Transmitting end module, receiving end module and transceiver for simulated image transmission of unmanned aerial vehicle

Abstract

The invention provides a transmitting end module, a receiving end module and a transceiver for analog image transmission of an unmanned aerial vehicle, and the transmitting end module is characterized in that a mixer is used for carrying out up-conversion processing on an analog signal output by an analog camera, and a power amplification module is used for amplifying a radio frequency signal after up-conversion; the amplified radio frequency signal is transmitted outwards through the transmitting antenna; a frequency mixer of the receiving end module is used for performing down-conversion processing on a radio frequency signal acquired by a receiving antenna, a signal processing module is used for demodulating and filtering an intermediate frequency signal after down-conversion, and image display is performed through a display device; wherein the transmitting and receiving frequencies of the transmitting end module and the receiving end module are configured in a range of 30MHz to 5500MHz. An integrated architecture with a mixer as a core replaces a traditional multi-chip combination, power consumption is indirectly reduced, the cruising ability of the unmanned aerial vehicle is improved, a remote control frequency band can be flexibly avoided through wide frequency band configuration, and simultaneous work of simulated image transmission and flight remote control is achieved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of unmanned aerial vehicle (UAV) analog image transmission (AIT) communication chip, and in particular, to a transmitting end module, a receiving end module and a transceiver for UAV AIT. BACKGROUND

[0002] At present, in the field of UAV AIT, a wireless transmission system based on FM modulation is widely used to realize wireless transmission of image signals. In the prior art, such a system usually adopts a multi-chip combination architecture, and the working frequency band is fixed at 3.2 GHz. The transmitting end of the system needs to be processed by multiple discrete chips (such as frequency conversion chips and amplification chips) in sequence and then transmitted through an antenna. The receiving end is processed by multiple demodulation chips and then transmitted to a display device.

[0003] However, the prior art has many deficiencies. Firstly, the system relies on multiple chip combinations for work, which not only leads to complex device structure and high overall cost, but also relies on imported core chips, which has the risk of unstable supply. Secondly, the 800 MHz intermediate frequency signal of the transmitting end overlaps with the flight remote control frequency band of the UAV, which is easy to cause mutual interference, so that the analog image transmission and the flight remote control cannot be performed simultaneously, which seriously affects the operation safety and use convenience of the UAV. Thirdly, the multi-chip combination architecture makes the overall power consumption of the system high, which significantly limits the standby time of the UAV battery and reduces the endurance of the device. Fourthly, the transmitting spectrum bandwidth of the existing system is wide, and the actual measurement occupies nearly 20 MHz, which has low spectrum utilization efficiency and is not conducive to the rational use of limited spectrum resources.

[0004] Therefore, there is an urgent need for a UAV analog image transmission signal processing scheme that can solve the above technical problems. SUMMARY

[0005] The embodiments of the present disclosure at least provide a transmitting end module, a receiving end module and a transceiver for UAV analog image transmission to solve the above technical problems, which have the advantages of low cost, low power consumption and high spectrum utilization.

[0006] In a first aspect, the embodiments of the present disclosure provide a transmitting end module for UAV analog image transmission, which comprises an analog camera, a mixer, a power amplification module and a transmitting antenna that realize signal transmission in sequence. The analog camera is configured to collect analog signals. The mixer is configured to perform up-conversion processing on the analog signals output by the analog camera. The power amplification module is configured to amplify the radio frequency signals after up-conversion. The transmitting antenna is configured to transmit the amplified radio frequency signals to a receiving end module. The transmission frequency of the transmitter module is configured in the range of 30MHz-5500MHz in AM modulation mode.

[0007] In one possible implementation, the signal spectrum emitted by the transmitting module occupies a bandwidth of no more than ±5MHz centered on the carrier frequency.

[0008] In one possible implementation, the mixer includes a local oscillator unit, a frequency conversion processing unit, and a filtering unit; The local oscillator unit is used to provide the local oscillator signal required for frequency conversion; The frequency conversion processing unit is used to convert the frequency of the input signal to the target frequency band; The filtering unit is used to perform preliminary filtering on the frequency-converted signal.

[0009] In one possible implementation, the power amplification module is a front-end power amplifier used to amplify the radio frequency signal output by the mixer to a preset transmit power.

[0010] In one possible implementation, the analog signal bandwidth acquired by the analog camera is within 10MHz.

