CN209964036U - Multi-band radio frequency detection forwarding equipment based on unmanned aerial vehicle unattended platform - Google Patents
Multi-band radio frequency detection forwarding equipment based on unmanned aerial vehicle unattended platform Download PDFInfo
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Abstract
The utility model provides a multi-band radio frequency detection and forwarding device based on unmanned aerial vehicle unattended platform, which is characterized in that the device comprises a miniaturized omnidirectional receiving antenna device for detecting 0.1 GHz-6 GHz full-band radio frequency signals; the radio frequency conditioning module is used for carrying out radio frequency conditioning on the 0.1 GHz-6 GHz full-frequency-band radio frequency signal; the up-conversion module is used for carrying out frequency spectrum shifting on the 0.1 GHz-6 GHz full-frequency-band radio-frequency signal; the constant power amplification module is used for amplifying the power of the radio frequency signal and realizing constant power output in any state; a miniaturized directional transmitting antenna device for transmitting power signals; and the control circuit is used for carrying out real-time remote control response on the equipment. The utility model provides a conventional unmanned aerial vehicle radio frequency load equipment listen the frequency channel single, the range is short, the poor shortcoming of anti-electromagnetic interference ability, satisfied the requirement of unmanned aerial vehicle platform to wireless radio frequency load equipment's high reliability, small, light weight, big bandwidth, high performance.
Description
Technical Field
The utility model relates to an unmanned aerial vehicle technique and the radio frequency microwave technical field that cruises especially relate to a equipment is listened and is forwardded to multifrequency section radio frequency based on unmanned on duty platform of unmanned aerial vehicle.
Background
The unmanned aerial vehicle as a novel aerial monitoring tool carrier is widely applied to civil fields such as image recording, rescue and emergency rescue, public safety and the like, and creates great economic value. As a convenient and fast carrier without the influence of landform and environmental restrictions, in recent years, unmanned aerial vehicle platforms are beginning to be applied in the radio frequency microwave field of military/civil data transmission, image mapping, frequency spectrum detection, monitoring and even the forefront military electronic warfare and the like, and have wide application prospects. As the most core component for realizing the above functions, the rf detection and transmission device is rapidly developed from a traditional large platform to a miniaturized and lightweight platform.
However, limited to the limited load capacity and space of the unmanned aerial vehicle platform, the conventional radio frequency load equipment applied to the unmanned aerial vehicle platform has certain functional drawbacks, which are mainly reflected in that:
1. the unmanned aerial vehicle platform has limited load space and small load capacity, conventional unmanned aerial vehicle radio frequency load equipment cannot meet sufficient miniaturization requirements, and the load space is usually compromised at the cost of performance sacrifice, so that the equipment function is generally simpler;
2. the unmanned aerial vehicle platform generally adopts rechargeable battery or miniwatt generator to obtain the power, and it can provide mains power limited, consequently has strict restriction to load equipment power consumption. The conventional unmanned aerial vehicle radio frequency load equipment has low transmitting power amplification efficiency, small equipment transmitting power and short working radius;
3. the conventional unmanned aerial vehicle radio frequency load equipment can only meet the radio frequency communication function of a single frequency band or a specific frequency point and cannot meet the requirement of multi-frequency band cooperative work;
4. conventional unmanned aerial vehicle radio frequency load equipment is easily influenced by electromagnetic environment interference, and electromagnetic compatibility faults such as unstable working state, data distortion and even equipment non-operation easily occur under the complex electromagnetic environment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's is not enough, provides a forwarding equipment is listened to multifrequency section radio frequency based on unmanned aerial vehicle unmanned on duty platform, has satisfied the requirement of high reliability, small, light weight, broad band, high performance of unmanned aerial vehicle radio frequency detection equipment for the platform, has solved unmanned aerial vehicle radio frequency load equipment and has listened the problem that the frequency channel is single, the range is short, electromagnetism interference killing feature is poor.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a equipment is forwardded in multifrequency section radio frequency based on unmanned on duty platform of unmanned aerial vehicle, includes, equipment shell, its characterized in that is equipped with in the equipment shell: the radio frequency signal processing device comprises a radio frequency conditioning module for performing radio frequency conditioning on 0.1 GHz-6 GHz full-band radio frequency signals, an up-conversion module for performing frequency spectrum shifting on the 0.1 GHz-6 GHz full-band radio frequency signals, a constant power amplification module for performing power amplification on the radio frequency signals and realizing constant power output in any state, a miniaturized directional transmitting antenna device for transmitting the power signals and a control circuit for performing real-time remote control response on equipment; the lower surface of the equipment shell is provided with a miniaturized omnidirectional receiving antenna device for detecting 0.1 GHz-6 GHz full-band radio-frequency signals and a miniaturized directional transmitting antenna device for transmitting power signals; the miniaturized omnidirectional receiving antenna device, the radio frequency conditioning module, the up-conversion module, the constant power amplification module and the miniaturized directional transmitting antenna device are connected in series in a blind-mating mode through the radio frequency SMP and are all electrically connected with the control circuit; the miniaturized omnidirectional receiving antenna device is provided with three omnidirectional receiving antennas, namely an A omnidirectional receiving antenna for detecting a V frequency band signal, a B omnidirectional receiving antenna for detecting a U frequency band signal and a C omnidirectional receiving antenna for detecting an S, C frequency band signal; the miniaturized omnidirectional receiving antenna device transmits a received 0.1 GHz-6 GHz radio frequency signal to the radio frequency conditioning module, the radio frequency conditioning module conditions the amplitude of the 0.1 GHz-6 GHz radio frequency signal within a dynamic range of up to 50dB and transmits the conditioned signal to the up-conversion module, the up-conversion module changes the 0.1 GHz-6 GHz radio frequency signal into a Ku frequency band and transmits the Ku frequency band to the constant power amplification module, the constant power amplification module transmits the Ku frequency band radio frequency signal to the miniaturized directional transmitting antenna device after performing power amplification on the Ku frequency band radio frequency signal, and the miniaturized directional transmitting antenna device transmits the amplified Ku frequency band radio frequency signal in high gain.
