CN113691289A

CN113691289A - Signal transmission control method, device and storage medium

Info

Publication number: CN113691289A
Application number: CN202111224751.8A
Authority: CN
Inventors: 李丰军; 周剑光; 孙旭旭
Original assignee: China Automotive Innovation Co Ltd
Current assignee: China Automotive Innovation Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2021-11-23
Anticipated expiration: 2041-10-21
Also published as: CN113691289B

Abstract

The invention provides a signal transmission control method, a signal transmission control device and a storage medium. The signal transmission control method is applied to a radio frequency unit of a transmitting antenna, the radio frequency unit is provided with a plurality of transmitting channels, and the method comprises the following steps: acquiring a plurality of channel groups, wherein the channel groups are obtained by dividing a plurality of transmitting channels of a radio frequency unit, and each channel group comprises a plurality of target channels; and respectively controlling the plurality of channel groups to transmit signals in corresponding time periods, wherein the corresponding time periods of different channel groups are different, and all target channels of the same channel group transmit signals simultaneously in the corresponding time periods. The multiple channel groups sequentially transmit signals in corresponding time periods, one channel group transmits signals in one time period, multiple target channels are arranged in one channel group, and multiple transmitting channels work in one time period, so that the signal transmission efficiency is improved.

Description

Signal transmission control method, device and storage medium

Technical Field

The invention relates to the technical field of 5G antennas, in particular to a signal transmission control method, a signal transmission control device and a storage medium.

Background

A Multiple Input Multiple Output (MIMO) is an antenna system in which multiple antennas are used at both a transmitting end and a receiving end to form multiple channels between transmission and reception in order to greatly increase channel capacity. The obvious characteristic of the MIMO system is that the MIMO system has extremely high spectrum utilization efficiency, and gains in two aspects of reliability and effectiveness are obtained by utilizing space resources on the basis of fully utilizing the existing spectrum resources.

At present, the radar antenna on the market mostly adopts a Time Division Multiple Access (TDMA) signal transmission mode. The time division multiplexing is easy to implement, but the transmission capability of the device is not fully utilized, and the transmission efficiency of the time division multiplexing transmission mode is low, so that the automatic driving vehicle is not favorable for performing related operations more quickly.

Disclosure of Invention

The application provides a signal transmission control method, a signal transmission control device and a storage medium, which can at least solve the technical problem of low transmission efficiency of the existing signal transmission mode.

According to an aspect of the present application, there is provided a signal transmission control method applied to a radio frequency unit of a transmitting antenna, the radio frequency unit being provided with a plurality of transmitting channels, the method including:

obtaining a plurality of channel groups, wherein the channel groups are obtained by dividing the plurality of transmitting channels of the radio frequency unit, and each channel group comprises a plurality of target channels;

and respectively controlling the plurality of channel groups to transmit signals in respective corresponding time periods, wherein the time periods corresponding to different channel groups are different, and all target channels of the same channel group transmit signals simultaneously in the corresponding time periods.

In a possible implementation manner, the number of the channel groups is a first number, and a period of time corresponding to a first channel group in the plurality of channel groups starts to reach a period of time corresponding to a last channel group in the plurality of channel groups ends, and a transmission cycle is formed by consecutive periods of time of the first number;

the respectively controlling the plurality of channel groups to transmit signals in the respective corresponding time periods comprises:

determining a current transmission period;

determining target phase parameters corresponding to each target channel according to the current transmission period;

adjusting the phase of each target channel to a corresponding target phase parameter;

and respectively controlling the first number of channel groups to transmit signals in respective corresponding time periods, wherein the corresponding time periods are the time periods in the current transmission cycle.

In a possible implementation manner, the radio frequency unit includes four cascaded radio frequency chips, and each radio frequency chip is provided with three transmitting channels;

the dividing the plurality of transmission channels of the radio frequency unit includes:

determining a first chip set, a second chip set, a third chip set and a fourth chip set in the four radio frequency chips, wherein each chip set comprises three radio frequency chips;

determining a transmitting channel in each radio frequency chip of the first chip group to obtain a first target channel, a second target channel and a third target channel of the first channel group;

determining a transmitting channel in each radio frequency chip of the second chip set to obtain a first target channel, a second target channel and a third target channel of the second channel set;

determining a transmitting channel in each radio frequency chip of the third chip group to obtain a first target channel, a second target channel and a third target channel of the third channel group;

determining a transmitting channel in each radio frequency chip of the fourth chip group to obtain a first target channel, a second target channel and a third target channel of the fourth channel group;

wherein one transmit channel belongs to one channel group.

In one possible implementation, one transmission cycle includes a first time period, a second time period, a third time period, and a fourth time period;

in four transmission periods which start from a first transmission period and are continuous, the target phase parameters of a first target channel of the four channel groups are all 0;

in four emission periods which start from the first emission period and are continuous, the target phase parameters of the second target channel of the four channel groups are 0, pi/2, pi and 3 pi/2 in sequence;

and in four emission periods which start from the first emission period and are continuous, the target phase parameters of the third target channel of the four channel groups are 0, pi, 0 and pi sequentially.

In one possible implementation manner, the determining, in the four radio frequency chips, a first chip set, a second chip set, a third chip set, and a fourth chip set includes:

determining a first radio frequency chip, a second radio frequency chip and a third radio frequency chip of the four radio frequency chips as the first chip group;

determining the first radio frequency chip, the second radio frequency chip and a fourth radio frequency chip in the four radio frequency chips as the second chip set;

determining the first radio frequency chip, the third radio frequency chip and the fourth radio frequency chip of the four radio frequency chips as the third chip group;

and determining the second radio frequency chip, the third radio frequency chip and the fourth radio frequency chip in the four radio frequency chips as the fourth chip group.