[0011] Secondly, this disclosure also provides a receiver module for simulated image transmission of unmanned aerial vehicles, including a receiving antenna, a mixer, a signal processing module and a display device that sequentially realize signal transmission; The receiving antenna is used to receive radio frequency signals transmitted by the transmitting module; The mixer is used to perform down-conversion processing on the radio frequency signal; The signal processing module is used to demodulate and filter the down-converted intermediate frequency signal; The display device is used to display images based on the processed signals; The receiving frequency of the receiving module is configured in the range of 30MHz-5500MHz in AM modulation mode.

[0012] In one possible implementation, the signal processing module includes an envelope detection unit and an intermediate frequency filtering unit; The envelope detection unit includes a diode detection circuit, which is used to detect the boundary curve of the signal envelope amplitude changing over time in order to achieve signal demodulation. The intermediate frequency filtering unit is used to filter out the residual intermediate frequency signal after down-conversion.

[0013] In one possible implementation, the display device is an analog display device, used to receive signals processed by the signal processing module and display images.

[0014] Thirdly, this disclosure also provides a transceiver for simulated image transmission of unmanned aerial vehicles, including a transmitter module and a receiver module; The transmitter module includes an analog camera, a mixer, a power amplifier module, and a transmitting antenna, which sequentially realize signal transmission. The mixer is used to upconvert the analog signal output by the analog camera. The power amplifier module is used to amplify the upconverted radio frequency signal and transmit the amplified radio frequency signal outward through the transmitting antenna. The receiving module includes a receiving antenna, a mixer, a signal processing module, and a display device that sequentially transmit signals. The mixer is used to down-convert the radio frequency signal acquired by the receiving antenna. The signal processing module is used to demodulate and filter the down-converted intermediate frequency signal and display the image through the display device. The transmit and receive frequencies of the transmitting module and the receiving module are configured in the range of 30MHz-5500MHz in AM modulation mode.

[0015] In one possible implementation, the mixer is an integrated device that performs up-conversion of the transmitting module and down-conversion of the receiving module.

[0016] Fourthly, this disclosure also provides a method for simulating image transmission from a UAV, applied to the transceiver described in the third aspect and its embodiments, the method comprising: Transmitter module processing steps: The analog camera collects the analog signal, which is then up-converted by the mixer and transmitted through the power amplifier and antenna in sequence; Receiver module processing steps: The receiving antenna receives the signal, which is then down-converted by the mixer, demodulated and filtered in sequence, and then transmitted to the display device for display. The transmit and receive frequencies are configured within the range of 30MHz-5500MHz in AM modulation mode.

[0017] The aforementioned transmitter module, receiver module, transceiver, and method for UAV simulated image transmission utilize a transmitter module in which a mixer up-converts the analog signal output from the analog camera, a power amplifier module amplifies the up-converted radio frequency signal, and transmits the amplified radio frequency signal through a transmitting antenna. In the receiver module, a mixer down-converts the radio frequency signal acquired by the receiving antenna, a signal processing module demodulates and filters the down-converted intermediate frequency signal, and displays the image through a display device. This disclosure uses an integrated architecture centered on a mixer, replacing traditional multi-chip combinations. This solves the problems of complex device structures, high costs, and reliance on imported chips, indirectly reducing power consumption and improving UAV endurance. Furthermore, wide frequency configuration allows for flexible avoidance of remote control frequency bands, enabling simultaneous operation of both simulated image transmission and flight remote control.

[0018] Other advantages of this disclosure will be explained in more detail in conjunction with the following description and accompanying drawings.

[0019] It should be understood that the above description is merely an overview of the technical solution of this disclosure, so as to provide a general understanding of the technical means of this disclosure and to implement it in accordance with the contents of the specification. In order to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are illustrated below. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. The accompanying drawings are incorporated in and constitute a part of this specification. These drawings illustrate embodiments conforming to this disclosure and, together with the specification, serve to illustrate the technical solutions of this disclosure. It should be understood that the drawings only illustrate certain embodiments of this disclosure and should not be considered as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. Furthermore, the same reference numerals denote the same components throughout the drawings. In the drawings: Figure 1 A schematic diagram of a transceiver module for simulated image transmission of a drone provided in an embodiment of this disclosure is shown; Figure 2 This illustration shows a schematic diagram of the operation of a transceiver for simulated image transmission of a drone, provided in an embodiment of this disclosure. Figure 3 This illustration shows a schematic diagram of a transmitter module for simulated image transmission of a drone, provided in an embodiment of this disclosure. Figure 4 This illustration shows a specific schematic diagram of a mixer in a transmitter module for simulated image transmission of a drone provided in an embodiment of this disclosure; Figure 5 This illustration shows a schematic diagram of the application of a mixer in a transmitter module for simulated image transmission of a drone, provided in an embodiment of this disclosure. Figure 6 A schematic diagram of a receiver module for simulated image transmission of a drone provided in an embodiment of this disclosure is shown. Figure 7 This illustration shows a specific schematic diagram of the signal processing module in a receiver module for simulated image transmission of a drone provided in an embodiment of this disclosure. Detailed Implementation

