WO2018170667A1

WO2018170667A1 - Unified standard orthogonal wavelet multiplexing radio system

Info

Publication number: WO2018170667A1
Application number: PCT/CN2017/077268
Authority: WO
Inventors: 焦彦华
Original assignee: 焦彦华
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2018-09-27
Also published as: CN107113081B; CN107113081A

Abstract

The present invention pertains to the technical field of radio communications and radar, and discloses a unified standard orthogonal wavelet multiplexing radio system, to realize high-speed and reliable multi-user radio communication, high-precision and real-time multi-user passive radar positioning, and multi-target active radar detection functions, by generating and sending, as well as receiving and processing, a unified standard orthogonal wavelet multiplexing baseband signal on the same hardware and software platform. The system comprises a unified standard orthogonal wavelet multiplexing baseband signal generating component, a multi-user communication signal receiving parallel-processing component, a multi-user communication signal relaying parallel-processing component, a multi-user passive radar positioning parallel-processing component, and a multi-target active radar detection comprehensive processing component. The present invention realizes the integration of radio communication, radio passive positioning, and active detection functions and is applicable not only to civil fields such as telematics, Internet of Things and sensors, and global satellite communication positioning networks, but also to military fields such as C4ISR.

Description

A unified standard orthogonal wave sub-multiplexing radio system

Technical field

The present invention relates to the field of radio communication and radar technologies, and more particularly to a unified standard orthogonal wave sub-multiplexing radio system.

Background technique

Since the discovery of electromagnetic waves, people have not only disputed its nature, but also applied different directions in its applications, such as radio communications and radar. Radiocommunication technology and radar technology have evolved from the very beginning along their respective technical routes and have never really combined into one.

In some environments where the requirements for compatibility with the electromagnetic environment are relatively strict and the space utilization requirements are high, such as the bridge of an aircraft carrier and the vehicles in the Internet of Vehicles, the demand for communication radar integration has become increasingly urgent. First, the requirements for communication performance, such as data rate, data volume, anti-jamming, etc., force the communication band to approach the traditional radar band, which will inevitably lead to increased frequency in the high-frequency band and may cause interference between communication and radar. Again, communication radar integration can save valuable space for aircraft carriers and vehicles and reduce the price of discrete radar and communication equipment. Finally, the rapid development of digital signal processing technology and devices makes communication radar integration possible. In summary, if radio communication and radar location detection can share a unified signal, then radio communication and radar can share a platform, then those problems that need to be solved, such as electromagnetic compatibility, space is small, and expensive, can be completely solved. .

The existing communication radar integrated signal scheme can be roughly divided into two categories: a single carrier scheme and a multi-carrier scheme. Publication No. CN101447837A In the single-carrier scheme, multi-user communication and multi-target radar detection mainly use code division multiple access or spread spectrum techniques, such as direct sequence spread spectrum technology, frequency hopping spread spectrum technology and linear frequency modulation spread spectrum technology. The main disadvantages of the single-carrier scheme are the disadvantages of low spectrum utilization, low frequency dispersion resistance, large computational complexity, and complex systems. The multi-carrier scheme is mainly developed on the basis of orthogonal frequency division multiplexing communication. It adopts filter bank technology or modulation symbol domain-based processing technology in communication radar data processing; the main disadvantages of orthogonal frequency division multiplexing scheme The system is complex, the peak average power ratio is high, and the transmission efficiency is not high.

Summary of the invention

In view of the above deficiencies of the prior art, an object of the present invention is to provide a unified standard orthogonal wave sub-multiplexing radio system, which not only performs unified transmission and reception processing on the same software and hardware platform. Quasi-orthogonal wave sub-multiplexing of baseband signals, simultaneous high-speed, reliable multi-user radio communication, high-precision, real-time multi-user passive radar positioning and multi-target active radar detection, and the system has spectrum utilization and transmission efficiency High, low computation, small size, simple structure and so on.

The invention starts from the essence of the electromagnetic wave, extends the wave-particle duality of the electromagnetic wave from the microscopic to the macroscopic, and extends the probability wave packet in the quantum mechanics to the macroscopic classical wave, and generates the standard orthogonal wave wavelet sub-multiplexing technique. At the same time, it satisfies the unified signal of multi-user, high-speed and reliable data communication and multi-target, high-precision radar detection function; the invention adopts a demand-driven design method and proposes a configurable unified standard with high reliability and high maintenance. Orthogonal wave sub-multiplexing radio system; the invention not only surpasses the existing orthogonal frequency division multiplexing communication radar integration scheme in data communication, but also has ultra-high precision and ultra-long-range radar detection on radar detection ability.

In order to achieve the above object, the present invention is implemented by the following technical solutions:

A unified standard orthogonal wave sub-multiplexing radio system for synchronizing standard orthogonal wave sub-multiplexing baseband signals by generating transmission and reception processing on the same hardware and software platform, and realizing high-speed and reliable multi-user radio Communication, high-precision, real-time multi-user passive radar positioning and multi-target active radar detection; unified standard orthogonal wave sub-multiplexed radio system mainly consists of antenna array and RF front-end and unified standard orthogonal wave sub-multiplexing transceiver Machine composition; unified standard orthogonal wave sub-multiplexing transceiver includes unified standard orthogonal wave sub-multiplexing baseband signal generating component, multi-user communication receiving signal parallel processing component, multi-user communication relay signal parallel processing component, and more User passive radar positioning parallel processing component and multi-target active radar detection integrated processing component.

Preferably, in any one of the above solutions, the transceiver sub-unit is a unified standard orthogonal wave sub-multiplexing transceiver, and the unified standard orthogonal wave sub-multiplexing transceiver adopts a CPCI bus structure, including unified The standard orthogonal wave sub-multiplexing baseband signal generating component, the multi-user communication receiving signal parallel processing component, the multi-user communication relay signal parallel processing component, the multi-user passive radar positioning parallel processing component and the multi-target active radar detecting integrated processing component.