According to another aspect of the present application, there is provided a signal transmission control apparatus applied to a radio unit of a transmitting antenna, the radio unit being provided with a plurality of transmitting channels, the apparatus including:

an obtaining module, configured to obtain a plurality of channel groups, where the plurality of channel groups are obtained by dividing the plurality of transmitting channels of the radio frequency unit, and each channel group includes a plurality of target channels;

and the control module is used for respectively controlling the plurality of channel groups to transmit signals in respective corresponding time periods, wherein the time periods corresponding to different channel groups are different, and all target channels of the same channel group transmit signals simultaneously in the corresponding time periods.

According to another aspect of the present application, there is provided a signal transmission control method applied to a receiving antenna, the method including:

receiving a plurality of channel group signals sent by a plurality of channel groups of a transmitting antenna, wherein the plurality of channel group signals are obtained by respectively transmitting signals in respective corresponding time periods by the plurality of channel groups, the corresponding time periods of different channel groups are different, each channel group comprises a plurality of target channels, and all target channels of the same channel group simultaneously transmit signals in the corresponding time periods;

respectively carrying out distance dimension signal processing on the plurality of channel group signals to obtain distance dimension Fourier signals corresponding to channel signals transmitted by each target channel;

and sequencing the distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel to obtain target signals.

According to another aspect of the present application, the performing distance dimension signal processing on the distance dimension fourier signals corresponding to the plurality of channel group signals, respectively, to obtain the channel signal transmitted by each target channel includes:

respectively carrying out distance dimensional fast Fourier transform processing on the plurality of channel group signals to obtain a plurality of signals to be decoded corresponding to the plurality of channel group signals;

and respectively decoding a plurality of signals to be decoded corresponding to the plurality of channel group signals to obtain distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel.

According to another aspect of the present application, there is provided a signal transmission control apparatus applied to a receiving antenna, the apparatus including:

a receiving module, configured to receive multiple channel group signals sent by multiple channel groups of a transmitting antenna, where the multiple channel group signals are obtained by performing signal transmission on the multiple channel groups in respective corresponding time periods, the time periods corresponding to different channel groups are different, each channel group includes multiple target channels, and all target channels of the same channel group perform signal transmission simultaneously in the corresponding time periods;

the first processing module is used for respectively carrying out distance dimension signal processing on the plurality of channel group signals to obtain distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel;

and the second processing module is used for sequencing the distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel to obtain target signals.

According to another aspect of the present application, there is provided a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method described above.

In the application, a plurality of channel groups carry out signal transmission in corresponding time periods in sequence, one channel group carries out signal transmission in one time period, and a plurality of target channels are arranged in one channel group, namely a plurality of target channels carry out signal transmission in one time period, so that a plurality of transmitting channels work in one time period, and the efficiency of signal transmission is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a corresponding relationship between a transmission channel and a time period in a conventional time division multiplexing technology;

fig. 2 is a flowchart illustrating a signal transmission control method according to an exemplary embodiment of the present invention;

fig. 3 is a flowchart illustrating a signal transmission control method according to another exemplary embodiment of the present invention;

FIG. 4 is a diagram illustrating a relationship between a transmission channel and a time period in the present invention;

FIG. 5 is a diagram illustrating a relationship between a target phase parameter and a transmission period of a transmission channel according to the present invention;

fig. 6 is a flowchart illustrating a signal transmission control method according to still another exemplary embodiment of the present invention;

fig. 7 is a flowchart illustrating a signal transmission control method according to still another exemplary embodiment of the present invention;

FIG. 8 is a schematic diagram of a partial processing of signals of a first channel group according to the present invention;

FIG. 9 is a schematic diagram of the processing of four channel group signals according to the present invention;

fig. 10 is a block diagram illustrating a signal transmission control apparatus according to an exemplary embodiment of the present invention;

fig. 11 is a block diagram illustrating a signal transmission control apparatus according to another exemplary embodiment of the present invention.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

The invention provides a signal transmission control method, a signal transmission control device and a storage medium, which can at least solve the technical problem of low transmission efficiency of the existing signal transmission mode.

With reference to fig. 2 to fig. 3, a signal transmission control method provided in an embodiment of the present disclosure is applied to a radio frequency unit of a transmitting antenna, where the radio frequency unit is provided with a plurality of transmitting channels, and the method includes:

step S101: and acquiring a plurality of channel groups, wherein the channel groups are obtained by dividing a plurality of transmitting channels of the radio frequency unit, and each channel group comprises a plurality of target channels.

In the embodiments of the present specification, the transmitting antennas may be MIMO antennas for transmitting MIMO signals. The radio frequency unit comprises a plurality of cascaded radio frequency chips, the radio frequency chips are electronic components which convert radio signal communication into a certain radio signal waveform and send out the radio signal waveform through antenna resonance, and the architecture of the radio frequency chips comprises a receiving channel and a transmitting channel. In this embodiment of the present description, the transmission channels of all the radio frequency chips in the radio frequency unit are divided, that is, all the transmission channels are divided into groups to obtain a plurality of channel groups, and the transmission channels in the channel groups may be referred to as target channels, where each channel group includes a plurality of target channels. The plurality of target channels may be two target channels or may be two or more target channels. The method can divide a plurality of transmitting channels of the radio frequency unit to obtain division result information in the process of producing and manufacturing the transmitting antenna, and the division result information is set as internal parameters of the transmitting antenna. When the transmitting antenna is started, a plurality of channel groups can be directly obtained according to the dividing result information.

