Implementation method of large-scale phased array simulation instrument

Abstract

The application discloses a kind of implementation methods of large-scale phased array simulation instrument, including by designing signal processing module and gigabit network interface cooperation use, make single camera control simulation instrument gauge realize the simulation of thousands of array scale under the premise of 64 physical ports.The application breaks through the bottleneck of traditional phased array simulation instrument relying on hardware stacking by innovative signal processing architecture and high-speed data interface technology.Compared with the scheme that traditional method needs to simulate large-scale array by increasing physical port or complex cascade of multiple devices, the application realizes the leap of efficiently simulating thousands of array elements scale with single integrated device, which not only greatly reduces the hardware cost of system construction, but also fundamentally simplifies the system topology, avoids complex wiring and synchronization problems, thereby providing an efficient and flexible solution for large-scale array simulation required by satellite communication, sensing integration and other frontier technical fields with higher cost performance and reliability.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and specifically to a method for implementing a large-scale phased array simulator. Background Technology

[0002] Traditional phased array simulators typically employ phase shifting and amplitude control to achieve multi-beam simulation. With the development of wireless communication, such as satellite communication and integrated sensing, the demand for large-scale arrays has increased. For arrays with hundreds or thousands of units, traditional phased array simulators can only achieve large-scale array simulation by adding physical ports or cascading multiple units. This simulation method is both costly and has a complex topology.

[0003] Therefore, this invention provides a method for implementing a large-scale phased array simulator that achieves high-precision simulation of a large-scale phased array with thousands of array elements on a single device with limited physical ports. Summary of the Invention

[0004] The purpose of this invention is to provide a method for implementing a large-scale phased array simulator, the method specifically including the following steps:

[0005] S1, when there is a far-field point The space angle is Furthermore, the radiation patterns of the elements to be simulated are the same. Taking the first element as the reference point, the radiation pattern of a single element is... Assuming the number of elements in the simulation is For space angle ,That A period of time relative to the spatial angle The steering vector can be expressed as:

[0006] (1)

[0007] in, Indicates the interval between phases. The function representing the steering vector is calculated according to the following formula:

[0008] (2)

[0009] in, Indicates wavelength;

[0010] S2, the weight vector is represented as:

[0011] (3)

[0012] in, Represents the weight vector. Indicates the number of intervals;

[0013] Then receive the signal Represented as:

[0014] (4)

[0015] in, Indicates conjugate transpose;

[0016] S3. In phased array scenario simulation, users need to configure the positions of the transceiver ends and the array elements and layout of the TR components according to the scenario plan, and calculate the steering vector offline through the geometric relationship of the positions. weight vector These are variables controlled by the user equipment. To obtain the weight vector, the design requirements can only be met by establishing a high-speed interface between the user equipment and the phased array simulation equipment to transmit the weight vector. Compared to traditional phase shifters, a high-speed interface exists to transmit wave control information. For a certain input signal of the phase shifter... , Representing physics

[0017] The index of the input port, the signal of a certain output port. The complex gain of traditional phase shifter interleaved networks is used express, The index of the output physical port is represented by the following formula:

[0018] (5)

[0019] in, Indicates the space angle as The guide vector;

[0020] S4. For a phase shifter, it is represented as:

[0021] (6)

[0022] in, The antenna index represents the transmitting antenna. Indicates the antenna index of the receiving antenna. Indicates the first Vertical radiation pattern of each receiving antenna Indicates the first The horizontal radiation pattern of each receiving antenna Indicates the first The vertical radiation pattern of each transmitting antenna Indicates the first The horizontal radiation pattern of each transmitting antenna This represents the coordinates of the receiving end in the spherical coordinate system. This represents the coordinates of the transmitter in a spherical coordinate system. express The coordinate vector of the root transmitting antenna, Indicates the first The coordinate vector of the root receiving antenna, Indicates wavelength. Represents the relative velocity vector;

[0023] S5. For traditional phase shifters:

[0024] (7)

[0025] S6. Traditional phase shifters are analog devices. It is achieved by using analog chips and analog amplitude modulation chips. Comparing formulas (5) and (7), let:

[0026] (8)

[0027] in, This indicates the impact of base station beamforming on the phase-shifting network. OFDM symbol-level beamforming requires 35µs. Therefore:

[0028] (9)

[0029] in, Indicates the number of transmission ports.