[0021] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0022] In the description of embodiments disclosed herein, it should be understood that terms such as “comprising” or “having” are intended to indicate the presence of the disclosed features, figures, steps, behaviors, components, portions or combinations thereof in this specification, and do not exclude the possibility of the presence of one or more other features, figures, steps, behaviors, components, portions or combinations thereof.

[0023] Unless otherwise stated, " / " means "or". For example, A / B can mean A or B. In this article, "and / or" is merely a way of describing the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A alone, A and B at the same time, and B alone.

[0024] The terms "first," "second," etc., are used only for ease of description to distinguish identical or similar technical features and should not be construed as indicating or implying the relative importance or number of these technical features. Therefore, a feature defined by "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, the term "multiple" means two or more.

[0025] Research has revealed that in the field of drone analog image transmission, FM-modulated wireless transmission systems are currently widely used, operating at a frequency of 3.2GHz. This approach has the following drawbacks: 1. It requires multiple chips, resulting in high costs, and some core chips are imported, posing supply risks; 2. The 800MHz intermediate frequency signal at the transmitting end interferes with the remote control frequency, making simultaneous analog image transmission and flight remote control impossible; 3. The system consumes a large amount of power, limiting battery standby time.

[0026] To at least partially solve one or more of the above-mentioned problems and other potential problems, this disclosure provides a highly integrated transmitter module, receiver module, transceiver, and method for UAV simulated image transmission, which mainly has the following technical advantages: 1. Simplify structure, reduce cost and risk: By replacing the traditional multi-chip combination with an integrated mixer, the number of components is reduced, costs are lowered, and reliance on imported chips is eliminated, solving problems such as "complex structure, high cost, and supply risk"; 2. Eliminate signal crosstalk: The 30MHz-5500MHz wideband configuration can flexibly avoid the remote control frequency band, enabling simultaneous analog image transmission and flight remote control, thus solving the "frequency band conflict" problem; 3. Improve spectrum utilization efficiency: The transmit signal bandwidth is ≤10MHz (traditionally 20MHz), which doubles the spectrum utilization rate and solves the problem of "spectrum waste"; 4. Reduced power consumption: The integrated design reduces signal transmission link loss, lowers the overall system power consumption, and extends the drone's flight time; 5. Enhanced reception stability: The non-zero intermediate frequency architecture (down-conversion, envelope detection, and intermediate frequency filtering) avoids the influence of the phase difference between transmission and reception, thus improving the stability of signal reception.

[0027] To facilitate understanding of this embodiment, a transceiver for simulated image transmission of unmanned aerial vehicles (UAVs) disclosed in this disclosure will first be described in detail. (See also...) Figure 1 The diagram illustrates the architecture of a transceiver provided in an embodiment of this disclosure. The transceiver includes a transmitter module and a receiver module; wherein: The transmitting module includes an analog camera 1, a mixer 2, a power amplifier module 3, and a transmitting antenna 4, which sequentially realize signal transmission. The mixer 2 is used to upconvert the analog signal output by the analog camera 1. The power amplifier module 3 is used to amplify the upconverted radio frequency signal and transmit the amplified radio frequency signal outward through the transmitting antenna 4. The receiving module includes a receiving antenna 5, a mixer 2, a signal processing module 6, and a display device 7, which sequentially realize signal transmission. The mixer 2 is used to down-convert the radio frequency signal acquired by the receiving antenna 5. The signal processing module 6 is used to demodulate and filter the down-converted intermediate frequency signal and display the image through the display device 7. The transmit and receive frequencies of the transmitting module and the receiving module are configured in the range of 30MHz-5500MHz in AM modulation mode.