Step S102: and respectively controlling the plurality of channel groups to transmit signals in respective corresponding time periods, wherein the corresponding time periods of different channel groups are different, and all target channels of the same channel group transmit signals simultaneously in the corresponding time periods.

In the embodiment of the present specification, the multiple channel groups may be controlled to sequentially transmit signals according to a preset transmission sequence, specifically, the ith channel group in the multiple channel groups may be controlled to transmit signals in the ith time period, where i is greater than or equal to 1 and is less than or equal to the number of the channel groups, all target channels in the channel groups perform signal transmission when the channel groups perform signal transmission, the transmission of the multiple channel groups is continuous, and the time periods corresponding to different channel groups do not intersect and do not overlap. Different target channels in the same channel group can belong to different radio frequency chips.

In this embodiment of the present description, after all the channel groups are controlled to transmit in the preset transmission sequence, all the channel groups may be repeatedly controlled to transmit signals in the preset transmission sequence, that is, step S102 may be repeated until a preset condition is met, where the preset condition may be that data to be transmitted is transmitted completely, the data to be transmitted may be data to be transmitted by a transmitting antenna, and the preset condition may also be that the working duration of the radio frequency unit reaches a preset duration, which is not limited by the present disclosure.

In the prior art, only one transmitting channel works in any time period, and other transmitting channels are in a dormant state, so that the transmitting channels are not reasonably utilized, and the transmission efficiency is low.

In the embodiment of the present specification, a plurality of channel groups sequentially perform signal transmission in corresponding time periods, one channel group performs signal transmission in one time period, and one channel group has a plurality of target channels, that is, a plurality of target channels perform signal transmission in one time period, so that a plurality of transmission channels operate in one time period, and the efficiency of signal transmission is improved.

In addition, a plurality of target channels transmit signals in a time period, and the receiving antenna can simultaneously receive mixed signals of the signals transmitted by the plurality of target channels in the same channel group, so that the data quantity processed by the receiving antenna before decoding is changed to be one N of the prior art (N is the number of the target channels working in a time period), and the logic resources of a Field Programmable Gate Array (FPGA) are favorably and reasonably utilized.

In a possible implementation manner, the number of the channel groups is a first number, starting from a time period corresponding to a first channel group in the plurality of channel groups and ending at a time period corresponding to a last channel group in the plurality of channel groups, and the continuous time periods of the first number form an emission cycle;

step S102 may include:

step S1021: determining a current transmission period;

step S1022: determining target phase parameters corresponding to each target channel according to the current transmission period;

step S1023: adjusting the phase of each target channel to a corresponding target phase parameter;

step S1024: and respectively controlling the first number of channel groups to transmit signals in respective corresponding time periods, wherein the corresponding time periods are the time periods in the current transmission cycle.

In the embodiment of the specification, a plurality of channel groups sequentially transmit signals according to a preset transmission sequence; a cycle is completed from the start of transmission of the first channel group to the end of transmission of the last channel group in the plurality of channel groups, corresponding to one transmission period.

In this embodiment of the present description, the transmission cycle may be counted when the radio frequency unit is started, the target phase parameter corresponding to each target channel is determined according to the count value corresponding to the current transmission cycle, the phase of each target channel is adjusted to the corresponding target phase parameter, and the target channel is controlled to transmit a signal based on the target phase parameter. In the embodiment of the present specification, phase encoding may be used to distinguish between target channels through phase encoding control, so as to ensure orthogonality of the waveforms of the entire MIMO signals, avoid the MIMO signals from being cancelled out and attenuated in space, and avoid the MIMO signals from being superimposed and increased.

In the prior art, signals of Time Division Multiplexing (TDMA) are distinguished in the Time dimension, signals of Frequency Division Multiplexing (FDMA) are distinguished in the Frequency dimension, signals of Doppler Division Multiple Access (DDMA) are identical in the Time dimension and the Frequency dimension, and phase coding is used for distinguishing between transmission channels. In the prior art, a single TDMA-MIMO waveform reduces the sampling rate of a distance dimension, so that the unambiguous velocity measurement range of a radar system is reduced by times, meanwhile, the excessive wave sending time of a single-subframe radar reduces the point cloud data volume in unit time, and the real-time performance and the reliability of an output target are reduced.

In the embodiment of the specification, a transmission mode combining Time Division Multiplexing (TDMA) and doppler multiple access (DDMA) is used, so that the efficiency of signal transmission is improved. The embodiment of the specification gives consideration to feasibility and performance by a waveform design mode of TDMA + DDMA; the unambiguous velocity measurement range is improved; the wave sending time of the single subframe radar is reduced; through phase encoding, the data volume needing to be processed is greatly reduced, and the resources of the FPGA are saved. Finally, the cost advantage is brought by large-scale improvement of product performance indexes and reduction of device resource requirements.

In one possible implementation manner, the radio frequency unit includes four cascaded radio frequency chips, and each radio frequency chip is provided with three transmitting channels;

determining a first chip set, a second chip set, a third chip set and a fourth chip set in four radio frequency chips, wherein each chip set comprises three radio frequency chips;

wherein one transmit channel belongs to one channel group.