[0030] Furthermore, as can be seen from formula (7) in S5 and formula (9) in S6, the phase shifter can adopt the architecture of a traditional phase shifter, that is, the actual phase shifter has One antenna port, which can simulate This is a feature that will be available for a while.

[0031] Furthermore, the phase shifter in formula (7) of S5 is refreshed using a gigabit network programmable method. The interval is on the order of 10ms, and the refresh time of formula (7) is 35us.

[0032] Furthermore, in formula (4) of S1, when the weight vector is obtained... ,but This is a simulation that can achieve its function without actually existing.

[0033] The present invention has the following advantages: by designing a signal processing module to work in conjunction with a 10 Gigabit Ethernet interface, the present invention enables a single camera-controlled simulation instrument to achieve simulation of thousands of arrays with only 64 physical ports.

[0034] This invention, through the collaborative design of core signal processing algorithms and high-speed 10 Gigabit Ethernet interfaces, achieves high-precision simulation of large-scale phased arrays with thousands of elements on a single device with limited physical ports. This innovation breaks the dependence of traditional simulators on the number of hardware components and the complexity of cascading, significantly reducing system purchase and maintenance costs, and fundamentally simplifying the system architecture. It avoids the synchronization and interconnection problems caused by cascading multiple devices, thus providing a powerful and efficient simulation platform for the research and development of advanced wireless communication technologies such as satellite communication and integrated sensing, with extremely high integration and flexibility. Attached Figure Description

[0035] Figure 1 This is a simulation diagram of the array of the present invention;

[0036] Figure 2 This is a schematic diagram of the array of the present invention;

[0037] Figure 3 This is a diagram of the internal architecture of the phase shifter of the present invention. Detailed Implementation

[0038] This invention provides a method for implementing a large-scale phased array simulator.

[0039] Example 1

[0040] S1, such as Figure 1 As shown, assuming This represents the narrowband signal received by a uniform linear array qubit, if there exists a far-field point. The space angle is Furthermore, the radiation patterns of the elements to be simulated are the same. Taking the first element as the reference point, the radiation pattern of a single element is... Assuming the number of elements in the simulation is For space angle ,That A period of time relative to the spatial angle The steering vector can be expressed as:

[0041] (1)

[0042] in, Indicates the interval between phases. The function representing the steering vector is calculated according to the following formula:

[0043] (2)

[0044] in, Indicates wavelength;

[0045] S2, the weight vector is represented as:

[0046] (3)

[0047] Among them, among them, Represents the weight vector. Indicates the number of intervals;

[0048] like Figure 2 As shown in the figure, formula (3) shows that if the weight vector can be obtained... ,but For a while, simulations that can achieve their functions without actually existing can be used. Figure 2 It can be seen that as long as the guide vector can be obtained... Sum of weight vectors This allows the function of the subarray to be simulated in the signal processor without the need for a real physical interface, providing the possibility of large-scale phased arrays for hardware.

[0049] Then receive the signal Represented as:

[0050] (4)

[0051] in, Indicates conjugate transpose;

[0052] S3. In phased array scenario simulation, users need to configure the positions of the transceiver ends and the array elements and layout of the TR components according to the scenario plan, and calculate the steering vector offline through the geometric relationship of the positions. weight vector These are variables controlled by the user equipment. To obtain the weight vector, the design requirements can only be met by establishing a high-speed interface between the user equipment and the phased array simulation equipment to transmit the weight vector. Compared to traditional phase shifters, a high-speed interface exists to transmit wave control information. For a certain input signal of the phase shifter... A signal at a certain output port The complex gain of traditional phase shifter interleaved networks is used express, The index of the output physical port is represented by the following formula:

[0053] (5)

[0054] in, Indicates the space angle as The guide vector;

[0055] S4. For a phase shifter, it is represented as:

[0056] (6)