[0028] In this embodiment of the transmitter module, the analog camera 1 acquires analog image signals captured by the drone and outputs the analog signals to the mixer 2; the mixer 2 receives the analog signals output by the analog camera 1 and performs up-conversion processing on them to convert the analog signals into radio frequency signals; the power amplifier module 3 receives the radio frequency signals output by the mixer 2 and amplifies the radio frequency signals to meet the power requirements of wireless transmission; the transmitting antenna 4 receives the radio frequency signals amplified by the power amplifier module 3 and transmits them outward.

[0029] In this embodiment of the present disclosure, the receiving module receives the radio frequency signal transmitted by the transmitting module via the receiving antenna 5 and transmits it to the mixer 2. The mixer 2 receives the radio frequency signal acquired by the receiving antenna 5 and performs down-conversion processing on it to convert the radio frequency signal into an intermediate frequency signal. The signal processing module 6 receives the intermediate frequency signal output by the mixer 2 and performs demodulation and filtering processing on the intermediate frequency signal to restore a recognizable image signal. The display device 7 receives the image signal processed by the signal processing module 6 and displays the image for the user to view the content captured by the drone.

[0030] In practical applications, the analog camera 1 acquires analog image signals (such as real-time scene images) captured by the drone and directly inputs the signal into the mixer 2; the mixer 2 performs up-conversion processing on the analog signal, for example, converting it into a 3.2GHz radio frequency signal (this frequency is in the range of 30MHz-5500MHz and avoids the 2.4GHz remote control frequency band of the drone); the power amplifier module 3 can then amplify the 3.2GHz radio frequency signal to a preset power (such as 4W) and then transmit the radio frequency signal through the transmitting antenna 4.

[0031] The receiving antenna 5 receives the radio frequency signal and transmits it to the mixer 2 of the receiving module; the mixer 2 performs down-conversion processing on the radio frequency signal and converts it into an intermediate frequency signal; the signal processing module 6 demodulates and filters the intermediate frequency signal to restore a clear image signal; finally, the display device 7 (such as a ground monitoring screen) receives and displays the image signal to realize the drone's simulated image transmission function.

[0032] It should be noted that the mixer 2 here is an integrated device with integrated characteristics, realizing the up-conversion function of the transmitting module and the down-conversion function of the receiving module, further solving the defects of multi-chip combination.

[0033] To facilitate a further understanding of the transceiver provided in the embodiments of this disclosure, the following will be combined with... Figure 2 The working principle diagram of the transceiver shown is explained in detail.

[0034] like Figure 2As shown, in the transmitting module, the analog camera 1 collects the signal as the analog input signal of the mixer 2, which is directly up-converted (the input signal with a certain frequency is converted into an output signal with a higher frequency) and then output to the front-end power amplifier (PA), and then transmitted by the transmitting antenna 4.

[0035] In practical applications, the bandwidth of the camera's acquired signal is kept within 10MHz. After frequency conversion by mixer 2 and amplification by PA, the antenna's transmitted spectrum centered on the carrier frequency occupies a bandwidth of ±5MHz. In contrast, the measured transmitted spectrum of traditional analog video transmission occupies nearly 20MHz, and its spectrum utilization efficiency is reduced by half compared to the embodiments disclosed in this disclosure.

[0036] In the receiving module, the receiving antenna 5 receives the signal as the RF input signal of the mixer 2, performs down-conversion, and outputs it to the signal processing module 6 for envelope detection and intermediate frequency filtering, and then inputs it to the display device 7.

[0037] As can be seen, the embodiments of this disclosure replace the traditional combination design of multiple discrete chips with an integrated architecture of "analog camera 1-mixer 2-power amplifier module 3-transmitting antenna 4" and "receiving antenna 5-mixer 2-signal processing module 6-display device 7", reducing the number of components and effectively solving the problems of complex structure and high cost of traditional systems. In addition, with a wide frequency band configuration range of 30MHz-5500MHz, the transmit and receive frequencies can be flexibly selected to avoid the drone flight remote control frequency band, solving the problem of mutual interference between analog image transmission and remote control signals in traditional systems, realizing that the two can work simultaneously, improving the continuity of drone operation, and thus significantly improving the practicality and reliability of drone analog image transmission.

[0038] Based on the transceiver provided in the above embodiments, this disclosure also provides a transmitter module and a receiver module for simulated image transmission of unmanned aerial vehicles (UAVs). The two modules will be described in detail below.