Preferably, in any of the above aspects, the unified standard orthogonal wave sub-multiplexing baseband signal generating component is configured to generate a unified standard for multi-user radio communication, multi-user passive radar positioning, and multi-target active radar detection functions. The cross-wave sub-multiplexing baseband signal includes the following modules:

Standard orthogonal wave sub-generation module for generating standard orthogonal, energy-concentrated, time-frequency locality Standard orthogonal wave;

The unified signal gene generating module is configured to perform optimal allocation of limited standard orthogonal wave sub-resources in time and space between multiple users to avoid interference between multiple users and generate a unified signal gene;

The data error correction coding module is configured to complete source coding and channel coding of system state data and communication original data, improve communication efficiency and reliability, and generate direct communication parallel symbol data;

a signal gene coding module, configured to complete signal gene coding of direct communication parallel symbol data and relay communication parallel symbol data, to generate unified genetic coded data;

The standard orthogonal wave submodulation module completes the standard orthogonal wave submodulation of the unified gene encoded data, and generates a unified standard orthogonal wave sub-multiplexed baseband signal.

Preferably, in any of the above aspects, the multi-user communication receiving signal parallel processing component is configured to perform parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receive and recover the transmission by the multiple source users. Raw data, complete high-speed, reliable multi-user radio communication reception, including the following modules:

a parallel receiving synchronization module, configured to complete parallel receiving synchronization of the received baseband signal and the multi-user synchronization signal, and extracting a multi-user communication transmitting data baseband signal;

A standard orthogonal wave sub-demodulation module is configured to perform standard orthogonal wave sub-demodulation on a multi-user communication data baseband signal, and extract data genetic coded data sent by multiple users;

a data gene decoding module, configured to complete data gene decoding of data gene encoded data sent by multiple users, and extract received parallel symbol data sent by multiple users;

The data error correction decoding module is configured to complete channel error correction decoding and source decoding of parallel symbol data sent by multiple users, recover system state data and communication original data sent by multiple users, and complete high-speed and reliable multi-user radio communication reception. .

Preferably, in any of the above aspects, the multi-user communication relay signal parallel processing component is configured to perform parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receive and relay multiple pre-transmissions. The relay data sent by the level user completes the high-speed and reliable multi-user radio communication relay, including the following modules:

a parallel relay synchronization module, configured to complete parallel relay synchronization of the received baseband signal and the multi-user synchronization signal, and extract a multi-user communication relay data baseband signal;

The standard orthogonal wave sub-demodulation module is configured to complete standard orthogonal wave sub-demodulation of the baseband signal of the multi-user communication relay data, and extract data genetic code data transmitted by the multi-user;

The data gene decoding module is configured to complete data gene decoding of data gene encoded data sent by multiple users, extract relay parallel symbol data sent by multiple users, and complete high-speed and reliable multi-user radio communication relay.

Preferably, in any one of the above aspects, the multi-user passive radar positioning parallel processing component is configured to perform parallel processing on at least four baseband signals received and preprocessed by the antenna array and the radio frequency front end, and simultaneously obtain multiple users. Relative position information, complete high-precision, real-time multi-user passive radar positioning, including the following modules:

a multi-user signal identification module, configured to perform identification of a multi-user transmit baseband signal in the received baseband signal, and extract a unified signal gene of the identified user;

a multi-user transmit signal regeneration module for performing standard orthogonal wave sub-demodulation, data gene decoding, data gene re-encoding, and standard orthogonal wave sub-modulation of the identified user data baseband signal, and then generating a data baseband signal transmitted by the identified user;

a multi-user pseudo-range measurement module, configured to perform a digital correlation operation on the received at least four baseband signals and the identified multi-user regenerated baseband signal, and calculate a pseudorange of the identified user to at least four antennas;

The multi-user differential positioning module is used to complete the differential operation of the pseudo-distance of the identified user to at least 4 antennas, calculate the coordinates of the multi-user in the antenna coordinate system, and complete high-precision, real-time multi-user passive radar positioning.

Preferably, in any one of the above aspects, the multi-target active radar detection integrated processing component is configured to comprehensively process at least four baseband signals received and preprocessed by the antenna array and the radio frequency front end, and simultaneously obtain relative orientations of multiple targets. Location information, complete high-precision, real-time multi-target active radar detection, including the following modules:

The multi-target identification module mainly performs digital correlation calculation on the received at least four baseband signals and the locally transmitted baseband signals, and calculates an absolute distance of at least four antennas to multiple targets respectively;

The multi-objective feature extraction module mainly performs the integrated operation of the absolute distances of at least four antennas to multiple targets, calculates the coordinates of the multi-target in the antenna coordinate system, and completes high-precision, real-time multi-target active radar detection;

Preferably, in any one of the above aspects, the standard orthogonal wave sub-generation module generates a set of standard orthogonal, energy-concentrated, time-frequency localized standard orthogonal wave elements; the set of standard orthogonal wave elements is a large number An ensemble of quantum formation with the same coherent state |w _j >. The quantum coherent state |w _j > must satisfy the following constraints:

[Correct according to Rule 26 10.04.2017]
Among them, the generation of the quantum eigenstate |o _j } can be obtained by solving the non-time-dependent Schrödinger equation. The constraints are as follows:

among them,

For the Planck constant,

For the Laplacian, m is the mass of the quantum, U(r) is the potential energy of the quantum, and E is a constant (energy level) that does not depend on t nor on r.

For the Hamiltonian, ψ _E (r) is the spatial component of the quantum state.