[0057] in, The antenna index represents the transmitting antenna. Indicates the antenna index of the receiving antenna. Indicates the first Vertical radiation pattern of each receiving antenna Indicates the first The horizontal radiation pattern of each receiving antenna Indicates the first The vertical radiation pattern of each transmitting antenna Indicates the first The horizontal radiation pattern of each transmitting antenna This represents the coordinates of the receiving end in the spherical coordinate system. This represents the coordinates of the transmitter in a spherical coordinate system. express The coordinate vector of the root transmitting antenna, Indicates the first The coordinate vector of the root receiving antenna, Indicates wavelength. Represents the relative velocity vector;

[0058] S5. For traditional phase shifters:

[0059] (7)

[0060] like Figure 3 As shown, the phase shifter in formula (7) is refreshed using a gigabit network programmable method. The interval is on the order of 10ms, and the refresh time of formula (7) is 35us;

[0061] S6. Traditional phase shifters are analog devices. It is achieved by using analog chips and analog amplitude modulation chips. Comparing formulas (5) and (7), let:

[0062] (8)

[0063] in, This indicates the impact of base station beamforming on the phase-shifting network. OFDM symbol-level beamforming requires 35µs. Therefore:

[0064] (9)

[0065] in, Indicates the number of transmission ports.

[0066] Although specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of the present invention. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims are still within the scope of protection of the present invention.

Claims

1. A method for implementing a large-scale phased array simulator, characterized in that: The method specifically includes the following steps: S1, when there is a far-field point The space angle is Furthermore, the radiation patterns of the elements to be simulated are the same. Taking the first element as the reference point, the radiation pattern of a single element is... Assuming the number of elements in the simulation is For space angle ,That A period of time relative to the spatial angle The steering vector can be expressed as: （1） in, Indicates the interval between phases. The function representing the steering vector is calculated according to the following formula: （2） in, Indicates wavelength; S2, the weight vector is represented as: （3） in, Represents the weight vector. Indicates the number of intervals; Then receive the signal Represented as: （4） in, Indicates conjugate transpose; S3. In phased array scenario simulation, users need to configure the positions of the transceiver ends and the array elements and layout of the TR components according to the scenario plan, and calculate the steering vector offline through the geometric relationship of the positions. weight vector These are variables controlled by the user equipment, used to obtain the steering vector. Only by establishing a high-speed interface between the user equipment and the phased array simulation equipment to transmit the weight vector can this be achieved. To meet design requirements, compared to traditional phase shifters, it has a high-speed interface for transmitting wave control information, for a certain input signal of the phase shifter. A signal at a certain output port The complex gain of traditional phase shifter interleaved networks is used express, The index of the output physical port is represented by the following formula: （5） in, Indicates the space angle as The guide vector; S4. For a phase shifter, it is represented as: （6） in, The antenna index represents the transmitting antenna. Indicates the antenna index of the receiving antenna. Indicates the first Vertical radiation pattern of each receiving antenna Indicates the first The horizontal radiation pattern of each receiving antenna Indicates the first The vertical radiation pattern of each transmitting antenna Indicates the first The horizontal radiation pattern of each transmitting antenna This represents the coordinates of the receiving end in the spherical coordinate system. This represents the coordinates of the transmitter in a spherical coordinate system. express The coordinate vector of the root transmitting antenna, Indicates the first The coordinate vector of the root receiving antenna, Indicates wavelength. Represents the relative velocity vector; S5. For traditional phase shifters: （7） S6. Traditional phase shifters are analog devices. It is achieved using analog chips and analog amplitude modulation chips. Comparing formulas (5) and (7), let: （8） in, This indicates the impact of base station beamforming on the phase-shifting network. OFDM symbol-level beamforming requires 35µs. Therefore: （9） in, Indicates the number of transmission ports.

2. The method for implementing a large-scale phased array simulator as described in claim 1, characterized in that: As can be seen from formula (7) in S5 and formula (9) in S6, the phase shifter can adopt the architecture of a traditional phase shifter, that is, the actual phase shifter has One antenna port, which can simulate This is a feature that will be available for a while.

3. The method for implementing a large-scale phased array simulator as described in claim 1, characterized in that: The phase shifter in formula (7) of S5 is refreshed using a gigabit network programmable method. The interval is on the order of 10ms, and the refresh time of the formula (7) is 35us.

4. The implementation method of a large-scale phased array simulator as described in claim 1, characterized in that: In formula (4) of S1, when the weight vector is obtained... ,but This is a simulation that can achieve its function without actually existing.

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