In the embodiment of the present specification, the radio frequency unit includes four cascaded radio frequency chips, each radio frequency chip is provided with three transmitting channels, and the radio frequency unit is provided with twelve transmitting channels, and can be divided into four channel groups; in step S1011, the four radio frequency chips are divided into four different chip sets, each chip set comprises three radio frequency chips, and when the channel set is determined, a transmitting channel is selected from each radio frequency chip of the chip set, so that the three target channels in the same channel set belong to the three radio frequency chips respectively, and multiple transmitting channels of the same radio frequency chip are prevented from working simultaneously; one transmission channel belongs to one channel group, and multiple transmissions of one transmission channel in one transmission period (one cycle) are avoided.

In this embodiment of the present disclosure, signal transmission may be sequentially performed according to an order of a first channel group, a second channel group, a third channel group, and a fourth channel group, where the first channel group is controlled to perform signal transmission in a first time period, the second channel group is controlled to perform signal transmission in a second time period, the third channel group is controlled to perform signal transmission in a third time period, and the fourth channel group is controlled to perform signal transmission in a fourth time period, and the first time period, the second time period, the third time period, and the fourth time period may form a transmission cycle.

in four consecutive transmission periods starting from the first transmission period, the target phase parameters of the first target channel of the four channel groups are all 0;

in four emission periods starting from the first emission period and continuing, the target phase parameters of the third target channel of the four channel groups are 0, pi, 0 and pi in sequence.

In the embodiment of the present specification, the target phase parameters of the first target channels of the four channel groups are all kept to be 0, the target phase parameters of the second target channels of the four channel groups are sequentially cycled at 0, pi/2, pi and 3 pi/2, and the target phase parameters of the third target channels of the four channel groups are cycled at 0, pi, 0 and pi.

In the embodiment of the specification, the feasibility of simultaneous working of 3 transmitting channels is realized through phase coding between bursts of waveforms, orthogonality of the waveforms of the whole MIMO signals can be ensured through coding control of the phases, the MIMO signals are prevented from being weakened due to mutual cancellation in space, and the MIMO signals are prevented from being increased due to mutual superposition; meanwhile, the data can be analyzed conveniently at the receiving antenna side through DDMA decoding, the data of the virtual channel can be rearranged by using the advantages of the FPGA device, and the subsequent angle dimension processing is facilitated.

In one possible implementation, step S1011 includes:

determining a first radio frequency chip, a second radio frequency chip and a third radio frequency chip in the four radio frequency chips as a first chip group;

determining a first radio frequency chip, a second radio frequency chip and a fourth radio frequency chip in the four radio frequency chips as a second chip group;

determining a first radio frequency chip, a third radio frequency chip and a fourth radio frequency chip in the four radio frequency chips as a third chip group;

and determining a second radio frequency chip, a third radio frequency chip and a fourth radio frequency chip in the four radio frequency chips as a fourth chip group.

In the embodiment of the specification, by reasonably arranging the transmitting sequence among the first radio frequency chip, the second radio frequency chip, the third radio frequency chip and the fourth radio frequency chip, the receiving antenna can analyze the received signals conveniently, and the signal transmission efficiency is improved.

In one possible implementation, step S1024 includes:

in a first time period, controlling a first target channel of the first channel group to transmit a first signal, controlling a second target channel of the first channel group to transmit a fifth signal, and controlling a third target channel of the first channel group to transmit a ninth signal;

in a second time period, controlling a first target channel of the second channel group to transmit a second signal, controlling a second target channel of the second channel group to transmit a sixth signal, and controlling a third target channel of the second channel group to transmit a tenth signal;

in a third time period, controlling a first target channel of the third channel group to transmit a third signal, controlling a second target channel of the third channel group to transmit a seventh signal, and controlling a third target channel of the third channel group to transmit an eleventh signal;

in a fourth time period, controlling a first target channel of a fourth channel group to transmit a fourth signal, controlling a second target channel of the fourth channel group to transmit an eighth signal, and controlling a third target channel of the fourth channel group to transmit a twelfth signal;

the first signal, the second signal, the third signal, the fourth signal, the fifth signal, the sixth signal, the seventh signal, the eighth signal, the ninth signal, the tenth signal, the eleventh signal and the twelfth signal are used for the receiving antenna to process and obtain the target signal.

In the embodiment of the present description, target channels in four channel groups respectively transmit signals with different number information, and the receiving antennas perform distance dimension fast fourier transform processing, decoding processing, and sorting processing according to the numbers of the signals to obtain target signals.

In a possible implementation manner, the first target channel of the first channel group may be a first transmit channel of a first radio frequency chip, the second target channel of the first channel group may be a second transmit channel of a second radio frequency chip, and the third target channel of the first channel group may be a third transmit channel of a third radio frequency chip;

the first target channel of the second channel group may be a second transmitting channel of the first rf chip, the second target channel of the second channel group may be a third transmitting channel of the second rf chip, and the third target channel of the second channel group may be a first transmitting channel of the fourth rf chip;

the first target channel of the third channel group may be a third transmitting channel of the first radio frequency chip, the second target channel of the third channel group may be a first transmitting channel of the third radio frequency chip, and the third target channel of the third channel group may be a second transmitting channel of the fourth radio frequency chip;

the first target channel of the fourth channel group may be a first transmit channel of the second rf chip, the second target channel of the fourth channel group may be a second transmit channel of the third rf chip, and the third target channel of the fourth channel group may be a third transmit channel of the fourth rf chip.

In the embodiment of the specification, the corresponding relation between the target channel in the channel group and the transmitting channel in the radio frequency chip is reasonably arranged, so that the receiving antenna can analyze the signal subsequently, and the signal transmission efficiency is improved.

Taking four cascaded radio frequency units as an example, the radio frequency unit includes four cascaded radio frequency chips (MMIC 1, MMIC2, MMIC3 and MMIC 4), each radio frequency chip is provided with three transmit channels (TX 1, TX2 and TX 3), and the radio frequency unit has twelve transmit channels in total.