Preferably, in any one of the above aspects, the unified signal gene generating module is configured to perform optimal allocation of time and space in a multi-user for a limited standard orthogonal wave sub-resource to generate a unified signal gene; The unified signal gene is composed of a synchronous signal gene and multiple data genes; the synchronization signal gene is mainly used for wave synchronization of signals, and the synchronization precision reaches one sampling interval; the data signal gene is mainly used for signal data transmission, and the standard orthogonal wave is used. The principle of allocation is that the waves overlapping each other in the same time and space cannot exceed the error correction capability of the error correction code; the signal genes allocated to the user are dynamically generated or configured according to the system state and environmental conditions.

Preferably, in any one of the above aspects, the signal gene encoding module performs data genetic coding on the direct communication parallel symbol data and the relay communication parallel symbol data to generate unified genetic coded data, and the constraint conditions are as follows:

among them

For the synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, and data ^trans _j is the direct communication parallel symbol data.

For direct communication of data signal genes, data ^delay _j is relay communication parallel symbol data,

To relay communication data signal genes.

Preferably, in any one of the above aspects, the standard orthogonal wave submodulation module performs standard orthogonal wave submodulation on the unified gene encoded data to generate a unified standard orthogonal wave sub-multiplexed baseband signal, and the constraint conditions are as follows:

Where sync _j,m is the synchronous gene encoded data, data _j,k is the direct communication or relay communication data genetically encoded data, w _j (n) is the standard orthogonal wave and N _w is the standard orthogonal wave sub-length;

Preferably, in any one of the above aspects, the parallel receiving synchronization module synchronizes the parallel reception of the received baseband signal and the multi-user synchronization signal to extract a multi-user communication transmission data baseband signal; and the parallel reception synchronization is first obtained. The user's unified signal gene generates a synchronization signal according to the synchronization signal gene, and then digitally correlates the received baseband signal with the locally generated user synchronization signal, and finally performs synchronous extraction of the user communication transmission data baseband signal according to the digital correlation result, and the constraint condition as follows:

among them,

For the synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w _j (n) is the standard orthogonal wave, N _w is the standard orthogonal wave length, s _r (n) For receiving baseband signals;

In any of the above aspects, it is preferred that the standard orthogonal wave sub-demodulation module transmits the extracted user communication. The data baseband signal is transmitted with the standard orthogonal wave to perform inner product operation, and the direct communication data gene coded data sent by the user is extracted, and the constraint conditions are as follows:

among them,

For synchronizing the received user communication data baseband signal, w _j (n) is a standard orthogonal wave, and N _w is a standard orthogonal wave sub-length;

Preferably, in any one of the above aspects, the data gene decoding module performs a row inner product operation on the data gene encoded data sent by the multi-user and the corresponding data gene, and extracts direct communication parallel symbol data sent by the multi-user, and the constraint condition as follows:

Where data _j,k is the data encoded data of the standard orthogonal wave sub-demodulation and

Generating a data signal gene for the corresponding;

Preferably, in any one of the above aspects, the parallel relay synchronization module synchronizes the received baseband signal and the multi-relay pre-stage user synchronization signal to extract a multi-relay pre-stage user relay communication data baseband. Signal; parallel relay synchronization first obtains the unified signal gene of the pre-relay user and generates a synchronization signal according to the synchronization signal gene, and then digitally correlates the received baseband signal with the locally generated pre-stage user synchronization signal, and finally according to The digital correlation result completes the synchronous extraction of the relay baseband communication data baseband signal, and the constraints are as follows:

among them,

In order to relay the pre-level user synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w _j (n) is the standard orthogonal wave, and N _w is the standard orthogonal wave length. s _r (n) is the received baseband signal;

In any of the above aspects, it is preferred that the standard orthogonal wave sub-demodulation module The user communication data baseband signal and the standard orthogonal wave are subjected to inner product operation, and the data genetic code data transmitted by the pre-relay user is extracted, and the constraint conditions are as follows:

among them,

For relaying the received pre-relay user communication data baseband signal, w _j (n) is a standard orthogonal wave, and N _w is a standard orthogonal wave sub-length;

Preferably, in any one of the above aspects, the data gene decoding module performs a row inner product operation on the data gene coded data sent by the pre-relay user and the corresponding relay data gene, and extracts the data sent by the pre-relay user. Relay parallel symbol data with the following constraints:

For the corresponding relay data signal gene;

Preferably, in any one of the above aspects, the multi-user signal identification module first performs a cyclic digital correlation operation on the received baseband signal and a multi-user synchronization signal in a certain range, and then identifies the user according to the digital correlation result, and extracts The unified signal gene of the user has been identified, and the constraints are as follows:

among them,

For the mth user's synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w _j (n) is the standard orthogonal wave, N _w is the standard orthogonal wave length, s _r (n) is the received baseband signal and R ₀ is the decision threshold.

Preferably, in any of the above aspects, the multi-user transmit signal regeneration module first performs inner product operation on the synchronized recognized user data baseband signal and the standard orthogonal wave to extract the number of the identified user. According to the genetically encoded data, the data gene encoding data sent by the extracted identified user is used for data gene decoding, and finally the corresponding genetic coding and standard orthogonal wave submodulation of the decoded parallel data symbol data are performed, and the identified user is reproduced. The data signal sent is as follows:

among them,

For the synchronized mth user data baseband signal after synchronization,

For the data signal gene of the identified mth user, w _j (n) is a standard orthogonal wave, and N _w is a standard orthogonal wave sub-length.

Preferably, in any one of the above aspects, the multi-user pseudo-range measurement module performs digital correlation on the locally-recovered identified user data signals for at least four antennas and the baseband signals received by the radio frequency front end respectively, and extracts the identified users. Pseudo-delay to at least 4 antennas and pseudo-range calculation, respectively, the constraints are as follows:

Where s _r ^j (n) is the baseband signal received by the j-th antenna and the RF front end, and s _t (n) is the reproduced data baseband signal of the identified user, R ₀ is the decision threshold, f _s is the sampling frequency and c vacuum The speed of light in the middle.

