figure BDA0003449669010000061
wherein,
Figure BDA0003449669010000062
the phase of the LFM signal generated by the ith path at time t is shown, and ROM (t, i) shows the ith block of data with address t in ROM.
In step S105, the CPM signal phase is added to the phase sequence, and a baseband signal is generated by a trigonometric function lookup table.
Specifically, the embodiment of the present application may add the CPM phase and the LFM phase to obtain the phase of the integrated signal; taking the quantized value of the phase as an address index to look up a cos function table to obtain an I path signal; and taking the quantized value of the phase as an address index to look up a sin function table to obtain the Q-path signal.
Thus, by performing a difference operation on the quantized LFM signal phases, the periodicity of the phase difference sequence is found. The ROM is used for storing the phase difference sequence in one period to avoid using larger quantization bit width in the LFM phase generation process, circuit resources are saved, and time sequence performance is improved. In addition, the present embodiment fully considers the quantization precision of the CPM signal phase when generating the LFM phase sequence, and the phase sequences of the two can be directly superimposed without losing the precision of the CPM signal after the superimposition, thereby ensuring no loss of communication performance. The method can realize the high-performance detection and communication integrated waveform generation circuit with lower resource overhead, and has good engineering application value.
In order to enable those skilled in the art to further understand the implementation method of the integrated waveform for probing and communication in the embodiments of the present application, the following detailed description is provided with reference to specific embodiments.
As shown in fig. 2, fig. 2 is a diagram illustrating a phase difference sequence of the quantized LFM signal. The relevant parameters employed in the example of fig. 2 are as follows: sampling rate fs1280MHz, symbol period Ts0.1 mus, 50 mus, 100MHz, and 1, pulse width B. The quantized LFM signal phase difference sequence has periodicity, and can be usedAs explained below:
Figure BDA0003449669010000071
further, there is the following relationship:
Figure BDA0003449669010000072
thus, the differential phase sequence can be seen as
Figure BDA0003449669010000073
The period exhibits regularity. The results in fig. 2 also verify well the results of the derivation.
Further, as shown in fig. 3, fig. 3 is a schematic diagram of a storage manner of data in the ROM. In this example, the number of parallel paths W of the dac is 8, the length of the processed phase difference sequence is 1600, and the phase difference result of each path can be represented by 1 bit. Thus, each address in the ROM stores 8 bits, for a total of 200 address indices.
Further, as shown in fig. 4, fig. 4 is a circuit generated LFM phase sequence. The phase in the illustration is quantized to the interval of-256, where-256 represents-pi. Further, it can be seen that the change law of the phase conforms to a quadratic function.
Further, as shown in fig. 5, fig. 5 is a schematic diagram of an integrated baseband signal generated by the circuit, and includes an I-path signal and a Q-path signal respectively. The amplitude of the signal in the figure is quantized with 9 bits, i.e. -256 for-1 and 255 for-1
Figure BDA0003449669010000074
Furthermore, it can be seen that the frequency of the I-path signal and the Q-path signal changes faster and faster with time, and the change rule of the LFM carrier is met.
According to the method for realizing the detection and communication integrated waveform, the periodicity of a phase difference sequence is found by carrying out difference operation on the quantized LFM signal phase; the ROM is used for storing the phase difference sequence in one period to avoid using larger quantization bit width in the LFM phase generation process, circuit resources are saved, and time sequence performance is improved. In addition, the quantization precision of the phase of the CPM signal is fully considered when the LFM phase sequence is generated, the phase sequences of the CPM signal and the LFM phase sequence can be directly superposed, and the precision of the CPM signal cannot be lost after the phase sequences are superposed, so that the communication performance is ensured not to be lost, the high-performance detection and communication integrated waveform generation circuit can be realized with lower resource overhead, and the LFM phase sequence has good engineering application value.
Next, a device for implementing a sounding communication integrated waveform according to an embodiment of the present application will be described with reference to the drawings.
Fig. 6 is a block diagram illustrating an apparatus for implementing a sounding and communication integrated waveform according to an embodiment of the present application.
As shown in fig. 6, the apparatus 10 for implementing a probe-communication integrated waveform includes: CPM phase generation module 100, acquisition module 200, processing module 300, LFM phase generation module 400, and integrated waveform baseband generation module 500.
The CPM phase generation module 100 is configured to determine quantization precision of a continuous phase modulation CPM signal phase according to a target parameter, and generate a CPM phase sequence;
the obtaining module 200 is configured to obtain a difference result of the quantized chirp LFM signal according to the related parameters of the waveform based on the CPM phase sequence;
the processing module 300 is configured to process the difference result according to the number of parallel paths of the digital-to-analog converter to obtain processed data;
the LFM phase generation module 400 is configured to generate a phase sequence of the LFM signal according to at least one processing data accumulation;
the integrated waveform baseband generation module 500 is configured to add the CPM signal phase to the phase sequence and generate a baseband signal through a trigonometric function lookup table.
Optionally, the CPM phase generating module 100 is specifically configured to:
and quantizing the radian-system phase to an interval according to the sampling rate, the symbol period and the modulation index of the target parameter.
Optionally, the obtaining module 200 is specifically configured to:
generating an LFM signal phase sequence identified by a real number according to the CPM phase sequence, and quantizing to obtain a quantized phase sequence;
and carrying out differential operation on the quantized phase sequence to obtain a differential sequence, and obtaining a differential result according to the effective length of the differential sequence.
Optionally, the processing module 300 is specifically configured to:
determining the sub-length of the differential sequence according to the number of parallel paths of the digital-to-analog converter;
and carrying out reduction and simplification on the ratio of the number of the parallel paths to the sub-length, and processing to obtain processing data.