Referring to fig. 1, in the prior art, a radio frequency unit is controlled to transmit signals in a time division multiplexing manner, and only one transmission channel transmits signals in a time period chirp. The method comprises the steps that a signal 1 is transmitted by a transmission channel TX of an MMIC in a time period chirp, a signal 2 is transmitted by a transmission channel TX of the MMIC in the time period chirp, a signal 3 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 4 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 5 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 6 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 7 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 8 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 9 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 10 is transmitted by the transmission channel TX of the MMIC in the time period chirp, a signal 11 is transmitted by the transmission channel TX of the MMIC in the time period chirp, and a signal 12 is transmitted by the transmission channel TX of the MMIC in the time period chirp. The chirp1, chirp2, chirp3, chirp4, chirp5, chirp6, chirp7, chirp8, chirp9, chirp10, chirp11 and chirp12 form one complete transmission period burst.

Referring to fig. 4, in the embodiment of the present disclosure, the transmit channel TX1 of MMIC1, the transmit channel TX2 of MMIC2, and the transmit channel TX3 of MMIC3 are determined as a first channel group, the transmit channel TX2 of MMIC1, the transmit channel TX3 of MMIC2, and the transmit channel TX1 of MMIC4 are determined as a second channel group, the transmit channel TX3 of MMIC1, the transmit channel TX1 of MMIC3, and the transmit channel TX2 of MMIC4 are determined as a third channel group, and the transmit channel TX1 of MMIC2, the transmit channel TX2 of MMIC3, and the transmit channel TX3 of MMIC4 are determined as a fourth channel group. Controlling the three transmit channels of the first channel group to transmit signals at a first time period chirp1, wherein the transmit channel TX1 of the MMIC1 transmits signal 1 (first signal), the transmit channel TX2 of the MMIC2 transmits signal 5 (fifth signal), and the transmit channel TX3 of the MMIC3 transmits signal 9 (ninth signal); controlling the three transmit channels of the second channel group to transmit signals in a second time period chirp2, wherein the transmit channel TX2 of the MMIC1 transmits signal 2 (second signal), the transmit channel TX3 of the MMIC2 transmits signal 6 (sixth signal), and the transmit channel TX1 of the MMIC4 transmits signal 10 (tenth signal); controlling the three transmit channels of the third channel group to transmit signals in a third time period chirp3, wherein the transmit channel TX3 of the MMIC1 transmits a signal 3 (third signal), the transmit channel TX1 of the MMIC3 transmits a signal 7 (seventh signal), and the transmit channel TX2 of the MMIC4 transmits a signal 11 (eleventh signal); the three transmit channels of the fourth channel group are controlled to transmit signals for a fourth time period chirp4, wherein the transmit channel TX1 of the MMIC2 transmits signal 4 (fourth signal), the transmit channel TX2 of the MMIC3 transmits signal 8 (eighth signal), and the transmit channel TX3 of the MMIC4 transmits signal 12 (twelfth signal). In the embodiment of the present specification, the first, second, third and fourth periods of time chirp1, chirp2, chirp3 and 4 form one transmission period burst.

In contrast, in the prior art, only one transmission channel works in one time period chirp, and 12 transmission channels of the radio frequency unit can work once respectively after 12 time periods chirp. In the embodiment of the present description, a TDMA and DDMA combination mode is used, three transmission channels simultaneously operate in a time slot chirp, and only 4 time slots chirp are needed to enable 12 transmission channels of a radio frequency unit to operate once, where the unambiguous speed range corresponding to the embodiment (TDMA + DDMA) of the present description is 3 times that of the prior art (TDMA), and thus, the embodiment (TDMA + DDMA) of the present description can improve the transmission efficiency of signals. Unambiguous velocity refers to the value of the target radial velocity of the phase from one pulse to the next that the radar is able to measure.

Since the actual duration of the chirp in the embodiment (TDMA + DDMA) of this specification is the same as the actual duration of the chirp in the prior art (TDMA), compared to the prior art, the actual duration of a single burst in the embodiment of this specification is 1/3 in the prior art, the corresponding unambiguous speed range is 3 times that in the prior art, and the amount of data for distance-dimensional FFT performed by the receiving antenna before decoding is 1/3 in the prior art.

In this embodiment, the receiving antenna may analyze the received signals, and sort the signals according to the order of signal 1, signal 2, signal 3, signal 4, signal 5, signal 6, signal 7, signal 8, signal 9, signal 10, signal 11, and signal 12 to obtain the target signal.

As shown in fig. 5, in the first transmission period burst1, the phases of the first target channels of the four channel groups are all 0, the phases of the second target channels of the four channel groups are all 0, and the phases of the third target channels of the four channel groups are all 0. In the second transmit period burst2, the phase of the first target channel of the four channel groups is 0, the phase of the second target channel of the four channel groups is pi/2, the phase of the third target channel of the four channel groups is pi, that is, the phase of the transmit channel TX1 of the MMIC1, the transmit channel TX2 of the MMIC1, the transmit channel TX3 of the MMIC1, and the transmit channel TX1 of the MMIC2 are 0, the phase of the transmit channel TX2 of the MMIC2, the transmit channel TX3 of the MMIC2, the transmit channel TX1 of the MMIC3, and the transmit channel TX2 of the MMIC3 are pi/2, and the phase of the transmit channel TX3 of the MMIC3, the transmit channel TX1 of the MMIC4, the transmit channel TX2 of the MMIC4, and the transmit channel TX3 of the MMIC4 are pi. In the third transmission period burst3, the phases of the first target channels of the four channel groups are all 0, the phases of the second target channels of the four channel groups are all pi, and the phases of the third target channels of the four channel groups are all 0. In the fourth transmission period burst4, the phases of the first target channels of the four channel groups are all 0, the phases of the second target channels of the four channel groups are all 3 pi/2, and the phases of the third target channels of the four channel groups are all pi.