Preferably, in the above solution, the multi-user differential positioning module uses two hyperbolic intersection methods to perform differential positioning of the identified target on at least at least 4 antennas to the pseudo range of the identified target, and calculates The coordinates of the user in the antenna coordinate system have been identified, and the constraints are as follows:

Where a ₁ , a ₂ , a ₃ and a ₄ are the coordinates of the receiving antenna,

with

The pseudo moment for receiving the antenna to the target.

Preferably, in the foregoing solution, the multi-target identification module performs digital correlation on at least at least four antennas and a baseband signal received by the radio frequency front end on the locally transmitted data signals, and extracts at least at least four antennas to multiple The absolute delay of the target and the distance calculation, the constraints are as follows:

Where s _r ^j (n) is the baseband signal received by the jth antenna, s _t (n) is the locally transmitted data baseband signal, R ₀ is the decision threshold, and f _s is the sampling frequency and the speed of light in the c vacuum.

In any of the above aspects, the multi-target feature extraction module performs a comprehensive solution on a distance matrix of at least four antennas to multiple targets by using a plurality of concentric circle intersection methods to calculate a multi-target The coordinates in the antenna coordinate system are as follows:

Where a _j is the coordinates of the jth antenna,

The absolute distance from the j-th antenna to the multi-target.

The present invention has the following advantages over the prior art:

First, the present invention adopts the standard orthogonal wave sub-technology, and the standard orthogonal wave itself not only has perfect symmetry at the same time, standard orthogonality, good time-frequency domain locality and energy concentration, but also can be generated according to different situations. Corresponding standard orthogonal wave sub-band; using standard orthogonal wave sub-multiplexing technology, the limited standard orthogonal wave sub-resources are optimally allocated in the space-time domain among multiple users, so that the unified standard orthogonal wave sub-multiplexing radio system not only High-speed, reliable multi-user radio communication, high-precision, real-time multi-user passive radar positioning and multi-target active radar detection, and configurable unified standard orthogonal wave sub-multiplexing radio system can be used according to different scenarios. Perform adaptive configuration;

Second, since the vector inner product and the digital correlation technique are used in the received signal processing of the system, the algorithm is simpler, the calculation amount is smaller, and the energy consumption is lower.

DRAWINGS

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the following embodiments will be BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in the claims Other drawings can be obtained from these figures.

1 is a block diagram showing a preferred embodiment of a unified standard orthogonal wave sub-multiplexing transceiver in accordance with the present invention;

2 is a signal flow diagram of an embodiment of a unified standard orthogonal wave sub-multiplexing transceiver in accordance with the present invention;

3 is a diagram showing the genetic composition of an embodiment of a unified standard orthogonal wave sub-multiplexed signal according to the present invention;

4 is a schematic diagram of an embodiment of a standard orthogonal wave submodulation and demodulation in accordance with the present invention;

Figure 5 is a diagram showing the relationship between ranging accuracy and sampling frequency of a unified standard orthogonal wave sub-multiplexing radio system according to the present invention;

6 is a communication simulation result of a unified standard orthogonal wave sub-multiplexing radio system according to the present invention;

Figure 7 is a simulation result of multi-target radar detection of an embodiment of a unified standard orthogonal wave sub-multiplexed radio system in accordance with the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The figure shows an embodiment of a unified standard orthogonal wave sub-multiplexed radio system according to the present invention for synthesizing a standard quadrature wave sub-multiplexed baseband signal by generating transmission and reception processing on the same hardware and software platform. Uniform standard orthogonal wave sub-multiplexing baseband signal by generating transmission and reception processing, high-speed and reliable multi-user radio communication, high-precision, real-time multi-user passive radar positioning and multi-target active radar detection function, unified standard The orthogonal wave sub-multiplexing transceiver adopts a CompactPCI bus structure with hot pluggability, high openness and high reliability, and mainly includes a unified standard orthogonal wave sub-multiplexing baseband signal generating component and a multi-user communication receiving signal. Parallel processing component, multi-user communication Following the signal parallel processing component, the multi-user passive radar positioning parallel processing component and the multi-target active radar detection integrated processing component, as shown in FIG. 1, the unified standard orthogonal wave sub-multiplexing radio system embodiment includes an antenna array and a radio frequency The front-end system and the transceiver system, the transceiver is a unified standard orthogonal wave sub-multiplexing transceiver; the unified standard orthogonal wave sub-multiplexing transceiver adopts a CPCI bus structure, including a unified standard The cross-wave sub-multiplexing baseband signal generating component, the multi-user communication receiving signal parallel processing component, the multi-user communication relay signal parallel processing component, the multi-user passive radar positioning parallel processing component and the multi-target active radar detecting integrated processing component.

A unified standard orthogonal wave sub-multiplexing baseband signal generating component for generating a unified standard orthogonal wave sub-multiplexing baseband signal satisfying multi-user radio communication, multi-user passive radar positioning, and multi-target active radar detection function, including the following Module:

a standard orthogonal wave sub-generation module is configured to generate a standard orthogonal, energy symmetric set, and a standard time-frequency localized good orthogonal wave;

The signal processing of the unified standard orthogonal wave sub-multiplexing transceiver adopts modular flow design, which mainly includes unified standard orthogonal wave sub-multiplexing baseband signal generating unit, multi-user communication receiving signal parallel processing unit, and multi-user communication. Following the signal parallel processing unit, the multi-user passive radar positioning parallel processing unit and the multi-target active radar detection integrated processing unit, as shown in FIG. 2, the system signal processing flow includes the following:

The unified standard orthogonal wave sub-multiplexing baseband signal generating unit generates a unified standard orthogonal wave wave that satisfies both high-speed and reliable multi-user radio communication and high-precision, real-time multi-user passive radar positioning and multi-target active radar detection functions. Branch-multiplexed baseband signal, by standard orthogonal wave sub-generation module, unified a signal gene generating module, a data error correction coding module, a signal gene coding module and a standard orthogonal wave submodulation module;

A standard orthogonal wave sub-generation module generates a set of standard orthogonal, energy-concentrated, time-frequency localized standard orthogonal wave carriers; the set of standard orthogonal wave elements is a large number of quantum formations having the same coherent state |w _j > Ensemble. The quantum coherent state |w _j > must satisfy the following constraints:

Among them, the generation of the quantum eigenstate |o _j > can be obtained by solving the non-time-dependent Schrödinger equation. The constraints are as follows:

among them,

For the Planck constant,

For the Hamiltonian, ψ _E (r) is the spatial component of the quantum state.

The unified signal gene generation module performs optimal allocation of time and space in a multi-user for a limited standard orthogonal wave sub-resource to generate a unified signal gene; a unified signal gene and a plurality of data genes are allocated to the unified signal gene allocated to the user. Composition, as shown in Figure 3; synchronization signal genes are mainly used for signal wave synchronization, synchronization accuracy reaches a sampling interval; data signal genes are mainly used for signal data transmission, the principle of standard orthogonal wave assignment is the same time and space between different users The overlapping waves cannot exceed the error correction capability of the error correction code; the signal genes allocated to the user are dynamically generated or configured according to system status (such as number of users, data rate and capacity, etc.) and environmental conditions (such as multipath effects). .

The signal gene coding module performs signal gene coding on transmitting parallel symbol data and relay parallel symbol data to generate unified genetic coded data, and the constraint conditions are as follows:

among them

For the synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, and data ^trans _j is the transmitted parallel symbol data.

To transmit a data signal gene, data ^delay _j is relayed parallel symbol data.

To relay data signal genes.

The standard orthogonal wave submodulation module performs standard orthogonal wave submodulation on the unified gene encoded data to generate a unified standard orthogonal wave sub-multiplexed baseband signal, as shown in FIG. 4, and the constraint conditions are as follows:

Where sync _j,m is the sync gene encoding data, data _j,k is the transmitted or relay gene encoded data, w _j (n) is the standard orthogonal wave and N _w is the standard orthogonal wave sub-length.

The multi-user communication receiving signal parallel processing unit performs parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receives and recovers original data sent by multiple source users, and completes high-speed and reliable multi-user radio communication receiving, by The parallel receiving synchronization module, the standard orthogonal wave sub-demodulation module, the data gene decoding module and the data error correction decoding module are composed.

The parallel receiving synchronization module synchronizes the parallel reception of the received baseband signal and the multi-user synchronization signal to extract the multi-user communication data baseband signal; the parallel reception synchronization first obtains the unified signal gene of the user and generates a synchronization signal according to the synchronization signal gene, and then The received baseband signal is digitally correlated with the locally generated user synchronization signal, and finally the synchronous extraction of the user communication data baseband signal is completed according to the digital correlation result, and the constraints are as follows:

among them,

For the synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w _j (n) is the standard orthogonal wave, N _w is the standard orthogonal wave length, s _r (n) Is the baseband signal received.

The standard orthogonal wave sub-demodulation module performs an inner product operation on the extracted user communication data baseband signal and the standard orthogonal wave carrier, and extracts the data genetic coded data sent by the user, as shown in FIG. 4, and the constraint conditions are as follows:

among them,

For synchronously receiving user communication data baseband signals, w _j (n) is a standard orthogonal wave, and N _w is a standard orthogonal wave sub-length.

The data gene decoding module performs line inner product operation on the data gene encoded data sent by the multi-user and the corresponding data gene, and extracts the received parallel symbol data sent by the multi-user, and the constraint conditions are as follows:

For the corresponding emission data signal gene.

The multi-user communication relay signal parallel processing component performs parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receives and relays the relay data sent by the plurality of pre-level users to complete the high-speed and reliable multi-user. The radio communication relay is composed of a parallel relay synchronization module, a standard orthogonal wave sub-demodulation module and a data gene decoding module.

The parallel relay synchronization module synchronously synchronizes the received baseband signal and the multi-relay pre-stage user synchronization signal to extract the multi-relay pre-level user communication data baseband signal; the parallel relay synchronization first obtains the relay pre-level user The signal gene is unified and a synchronization signal is generated according to the synchronization signal gene, and then the received baseband signal is digitally correlated with the locally generated relay pre-stage user synchronization signal, and finally based on the digital correlation result Synchronous extraction of the baseband signal of the pre-relay user communication data is completed, and the constraints are as follows:

among them,

In order to relay the pre-level user synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w _j (n) is the standard orthogonal wave, and N _w is the standard orthogonal wave length. s _r (n) is the received baseband signal.

The standard orthogonal wave sub-demodulation module performs an inner product operation on the extracted pre-relay user communication data baseband signal and the standard orthogonal wave element, and extracts the data genetic coded data sent by the pre-relay user, and the constraint conditions are as follows:

among them,

For relaying the received pre-relay user communication data baseband signal, w _j (n) is a standard orthogonal wave, and N _w is a standard orthogonal wave sub-length.

The data gene decoding module performs the intra-product inner product operation on the data gene encoding data sent by the pre-relay user and the corresponding relay data gene, and extracts the relay parallel symbol data sent by the pre-relay user, and the constraint conditions are as follows:

For the corresponding relay data signal genes.