[0039] like Figure 3 The diagram shown is a schematic of the transmitter module provided in this embodiment of the present disclosure, which mainly includes an analog camera 1, a mixer 2, a power amplifier module 3, and a transmitting antenna 4, which sequentially realize signal transmission; wherein: The analog camera 1 is used to collect analog signals; The mixer 2 is used to perform up-conversion processing on the analog signal output by the analog camera 1. The power amplifier module 3 is used to amplify the up-converted radio frequency signal; The transmitting antenna 4 is used to transmit amplified radio frequency signals to the receiving module; The transmission frequency of the transmitter module is configured in the range of 30MHz-5500MHz in AM modulation mode.

[0040] The transmitter module here uses an integrated architecture with mixer 2 as its core, replacing the traditional multi-chip combination. This solves the problems of complex device structure, high cost, and reliance on imported chips, indirectly reducing power consumption and improving the drone's endurance. In addition, the wide frequency configuration can flexibly avoid the remote control frequency band, enabling simultaneous operation of analog image transmission and flight remote control.

[0041] In this embodiment, the signal spectrum transmitted by the transmitting module occupies a bandwidth of no more than ±5MHz centered on the carrier frequency. In contrast, the measured spectrum of traditional analog image transmission occupies close to ±10MHz. The spectrum utilization efficiency of this embodiment is improved by at least two times.

[0042] The power amplifier module 3 can be a front-end power amplifier used to amplify the radio frequency signal output by the mixer 2 to a preset transmit power.

[0043] The analog signal bandwidth acquired by the analog camera 1 is within 10MHz, thus ensuring the stability of the transmission spectrum.

[0044] Here, the transmission frequency of the transmitter module can be configured arbitrarily from 30MHz to 5500MHz in order to avoid frequency band interference between analog image transmission and flight remote control as much as possible.

[0045] Considering the crucial role of mixer 2 in the transmitter module provided in the embodiments of this disclosure, the following will be combined with Figure 4 The schematic diagram shown is described in detail.

[0046] like Figure 4 As shown, the mixer 2 here includes a local oscillator unit 21, a frequency conversion processing unit 22, and a filter unit 23; The local oscillator unit 21 is used to provide the local oscillator signal required for frequency conversion; The frequency conversion processing unit 22 is used to convert the frequency of the input signal to the target frequency band; The filtering unit 23 is used to perform preliminary filtering on the frequency-converted signal.

[0047] Through the sequential processing of the local oscillator unit 21, the frequency conversion processing unit 22, and the filtering unit 23, the up-conversion processing of analog signals can be achieved in the transmitting module.

[0048] like Figure 5The diagram shown is a schematic block diagram of the mixer 2 used in the embodiments of this disclosure. Through the processing of a loop filter, charge pump (CP), phase frequency detector (PFD), multi-modulus divider (MMD), and local divider (LO DIV), it supports the relevant processing of the transmitter module.

[0049] like Figure 6 The diagram shown is a schematic of a receiver module provided in an embodiment of this disclosure, mainly including a receiving antenna 5, a mixer 2, a signal processing module 6, and a display device 7 that sequentially realize signal transmission; wherein: The receiving antenna 5 is used to receive radio frequency signals transmitted by the transmitting module; The mixer 2 is used to perform down-conversion processing on the radio frequency signal; The signal processing module 6 is used to demodulate and filter the down-converted intermediate frequency signal; The display device 7 is used to display images based on the processed signals; The receiving frequency of the receiving module is configured in the range of 30MHz-5500MHz in AM modulation mode.

[0050] The receiver module here uses an integrated architecture with mixer 2 as its core, replacing the traditional multi-chip combination. This solves the problems of complex device structure, high cost, and reliance on imported chips, indirectly reducing power consumption and improving the drone's endurance. In addition, the wide frequency configuration can flexibly avoid the remote control frequency band, enabling simultaneous operation of analog image transmission and flight remote control.

[0051] The receiving frequency of the receiver module can be configured arbitrarily from 30MHz to 5500MHz. Furthermore, the frequency deviation from the transmitting oscillator (LO) (i.e., the intermediate frequency of the receiver module) can also be freely selected within a certain range to minimize frequency band interference. In addition, the receiver module can also perform down-conversion processing for radio frequency signals, further enhancing its integration level.

[0052] The display device 7 is an analog display device, such as a ground monitoring screen, used to receive signals processed by the signal processing module 6 and display images. The displayed images have high clarity and robustness.