In the embodiment of the present specification, TDMA is performed within a single Burst, so that 3 rf chips simultaneously operate within each time period chirp, and phase coding control is performed between Burst and Burst, thereby implementing orthogonality of the whole MIMO signal waveforms, and thus MIMO signals are not weakened by mutual cancellation in space, and are not increased by mutual superposition.

With reference to fig. 6 and fig. 7, an embodiment of the present specification further provides a signal transmission control method, which is applied to a receiving antenna, and the method includes:

step S201: the method comprises the steps of receiving a plurality of channel group signals sent by a plurality of channel groups of a transmitting antenna, wherein the plurality of channel group signals are obtained by respectively carrying out signal transmission on the plurality of channel groups in respective corresponding time periods, the corresponding time periods of different channel groups are different, each channel group comprises a plurality of target channels, and all target channels of the same channel group carry out signal transmission simultaneously in the corresponding time periods.

In this embodiment, the receiving antenna may be a MIMO antenna, and is configured to receive a MIMO signal. The transmitting antenna may be an MIMO antenna and is configured to transmit an MIMO signal, where the transmitting antenna includes a radio frequency unit, and the radio frequency unit includes multiple cascaded radio frequency chips, in an embodiment of the present specification, transmit channels of all the radio frequency chips in the radio frequency unit are divided, that is, all the transmit channels are divided into groups, so as to obtain multiple channel groups, where the transmit channels in the channel groups may be referred to as target channels, and each channel group includes multiple target channels.

In this embodiment of the present description, signals are transmitted through all target channels in one channel group of a transmitting antenna in a time period, and signals transmitted through each target channel are simultaneously received by a receiving antenna after being mixed, that is, a channel group signal received by the receiving antenna is a signal obtained by mixing signals transmitted through each target channel in the same channel group.

Step S202: and respectively carrying out distance dimension signal processing on the plurality of channel group signals to obtain distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel.

In this embodiment, distance dimension signal processing may be performed according to the channel group signal, and the channel group signal may be distinguished based on the target channel. And performing distance dimension signal processing on the plurality of channel group signals to obtain distance dimension Fourier signals corresponding to the channel signals transmitted by all target channels in the transmitting antenna, and storing the distance dimension Fourier signals corresponding to the channel signals.

Step S203: and sequencing the distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel to obtain target signals.

In this embodiment, the target signal may be a signal that is expected to be known by the transmitting antenna side and the receiving antenna side, and further, the target signal may be stored.

In the prior art, only one transmitting channel of the transmitting antenna works in any time period, and other transmitting channels are in a dormant state, so that the transmitting channels are not reasonably utilized, and the transmission efficiency is low. In the embodiment of the present specification, a plurality of channel groups of the transmitting antenna sequentially perform signal transmission in corresponding time periods, only one channel group performs signal transmission in one time period, and one channel group has a plurality of target channels, that is, a plurality of target channels perform signal transmission in one time period, so that a plurality of transmitting channels operate in one time period, and the efficiency of signal transmission is improved.

In addition, a plurality of target channels transmit signals in a time period, and the receiving antenna can simultaneously receive mixed signals of the signals transmitted by the plurality of target channels in the same channel group, so that the data volume processed by the receiving antenna before decoding is changed to be one N of the prior art (N is the number of the target channels working in the time period), and the FPGA logic resource is favorably and reasonably utilized.

In one possible implementation, step S202 includes:

step S2021: respectively carrying out distance dimension fast Fourier transform processing on the plurality of channel group signals to obtain a plurality of signals to be decoded corresponding to the plurality of channel group signals;

step S2022: and respectively decoding a plurality of signals to be decoded corresponding to the plurality of channel group signals to obtain distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel.

In the embodiment of the present specification, distance dimension fast fourier transform processing is performed on a plurality of channel group signals, distance dimension FFT can be performed in a state of low data volume, and then decoding is performed, so that a distance dimension FFT result of channel signals of 3 target channels is decomposed. The distance dimension FFT result of the channel signal of the target channel can be obtained quickly and efficiently, the data processing amount during distance dimension fast Fourier transform processing is reduced, and the data processing efficiency is improved.

Referring to fig. 8, a radio frequency unit of a transmitting antenna includes four cascaded chips, each chip is provided with three transmitting channels, and a first ADC (ADC 0) of 16 ADC channels of a receiving antenna is taken as an example. The ADC0 receives a first channel group signal chirp1_ ADC _ DATA transmitted by a transmitting antenna in a first time period, performs distance dimension fast fourier transform processing on the first channel group signal to obtain a first signal to be decoded, and performs decoding processing on the first signal to obtain a distance dimension FFT result 1 (0) _ Range _ FFT of the first signal, a distance dimension FFT result 5 (0) _ Range _ FFT of a fifth signal, and a distance dimension FFT result 9 (0) _ Range _ FFT of a ninth signal.