The multi-user passive radar positioning parallel processing unit performs parallel processing on at least 4 baseband signals received and preprocessed by the antenna array and the RF front end, and simultaneously obtains relative position information of multiple users, and completes high-precision, real-time multi-user passive radar positioning. The utility model is composed of a multi-user signal recognition module, a multi-user transmission signal regeneration module, a multi-user pseudo-range measurement module and a multi-user differential positioning module.

The multi-user signal identification module first performs a cyclic digital correlation operation on the received baseband signal and a multi-user synchronization signal in a certain range, and then identifies the user according to the digital correlation result, and extracts the unified signal gene of the identified user, and the constraint conditions are as follows:

among them,

The multi-user transmitting signal regeneration module first performs inner product operation on the synchronized recognized user data baseband signal and the standard orthogonal wave, extracts the data genetic code data transmitted by the identified user, and then sends the data gene to the extracted identified user. The encoded data is used for data gene decoding, and finally the corresponding gene coding and standard orthogonal wave sub-modulation are performed on the parallel decoded data symbol data of the gene, and the data signal transmitted by the identified user is reproduced, and the constraint conditions are as follows:

among them,

For the synchronized mth user data baseband signal after synchronization,

The multi-user pseudo-range measurement module performs digital correlation between the at least four antennas and the baseband signals received by the radio frequency front end respectively on the locally reproduced recognized user data signals, and extracts the pseudo delays of the identified users to at least at least four antennas respectively. Perform pseudorange calculations with the following constraints:

The multi-user differential positioning module adopts two hyperbolic intersection methods to perform differential positioning of the identified target on the pseudorange of at least 4 antennas to the identified target, and calculates the coordinates of the identified user in the antenna coordinate system, and constrains The conditions are as follows:

with

To receive the antenna to the target's pseudorange.

The multi-target active radar detection integrated processing unit comprehensively processes at least four baseband signals received and preprocessed by the antenna array and the RF front end, and simultaneously obtains relative position information of multiple targets, and completes high-precision, real-time multi-target active radar detection. It consists of a multi-target recognition module and a multi-target feature extraction module.

Multi-target recognition module, how many? ? ? The baseband signals received by the road antenna and the RF front end are digitally correlated with the locally transmitted data signals, and the absolute delay of at least 4 antennas to multiple targets is extracted and the distance is calculated. The constraints are as follows:

The multi-objective feature extraction module uses a plurality of sets of concentric circle intersection methods to comprehensively solve the distance matrix of at least four antennas to multiple targets, and calculates coordinates of the multi-object in the antenna coordinate system, and the constraint conditions are as follows:

Where a _j is the coordinates of the jth antenna,

The absolute distance from the j-th antenna to the multi-target.

The effects of the present invention are further illustrated by the following simulation experiments:

1. Simulation conditions:

In this simulation experiment, the orthogonal wave number is 32, the length of the wave is 32; the signal coding is 16QAM; the synchronization sub-signal length is 64, the data sub-signal is 1024 per symbol length; the baseband sampling frequency is 1 GHz; the channel is Gaussian channel.

2. Simulation content:

Vehicle A communicates with vehicle B, which is 78.1 meters away, while measuring distances of 78.2 meters, 3 meters and 3.2 meters in the same direction.

3. Analysis of simulation results:

It can be seen from FIG. 5 that the ranging accuracy of the communication radar designed by the method of the present invention is inversely proportional to the sampling frequency of the system, and the higher the sampling rate of the system, the higher the ranging accuracy, for example, when the sampling rate is 1 GHz, the ranging is performed at this time. The accuracy is 0.15 meters.

It can be seen from Fig. 6 that when the EbN0 of the signal is greater than 12, the system has no error code and can realize reliable communication.

It can be seen from Fig. 7 that high-precision radar detection for multiple targets can be realized while completing multi-user, high-speed and reliable communication.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

A unified standard orthogonal wave sub-multiplexing radio system, comprising an antenna array, a radio frequency front end system and a transceiver system, wherein the transceiver is a unified standard orthogonal wave sub-multiplexing transceiver; The unified standard orthogonal wave sub-multiplexing transceiver adopts a CPCI bus structure, including a unified standard orthogonal wave sub-multiplexing baseband signal generating component, a multi-user communication receiving signal parallel processing component, and a multi-user communication relay signal parallel processing. Component, multi-user passive radar positioning parallel processing component and multi-target active radar detection integrated processing component.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 1, wherein said unified standard orthogonal wave sub-multiplexing baseband signal generating component is configured to generate multi-user radio communication, multi-user Unified standard orthogonal wave sub-multiplexing baseband signals for passive radar positioning and multi-target active radar detection, including the following modules:

a standard orthogonal wave sub-generation module is configured to generate a standard orthogonal, energy symmetric set, and a standard time-frequency localized good orthogonal wave;

The unified signal gene generating module is configured to perform optimal allocation of limited standard orthogonal wave sub-resources in time and space between multiple users to avoid interference between multiple users and generate a unified signal gene;

The data error correction coding module is configured to complete source coding and channel coding of system state data and communication original data, improve communication efficiency and reliability, and generate direct communication parallel symbol data;

a signal gene coding module, configured to complete signal gene coding of direct communication parallel symbol data and relay communication parallel symbol data, to generate unified genetic coded data;

The standard orthogonal wave submodulation module completes the standard orthogonal wave submodulation of the unified gene encoded data, and generates a unified standard orthogonal wave sub-multiplexed baseband signal.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 1, wherein said multi-user communication receiving signal parallel processing component is configured to perform baseband signals received and preprocessed by the antenna array and the radio frequency front end. Parallel processing, simultaneously receiving and recovering raw data sent by multiple source users, completing high-speed, reliable multi-user radio communication reception, including the following modules:

a parallel receiving synchronization module, configured to complete parallel receiving synchronization of the received baseband signal and the multi-user synchronization signal, and extracting a multi-user communication transmitting data baseband signal;