Optionally, the LFM phase generation module 400 is specifically configured to:
and outputting the generated phase sequence of the LFM signals in parallel according to the number of parallel paths.
It should be noted that the foregoing explanation of the embodiment of the method for implementing a waveform integrated with detection and communication is also applicable to the apparatus for implementing a waveform integrated with detection and communication of this embodiment, and is not repeated herein.
According to the device for realizing the detection and communication integrated waveform, provided by the embodiment of the application, the periodicity of a phase difference sequence is discovered by carrying out difference operation on the quantized LFM signal phase; the ROM is used for storing the phase difference sequence in one period to avoid using larger quantization bit width in the LFM phase generation process, circuit resources are saved, and time sequence performance is improved. In addition, the quantization precision of the phase of the CPM signal is fully considered when the LFM phase sequence is generated, the phase sequences of the CPM signal and the LFM phase sequence can be directly superposed, and the precision of the CPM signal cannot be lost after the phase sequences are superposed, so that the communication performance is ensured not to be lost, the high-performance detection and communication integrated waveform generation circuit can be realized with lower resource overhead, and the LFM phase sequence has good engineering application value.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device may include:
memory 701, processor 702, and a computer program stored on memory 701 and executable on processor 702.
The processor 702 executes the program to implement the method for detecting a communication-integrated waveform provided in the above-described embodiments.
Further, the electronic device further includes:
a communication interface 703 for communication between the memory 701 and the processor 702.
A memory 701 for storing computer programs operable on the processor 702.
The memory 701 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
If the memory 701, the processor 702 and the communication interface 703 are implemented independently, the communication interface 703, the memory 701 and the processor 702 may be connected to each other through a bus and perform communication with each other. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
Alternatively, in specific implementation, if the memory 701, the processor 702, and the communication interface 703 are integrated on one chip, the memory 701, the processor 702, and the communication interface 703 may complete mutual communication through an internal interface.
The processor 702 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present Application.
The present embodiment also provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the method for implementing the integrated waveform for detecting communication as above.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of implementing the embodiments of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or N wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (12)

1. A method for realizing a detection and communication integrated waveform is characterized by comprising the following steps:
determining the quantization precision of the continuous phase modulation CPM signal phase according to the target parameter, and generating a CPM phase sequence;
based on the CPM phase sequence, obtaining a difference result of the quantized linear frequency modulation LFM signal according to the relevant parameters of the waveform;
processing the difference result according to the parallel path number of the digital-to-analog converter to obtain processed data;
accumulating the at least one processed data to generate a phase sequence of the LFM signal;
and adding the CPM signal phase and the phase sequence, and generating a baseband signal through a trigonometric function lookup table.
2. The method of claim 1, wherein determining the quantization accuracy of the CPM signal phase based on the target parameter comprises:
and quantizing the radian-system phase into intervals according to the sampling rate, the symbol period and the modulation index of the target parameter.
3. The method of claim 1, wherein obtaining the difference result of the quantized LFM signal according to the related parameters of the waveform comprises:
generating an LFM signal phase sequence identified by a real number according to the CPM phase sequence, and quantizing to obtain a quantized phase sequence;
and carrying out differential operation on the quantized phase sequence to obtain a differential sequence, and obtaining the differential result according to the effective length of the differential sequence.
4. The method of claim 3, wherein the processing the difference result according to the number of parallel paths of the digital-to-analog converter to obtain the processed data comprises:
determining the sub-length of the differential sequence according to the number of parallel paths of the digital-to-analog converter;
and carrying out reduction and simplification on the ratio of the parallel path number to the sub-length, and processing to obtain the processing data.
5. The method of claim 4, wherein accumulating the generated phase sequence of the LFM signal from the at least one processed data comprises:
and outputting the generated phase sequence of the LFM signal in parallel according to the parallel paths.
6. A device for realizing detection and communication integrated waveforms is characterized by comprising:
the CPM phase generation module is used for determining the quantization precision of the continuous phase modulation CPM signal phase according to the target parameter and generating a CPM phase sequence;
the acquisition module is used for acquiring a difference result of the quantized linear frequency modulation LFM signal according to the related parameters of the waveform based on the CPM phase sequence;
the processing module is used for processing the difference result according to the number of parallel paths of the digital-to-analog converter to obtain processing data;
the LFM phase generation module is used for generating a phase sequence of the LFM signal according to at least one processing data accumulation;
and the integrated waveform baseband generation module is used for adding the CPM signal phase and the phase sequence and generating a baseband signal through a trigonometric function lookup table.
7. The apparatus of claim 6, wherein the CPM phase generation module is specifically configured to:
and quantizing the radian-system phase into intervals according to the sampling rate, the symbol period and the modulation index of the target parameter.
8. The method of claim 6, wherein the obtaining module is specifically configured to:
generating an LFM signal phase sequence identified by a real number according to the CPM phase sequence, and quantizing to obtain a quantized phase sequence;
and carrying out differential operation on the quantized phase sequence to obtain a differential sequence, and obtaining the differential result according to the effective length of the differential sequence.
9. The apparatus of claim 8, wherein the processing module is specifically configured to:
determining the sub-length of the differential sequence according to the number of parallel paths of the digital-to-analog converter;
and carrying out reduction and simplification on the ratio of the parallel path number to the sub-length, and processing to obtain the processing data.
10. The apparatus of claim 9, wherein the LFM phase generation module is specifically configured to:
and outputting the generated phase sequence of the LFM signal in parallel by adopting the parallel path number.
11. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the method of implementing a probe-communication integrated waveform according to any one of claims 1 to 5.
12. A computer-readable storage medium, on which a computer program is stored, the program being executed by a processor for implementing the method for detecting a communication-integrated waveform according to any one of claims 1 to 5.
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