The ADC0 may further receive a second channel group signal chirp2_ ADC _ DATA transmitted by the transmitting antenna in a second time period, perform distance dimension fast fourier transform processing on the second channel group signal to obtain a second signal to be decoded, perform decoding processing on the second signal to be decoded, and obtain a distance dimension FFT result of the second signal, a distance dimension FFT result of the sixth signal, and a distance dimension FFT result of the tenth signal; the ADC0 may further receive a third channel group signal chirp3_ ADC _ DATA transmitted by the transmitting antenna in a third time period, perform distance dimension fast fourier transform processing on the third channel group signal to obtain a third signal to be decoded, and perform decoding processing on the third signal to be decoded to obtain a distance dimension FFT result of the third signal, a distance dimension FFT result of the seventh signal, and a distance dimension FFT result of the eleventh signal; the ADC0 may further receive a fourth channel group signal chirp4_ ADC _ DATA transmitted by the transmitting antenna in a fourth time period, perform distance dimension fast fourier transform processing on the fourth channel group signal to obtain a fourth signal to be decoded, and perform decoding processing on the fourth signal to be decoded to obtain a distance dimension FFT result of the fourth signal, a distance dimension FFT result of the eighth signal, and a distance dimension FFT result of the twelfth signal.

The situation is similar for the other ADC channels of the 16 ADC channels of the receive antenna. Referring to fig. 9, all Chirp (Chirp 1_ ADC _ DATA to Chirp4_ ADC _ DATA) in Burst are decoded into 3 paths of distance dimension FFT results, and 1 (0 to 15) _ Range _ FFT to 12 (0 to 15) _ Range _ FFT is obtained, each corresponding to a corresponding number, and the numbers are firstly buffered in the FPGA, can be sequentially sorted according to the numbers of 1 to 12 channel signals, and then are written into a Double DATA Rate SDRAM (DDR) space. For example, the second channel group signal chirp2_ ADC _ DATA is received by the 16-way ADC, and then 2 (0-15) _ Range _ FFT, 6 (0-15) _ Range _ FFT and 10 (0-15) _ Range _ FFT are obtained after processing, where 2 (0-15) _ Range _ FFT is the distance dimension FFT result of the second signal of the 16-way ADC, and 2 (8) _ Range _ FFT is the distance dimension FFT result of the second signal of the 8-way ADC.

The radio frequency part of the receiving antenna adopts a multi-chip MMIC cascade mode, for a single chip of 3TX (transmitting channel) 4RX (receiving channel), the number of corresponding virtual channels is 12, and for the 4-chip MMIC cascade mode, the number of the virtual channels is 192 corresponding to 12TX 16 RX. Because 192 virtual channels are in an out-of-order state in the TDMA + DDMA manner, in the embodiment of the present specification, the corresponding signals are buffered by the Ultra RAM inside the FPGA, and then the signals are arranged in a new order, so that the sequential reading and calculation during the angle dimension processing are realized.

In the prior art, the receive antennas are 192 channels prior to decoding. In the embodiment of the present specification, the number of virtual channels of the receiving antenna is 64 channels before decoding, and 192 channels after decoding, because of the existence of DDMA, the amount of data processed before decoding is one third compared with the prior art, which is very beneficial to the reasonable utilization of FPGA logic resources.

the multiple channel groups respectively transmit signals in corresponding time periods, and the method comprises the following steps: and the plurality of channel groups are respectively adjusted to target phase parameters in corresponding time periods and carry out signal transmission, and the target phase parameters are determined according to the current transmission period.

In one possible implementation manner, the transmitting antenna includes a radio frequency unit, the radio frequency unit includes four cascaded radio frequency chips, and each radio frequency chip is provided with three transmitting channels; the four channel groups are respectively a first channel group, a second channel group, a third channel group and a fourth channel group, the first channel group is obtained by determining a transmitting channel in each radio frequency chip of the first chip group, the second channel group is obtained by determining a transmitting channel in each radio frequency chip of the second chip group, the third channel group is obtained by determining a transmitting channel in each radio frequency chip of the third chip group, and the fourth channel group is obtained by determining a transmitting channel in each radio frequency chip of the fourth chip group; the first chip set, the second chip set, the third chip set and the fourth chip set are determined from four radio frequency chips, each chip set comprises three radio frequency chips, and one transmitting channel belongs to one channel set.

In a possible implementation manner, the first chip set includes a first radio frequency chip, a second radio frequency chip, and a third radio frequency chip of four radio frequency chips; the second chip group comprises a first radio frequency chip, a second radio frequency chip and a fourth radio frequency chip in the four radio frequency chips; the third chip group comprises a first radio frequency chip, a third radio frequency chip and a fourth radio frequency chip in the four radio frequency chips; the fourth chip group comprises a second radio frequency chip, a third radio frequency chip and a fourth radio frequency chip in the four radio frequency chips.

With reference to fig. 10, an embodiment of the present specification further provides a signal transmission control apparatus, which is applied to a radio frequency unit of a transmitting antenna, where the radio frequency unit is provided with a plurality of transmitting channels, and the apparatus includes:

an obtaining module 100, configured to obtain a plurality of channel groups, where the channel groups are obtained by dividing a plurality of transmitting channels of a radio frequency unit, and each channel group includes a plurality of target channels;

the control module 200 is configured to control the multiple channel groups to perform signal transmission in respective corresponding time periods, where the time periods corresponding to different channel groups are different, and all target channels of the same channel group perform signal transmission in the corresponding time periods simultaneously.