A standard orthogonal wave sub-demodulation module is configured to perform standard orthogonal wave sub-demodulation on a multi-user communication data baseband signal, and extract data genetic coded data sent by multiple users;

Data gene decoding module for completing data genes of data gene encoded data transmitted by multiple users Decoding, extracting received parallel symbol data sent by multiple users;

The data error correction decoding module is configured to complete channel error correction decoding and source decoding of parallel symbol data sent by multiple users, recover system state data and communication original data sent by multiple users, and complete high-speed and reliable multi-user radio communication in parallel. receive.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 1, wherein said multi-user communication relay signal parallel processing component is configured to receive and preprocess the baseband signal to the antenna array and the radio frequency front end. Perform parallel processing, receive and relay the relay data sent by multiple pre-level users at the same time, and complete high-speed and reliable multi-user radio communication relay, including the following modules:

a parallel relay synchronization module, configured to complete parallel relay synchronization of the received baseband signal and the multi-user synchronization signal, and extract a multi-user communication relay data baseband signal;

The standard orthogonal wave sub-demodulation module is configured to complete standard orthogonal wave sub-demodulation of the baseband signal of the multi-user communication relay data, and extract data genetic code data transmitted by the multi-user;

The data gene decoding module is configured to complete data gene decoding of data gene encoded data sent by multiple users, extract relay parallel symbol data sent by multiple users, and complete high-speed and reliable multi-user radio communication parallel relay.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 1, wherein said multi-user passive radar positioning parallel processing component is configured to receive and preprocess at least 4 channels of the antenna array and the RF front end. The baseband signal is processed in parallel, and the relative position information of multiple users is obtained at the same time, and the high-precision, real-time multi-user passive radar positioning is completed, including the following modules:

a multi-user signal identification module, configured to perform identification of a multi-user transmit baseband signal in the received baseband signal, and extract a unified signal gene of the identified user;

a multi-user transmit signal regeneration module for performing standard orthogonal wave sub-demodulation, data gene decoding, data gene re-encoding, and standard orthogonal wave sub-modulation of the identified user data baseband signal, and then generating a data baseband signal transmitted by the identified user;

a multi-user pseudo-range measurement module, configured to perform a digital correlation operation on the received at least four baseband signals and the identified multi-user regenerated baseband signal, and calculate a pseudorange of the identified user to at least four antennas;

The multi-user differential positioning module is used to complete the differential operation of the pseudo-distance of the identified user to at least 4 antennas, calculate the coordinates of the multi-user in the antenna coordinate system, and complete the high-precision, real-time parallel positioning of the multi-user passive radar.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 1, wherein said multi-target active radar detecting integrated processing component is configured to receive and preprocess at least 4 channels of the antenna array and the RF front end. The baseband signal is processed comprehensively, and the relative position information of multiple targets is obtained at the same time, and the high-precision, real-time multi-target active radar detection is completed, including the following modules:

The multi-target identification module mainly performs digital correlation calculation on the received at least four baseband signals and the locally transmitted baseband signals, and calculates an absolute distance of at least four antennas to multiple targets respectively;

The multi-objective feature extraction module mainly performs the comprehensive calculation of the absolute distance of at least four antennas to multiple targets, calculates the coordinates of the multi-object in the antenna coordinate system, and completes the high-precision, real-time multi-target active radar integrated detection.
[Correct according to Rule 26 10.04.2017]
The unified standard orthogonal wave sub-multiplexing radio system according to claim 2, wherein said standard orthogonal wave sub-generation module generates a set of standard orthogonal, energy-concentrated, and time-frequency localities. Standard orthogonal wave; the set of standard orthogonal waves is a ensemble of a large number of quantum formations with the same coherent state |w j >; the quantum coherent state |w j > must satisfy the following constraints:

Among them, the generation of the quantum eigenstate |o j } can be obtained by solving the non-time-dependent Schrödinger equation. The constraints are as follows:

among them,
For the Planck constant,
For the Laplacian, m is the mass of the quantum, and U(r) is the potential energy E of the quantum that is independent of t and does not depend on the constant (energy level) of r.
For the Hamiltonian, ψ E (r) is the spatial component of the quantum state.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 2, wherein said unified signal gene generating module is configured to perform the most time-space domain among a plurality of users for a limited standard orthogonal wave sub-resource Optimize the distribution and generate a unified signal gene; the unified signal genes assigned to the user are composed of a synchronous signal gene and multiple data genes; the synchronization signal gene is mainly used for the wave of the signal. Step, the synchronization precision reaches a sampling interval; the data signal gene is mainly used for signal data transmission, and the standard orthogonal wave sub-distribution principle is that the waves overlapping the same time and space between different users cannot exceed the error correction capability of the error correction code; The signal genes are dynamically generated or configured based on system status and environmental conditions.
A unified standard orthogonal wave sub-multiplexing radio system according to claim 2, wherein said signal gene encoding module performs data genetic coding on direct communication parallel symbol data and relay communication parallel symbol data, Generate unified gene-encoded data with the following constraints:

among them
For the synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, and data trans j is the direct communication parallel symbol data.
For direct communication of data signal genes, data delay j is relay communication parallel symbol data,
To relay communication data signal genes.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 2, wherein the standard orthogonal wave submodulation module performs standard orthogonal wave submodulation on the unified gene encoded data to generate a unified standard orthogonal wave sub-segment The baseband signal is multiplexed with the following constraints:

Where sync j,m is the sync gene encoding data, data j,k is the direct communication or relay communication data gene encoding data, w j (n) is the standard orthogonal wave and N w is the standard orthogonal wave sub-length.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 3, wherein the parallel receiving synchronization module synchronizes parallel reception of the received baseband signal and the multi-user synchronization signal, and extracts multi-user communication transmission. Data baseband signal; parallel reception synchronization first obtains the user's unified signal gene and generates a synchronization signal according to its synchronization signal gene, and then generates the received baseband signal and generates locally The user synchronization signal is digitally correlated, and finally, the synchronous extraction of the data transmission baseband signal of the user communication is completed according to the digital correlation result, and the constraint conditions are as follows:

among them,
For the synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w j (n) is the standard orthogonal wave, N w is the standard orthogonal wave length, s r (n) Is the baseband signal received.
The multi-user communication receiving signal parallel processing component according to claim 3, wherein the standard orthogonal wave sub-demodulation module performs an inner product operation on the extracted user communication transmission data baseband signal and the standard orthogonal wave, and extracts the user transmission. The direct communication data gene encodes data with the following constraints:

among them,
For synchronously receiving user communication data baseband signals, w j (n) is a standard orthogonal wave, and N w is a standard orthogonal wave sub-length.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 3, wherein the data gene decoding module performs intra-row product on the direct communication data gene encoded data sent by the multi-user and the corresponding data gene. The operation extracts the direct communication parallel symbol data sent by multiple users, and the constraints are as follows:

Where data j,k is the direct communication data genetic coded data after standard orthogonal wave sub-demodulation
For the corresponding direct communication data signal genes.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 4, wherein said parallel relay synchronization module performs parallel relay synchronization of the received baseband signal and the multi-relay pre-stage user synchronization signal , extracting a multi-relay pre-stage user relay communication data baseband signal; parallel relay synchronization first obtains a unified signal gene of the pre-relay user and generates a synchronization signal according to the synchronization signal gene, and then The received baseband signal is digitally correlated with the locally generated pre-relay user synchronization signal, and finally the synchronization pre-stage user communication relay data baseband signal is synchronously extracted according to the digital correlation result, and the constraint conditions are as follows:

among them,
In order to relay the pre-level user synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w j (n) is the standard orthogonal wave, and N w is the standard orthogonal wave length. s r (n) is the received baseband signal.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 4, wherein said standard orthogonal wave sub-demodulation module extracts a pre-stage user communication data baseband signal and a standard orthogonal wave carrier The inner product operation is performed to extract the data genetic code data sent by the pre-relay user, and the constraints are as follows:

among them,
For relaying the received pre-relay user communication data baseband signal, w j (n) is a standard orthogonal wave, and N w is a standard orthogonal wave sub-length.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 4, wherein the data gene decoding module performs data genetic coded data and corresponding relay data genes transmitted by the pre-relay user. According to the intra-row product operation, the relay parallel symbol data sent by the pre-relay user is extracted, and the constraint conditions are as follows:

Where data j,k is the data encoded data of the standard orthogonal wave sub-demodulation and
For the corresponding relay data signal genes.
A unified standard orthogonal wave sub-multiplexing radio system according to claim 5, characterized in that The multi-user signal identification module first performs a cyclic digital correlation operation on the received baseband signal and a multi-user synchronization signal in a certain range, and then identifies the user according to the digital correlation result, and extracts the unified signal gene of the identified user. The constraints are as follows:

among them,
For the mth user's synchronization signal gene, M is the number of standard orthogonal wave elements in the synchronization signal gene, α is the synchronization signal amplitude factor, w j (n) is the standard orthogonal wave, N w is the standard orthogonal wave length, s r (n) is the received baseband signal and R o is the decision threshold.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 5, wherein the multi-user transmitting signal regeneration module first performs inner product operation on the synchronized recognized user data baseband signal and the standard orthogonal wave element. Extracting data genetic code data transmitted by the identified user, and then performing data genetic decoding on the extracted data genetic code data sent by the identified user, and finally performing corresponding genetic coding and standard orthogonalization on the parallel decoded data symbol data of the genetic decoding. Waveform modulation, regeneration has identified the data signal sent by the user, the constraints are as follows:

among them,
For the synchronized mth user data baseband signal after synchronization,
For the data signal gene of the identified mth user, w j (n) is a standard orthogonal wave, and N w is a standard orthogonal wave sub-length.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 5, wherein the multi-user pseudo-range measuring module separately generates the baseband signals received by at least four antennas and the radio frequency front end respectively. The user data signal is identified for digital correlation, and the pseudo delay of the identified user to at least 4 antennas is extracted and pseudorange calculation is performed, and the constraint conditions are as follows:

Where s r j (n) is the baseband signal received by the jth antenna and the RF front end, s t (n) is the reproduced data baseband signal of the identified user, R o is the decision threshold, f s is the sampling frequency and c vacuum The speed of light in the middle.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 5, wherein said multi-user differential positioning module adopts two hyperbolic intersection methods to at least four antennas to the identified target The pseudorange performs differential positioning of the identified target, and calculates the coordinates of the identified user in the antenna coordinate system. The constraints are as follows:

Where a 1 , a 2 , a 3 and a 4 are the coordinates of the receiving antenna,
with
The pseudo moment for receiving the antenna to the target.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 6, wherein the multi-target identification module performs the baseband signals received by at least four antennas and the radio frequency front end respectively on the locally transmitted data signals. For digital correlation, extract the absolute delay of at least 4 antennas to multiple targets and calculate the distance. The constraints are as follows:

Where s r j (n) is the baseband signal received by the jth antenna, s t (n) is the locally transmitted data baseband signal, R o is the decision threshold, and f s is the sampling frequency and the speed of light in the c vacuum.
The unified standard orthogonal wave sub-multiplexing radio system according to claim 6, wherein the multi-target feature extraction module uses a plurality of sets of concentric circles to intersect at least four antennas to multiple targets. The distance matrix is comprehensively solved to calculate the coordinates of the multi-object in the antenna coordinate system. The constraints are as follows:

Where a j is the coordinates of the jth antenna,
The absolute distance from the j-th antenna to the multi-target.