[0053] like Figure 7 The diagram shown is a schematic of the signal processing module 6 in the receiver module. This signal processing module 6 includes an envelope detection unit 61 and an intermediate frequency filtering unit 62; wherein: The envelope detection unit 61 includes a diode detection circuit for detecting the boundary curve of the signal envelope amplitude changing over time in order to achieve signal demodulation. The intermediate frequency filtering unit 62 is used to filter out the residual intermediate frequency signal after down-conversion.

[0054] In practical applications, mixer 2 first shifts the received signal to an intermediate frequency (IF), then performs envelope detection via a diode detection circuit, and relies on an IF filter to remove residual IF signals. Compared to existing technologies that use multiple transceiver chips, resulting in significant interference and high power consumption, this disclosed embodiment, as a complete transceiver architecture, differs from the zero-IF receiving architecture. This architecture not only solves the aforementioned technical problems but also avoids changes in received signal strength caused by the phase difference between transmission and reception.

[0055] Mixer 2 in the receiver module can use the same components as mixer 2 in the transmitter module; see reference for details. Figure 4 and Figure 5 The implementation is shown in the diagram, and will not be elaborated further here.

[0056] Based on the aforementioned transmitter and receiver modules, this embodiment of the present disclosure implements a transceiver for simulated image transmission of unmanned aerial vehicles (UAVs). While reducing overall power consumption, it also achieves higher integration, lower cost, and higher spectrum utilization efficiency. Furthermore, this embodiment of the present disclosure can completely resolve the mutual interference between simulated image transmission and remote control.

[0057] Based on the transceiver for simulated image transmission of a UAV provided in the above embodiments, a method for simulated image transmission of a UAV is also provided here, the method comprising the following steps: Transmitter module processing steps: The analog camera collects the analog signal, which is then up-converted by the mixer and transmitted through the power amplifier and antenna in sequence; Receiver module processing steps: The receiving antenna receives the signal, which is then down-converted by the mixer, demodulated and filtered in sequence, and then transmitted to the display device for display. The transmit and receive frequencies are configured within the range of 30MHz-5500MHz in AM modulation mode.

[0058] For details on the processing steps of the transmitting module and the receiving module, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.

[0059] In the description of this specification, references to terms such as "some possible implementations," "some implementations," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that implementation or example is included in at least one implementation or example of this disclosure, and the aforementioned terms do not necessarily refer to the same implementation or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more implementations or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different implementations or examples described in this specification, as well as the features of different implementations or examples.

[0060] Regarding the method flowcharts of embodiments of this disclosure, certain operations are described as different steps performed in a certain order. Such flowcharts are illustrative and not restrictive. Some steps described herein may be grouped together and performed in a single operation, or some steps may be divided into multiple sub-steps, and some steps may be performed in an order different from that shown herein. The various steps shown in the flowcharts may be implemented in any way by any circuit structure and / or tangible mechanism (e.g., software running on a computer device, hardware (e.g., logic functions implemented by a processor or chip), and / or any combination thereof).

[0061] Those skilled in the art will understand that in the methods described in the above specific embodiments, the order in which the steps are written does not imply a strict execution order, and the specific execution order of each step should be determined by its function and possible internal logic.

[0062] The systems and methods provided in this disclosure correspond one-to-one. Therefore, the methods also have similar beneficial technical effects as their corresponding systems. Since the beneficial technical effects of the systems have been described in detail above, the beneficial technical effects of the methods will not be repeated here.

[0063] Those skilled in the art will understand that embodiments of this disclosure can be implemented as methods and apparatus (devices or systems), or as computer-readable storage media. Therefore, this disclosure can be implemented entirely in hardware, entirely in software, or in a combination of software and hardware. Furthermore, this disclosure can be implemented as a computer-readable storage medium on one or more computer-readable storage media containing computer-usable program code (including, but not limited to, disk storage, read-only optical disc storage (CD-ROM), optical storage, etc.).

[0064] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (devices or systems), and computer-readable storage media according to embodiments of this disclosure. It should 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 program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to create 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 specified in one or more blocks of the flowchart illustrations and / or block diagrams.

[0065] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article including instruction means, wherein the instruction means implement the functions specified in one or more flowcharts and / or one or more blocks in a block diagram.

[0066] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more blocks in the block diagram.