In the embodiment of the present specification, a plurality of channel groups sequentially perform signal transmission in corresponding time periods, only one channel group performs signal transmission in one time period, and one channel group has a plurality of target channels, that is, a plurality of target channels perform signal transmission in one time period, so that a plurality of transmission channels operate in one time period, and the efficiency of signal transmission is improved. In addition, a plurality of target channels are used for signal transmission in a time period, and the receiving antenna can simultaneously receive mixed signals of signals transmitted by the plurality of target channels, so that the processed data volume is greatly reduced, and the reasonable utilization of FPGA logic resources is facilitated.

the control module 200 includes:

a first determination unit for determining a current transmission period;

the second determining unit is used for determining target phase parameters corresponding to all target channels according to the current transmission period;

the adjusting unit is used for adjusting the phase of each target channel to a corresponding target phase parameter;

and the control unit is used for respectively controlling the channel groups with the first quantity to carry out signal transmission in corresponding time periods, wherein the corresponding time periods are the time periods in the current transmission cycle.

the dividing process of the plurality of transmitting channels of the radio frequency unit comprises the following steps:

a third determining unit, configured to determine, among the four radio frequency chips, a first chip set, a second chip set, a third chip set, and a fourth chip set, where each chip set includes three radio frequency chips;

a fourth determining unit, configured to determine a transmitting channel in each rf chip of the first chip group, so as to obtain a first target channel, a second target channel, and a third target channel of the first channel group;

a fifth determining unit, configured to determine a transmitting channel in each radio frequency chip of the second chipset, so as to obtain a first target channel, a second target channel, and a third target channel of the second chipset;

a sixth determining unit, configured to determine a transmitting channel in each radio frequency chip of the third chip group, so as to obtain a first target channel, a second target channel, and a third target channel of the third channel group;

a seventh determining unit, configured to determine a transmitting channel in each radio frequency chip of the fourth chip group, so as to obtain a first target channel, a second target channel, and a third target channel of the fourth channel group;

wherein one transmit channel belongs to one channel group.

In one possible implementation manner, the third determining unit includes:

the first determining subunit is used for determining a first radio frequency chip, a second radio frequency chip and a third radio frequency chip in the four radio frequency chips as a first chip group;

the second determining subunit is used for determining a first radio frequency chip, a second radio frequency chip and a fourth radio frequency chip in the four radio frequency chips as a second chip group;

the third determining subunit is configured to determine, as a third chip group, a first radio frequency chip, a third radio frequency chip, and a fourth radio frequency chip of the four radio frequency chips;

and the fourth determining subunit is used for determining a second radio frequency chip, a third radio frequency chip and a fourth radio frequency chip in the four radio frequency chips as a fourth chip group.

With reference to fig. 11, an embodiment of the present specification further provides a signal transmission control apparatus, applied to a receiving antenna, where the apparatus includes:

a receiving module 300, configured to receive multiple channel group signals sent by multiple channel groups of a transmitting antenna, where the multiple channel group signals are obtained by performing signal transmission on the multiple channel groups in respective corresponding time periods, the time periods corresponding to different channel groups are different, each channel group includes multiple target channels, and all target channels of the same channel group perform signal transmission simultaneously in the corresponding time periods;

a first processing module 400, configured to perform distance dimension signal processing on the multiple channel group signals respectively to obtain distance dimension fourier signals corresponding to channel signals transmitted by each target channel;

the second processing module 500 is configured to perform sorting processing on distance dimension fourier signals corresponding to channel signals transmitted by each target channel to obtain target signals.

In one possible implementation, the first processing module 400 includes:

the first processing unit is used for respectively carrying out distance dimension fast Fourier transform processing on the plurality of channel group signals to obtain a plurality of signals to be decoded corresponding to the plurality of channel group signals;

and the second processing unit is used for respectively decoding a plurality of signals to be decoded corresponding to the plurality of channel group signals to obtain distance dimension Fourier signals corresponding to the channel signals transmitted by each target channel.

It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the apparatus may be divided into different functional modules to implement all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.

Furthermore, embodiments of the present specification also provide a non-volatile computer-readable storage medium on which computer program instructions are stored, the computer program instructions, when executed by a processor, implement the signal transmission control method described above.

The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present application.

The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.

The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.

The computer program instructions for carrying out operations of the present application may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry can execute computer-readable program instructions to implement aspects of the present application by utilizing state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).

Various aspects of the present application are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A signal transmission control method, applied to a radio unit of a transmitting antenna, the radio unit being provided with a plurality of transmitting channels, the method comprising:

2. The signal transmission control method according to claim 1, wherein the number of the channel groups is a first number, and a period of time corresponding to a first channel group among the plurality of channel groups starts until a period of time corresponding to a last channel group among the plurality of channel groups ends, and consecutive periods of time of the first number form one transmission cycle;

determining a current transmission period;

3. The signal transmission control method according to claim 2, wherein the radio frequency unit includes four cascaded radio frequency chips, each of which is provided with three transmission channels;

wherein one transmit channel belongs to one channel group.

4. The signal transmission control method according to claim 3, wherein one transmission cycle includes a first period, a second period, a third period, and a fourth period;

5. The signal transmission control method of claim 3, wherein the determining of the first chip group, the second chip group, the third chip group, and the fourth chip group among the four radio frequency chips comprises:

6. A signal transmission control apparatus, applied to a radio frequency unit of a transmitting antenna, the radio frequency unit being provided with a plurality of transmitting channels, the apparatus comprising:

7. A signal transmission control method applied to a receiving antenna, the method comprising:

8. The signal transmission control method according to claim 7, wherein the performing distance dimension signal processing on the distance dimension fourier signals corresponding to the plurality of channel group signals, respectively, to obtain the channel signal transmitted by each target channel comprises:

9. A signal transmission control apparatus, applied to a receiving antenna, the apparatus comprising:

10. A non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method of any one of claims 1 to 5 or 7 to 8.