[0067] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0068] Memory can include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0069] Computer-readable media include permanent and non-permanent, removable and non-removable media, which can store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer-readable storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory, read-only memory, electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device. Furthermore, although the operations of the methods of this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all of the operations shown must be performed to achieve the desired result. Additionally, certain steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple sub-steps.

[0070] While the spirit and principles of this disclosure have been described above with reference to several specific embodiments, it should be understood that this disclosure is not limited to the disclosed specific embodiments, and the division of aspects does not imply that features in these aspects cannot be combined. This disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A transmitter module for simulated image transmission in unmanned aerial vehicles, characterized in that, It includes an analog camera, a mixer, a power amplifier module, and a transmitting antenna, which sequentially transmit signals. The simulated camera is used to acquire simulated image signals; The mixer is used to upconvert the analog signal output by the analog camera. The power amplifier module is used to amplify the up-converted radio frequency signal; The transmitting antenna is used to transmit amplified radio frequency signals to the receiving module; The transmission frequency of the transmitter module is configured in the range of 30MHz-5500MHz in AM modulation mode.

2. The transmitter module according to claim 1, characterized in that, The signal spectrum emitted by the transmitting module occupies a bandwidth of no more than ±5MHz centered on the carrier frequency.

3. The transmitter module according to claim 1, characterized in that, The mixer includes a local oscillator unit, a frequency conversion processing unit, and a filtering unit; The local oscillator unit is used to provide the local oscillator signal required for frequency conversion; The frequency conversion processing unit is used to convert the frequency of the input signal to the target frequency band; The filtering unit is used to perform preliminary filtering on the frequency-converted signal.

4. The transmitter module according to claim 1, characterized in that, The power amplification module is a front-end power amplifier used to amplify the radio frequency signal output by the mixer to a preset transmission power.

5. The transmitter module according to claim 1, characterized in that, The analog signal bandwidth acquired by the analog camera is within 10MHz.

6. A receiver module for simulated image transmission in unmanned aerial vehicles, characterized in that: It includes a receiving antenna, a mixer, a signal processing module, and a display device, which sequentially transmit signals. The receiving antenna is used to receive radio frequency signals transmitted by the transmitting module; The mixer is used to perform down-conversion processing on the radio frequency signal; The signal processing module is used to demodulate and filter the down-converted intermediate frequency signal; The display device is used to display images based on the processed signals; The receiving frequency of the receiving module is configured in the range of 30MHz-5500MHz in AM modulation mode.

7. The receiving module according to claim 6, characterized in that, The signal processing module includes an envelope detection unit and an intermediate frequency filtering unit; The envelope detection unit includes a diode detection circuit, which is used to detect the boundary curve of the signal envelope amplitude changing over time in order to achieve signal demodulation. The intermediate frequency filtering unit is used to filter out the residual intermediate frequency signal after down-conversion.

8. The receiving module according to claim 6, characterized in that, The display device is an analog display device, used to receive signals processed by the signal processing module and display images.

9. A transceiver for simulated image transmission in unmanned aerial vehicles, characterized in that, Includes a transmitter module and a receiver module; The transmitter module includes an analog camera, a mixer, a power amplifier module, and a transmitting antenna, which sequentially realize signal transmission. The mixer is used to upconvert the analog signal output by the analog camera. The power amplifier module is used to amplify the upconverted radio frequency signal and transmit the amplified radio frequency signal outward through the transmitting antenna. The receiving module includes a receiving antenna, a mixer, a signal processing module, and a display device that sequentially transmit signals. The mixer is used to down-convert the radio frequency signal acquired by the receiving antenna. The signal processing module is used to demodulate and filter the down-converted intermediate frequency signal and display the image through the display device. The transmit and receive frequencies of the transmitting module and the receiving module are configured within the range of 30MHz-5500MHz in AM modulation mode.

10. The transceiver according to claim 9, characterized in that, The mixer is an integrated device that performs up-conversion for the transmitting module and down-conversion for the receiving module.

11. A method for simulating image transmission in unmanned aerial vehicles, characterized in that, Applied to the transceiver of claim 9 or 10, the method includes: Transmitter module processing steps: The analog camera collects the analog signal, which is then up-converted by the mixer and transmitted through the power amplifier and antenna in sequence; Receiver module processing steps: The receiving antenna receives the signal, which is then down-converted by the mixer, demodulated and filtered in sequence, and then transmitted to the display device for display. The transmit and receive frequencies are configured within the range of 30MHz-5500MHz in AM modulation mode.

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