Further, miniaturized omnidirectional receiving antenna device and miniaturized directional transmitting antenna device all adopt firm, light and handy and corrosion-resistant material preparation to form and with equipment casing integrated design, equipment casing installs in unmanned aerial vehicle ventral bottom.
Further, the A omnidirectional receiving antenna receives signals of 0.1 GHz-0.8 GHz in a high-gain mode; the B omnidirectional receiving antenna carries out high-gain receiving on the signals of 0.8 GHz-2 GHz; and the C omnidirectional receiving antenna receives signals of 2 GHz-6 GHz in a high-gain mode.
Furthermore, the A omnidirectional receiving antenna, the B omnidirectional receiving antenna and the C omnidirectional receiving antenna all adopt an ultra wide band printing monopole microstrip plane antenna form to realize the antenna circuit function, and realize broadband matching through an arc slot technology.
Furthermore, the radio frequency conditioning module is provided with three channels working at different frequency bands and respectively processing 0.1 GHz-0.8 GHz signals, 0.8 GHz-2 GHz signals and 2 GHz-6 GHz signals, the channels of the three frequency bands respectively comprise an amplitude limiting protection circuit, a low noise amplifier circuit, a preselection filter circuit and a gain control circuit, and the output ends of the three frequency bands are connected with a three-out-of-one switch.
Furthermore, the amplitude limiting protection circuit protects the received radio frequency signal, performs low noise amplification through a low noise discharge circuit, filters an external interference signal through a preselection filter circuit, performs further gain amplification on the radio frequency signal through a gain control circuit, and finally selects and outputs through a one-out-of-three switch.
Furthermore, the up-conversion module comprises a frequency mixer, a frequency source circuit and a high-rectangle-degree radio frequency filter, wherein the frequency source circuit provides a required adjustable local oscillator for the frequency mixer, the frequency mixer changes a received radio frequency signal in a frequency range of 0.1-6 GHz into a relatively pure radio frequency signal in a Ku frequency range by using the adjustable local oscillator provided by the frequency source circuit, and then the radio frequency signal in the Ku frequency range is transmitted to the constant-power amplification module after being filtered by the high-rectangle-degree radio frequency filter to remove stray signals generated by frequency mixing.
Further, the constant power amplification module comprises a radio frequency AGC circuit, a GaN power amplifier circuit and a detection circuit; the GaN power amplifier circuit amplifies the power of a received Ku frequency band radio frequency signal and then transmits the Ku frequency band radio frequency signal to the detection circuit, the detection circuit detects the real-time power of the Ku frequency band radio frequency signal after power amplification and feeds back a detection result to the control circuit, and the control circuit performs gain adjustment on the radio frequency AGC circuit according to the detection result so as to ensure that the output power is constant when frequency conversion signals in any power range are input.
Further, the miniaturized directional transmitting antenna device carries out high-gain transmission on the received Ku frequency band radio frequency signals and is responsible for radiating the radio frequency signals after power amplification to the air, and the radius of a working space domain of the miniaturized directional transmitting antenna device can cover 5-10 Km.
Furthermore, the miniaturized directional transmitting antenna device adopts a rectangular patch microstrip planar antenna form to realize the function of an antenna circuit.
Furthermore, the control circuit is a programmable logic circuit based on an ARM core framework, and in the task execution process of the unmanned aerial vehicle, an operator can remotely control the unmanned aerial vehicle without watching personnel.
Further, each module in the equipment shell can be arranged flexibly, so that each functional module can be independently disassembled and assembled, and good maintainability and upgradability of later functions are achieved.
Further, the overall size of the equipment shell is (250-260) mmX (190-200) mmX (45-55) mm, and the volume of the equipment shell is 35% -45% of that of conventional equipment; the weight is less than 1.5Kg, which is 25% -30% of the conventional equipment, the requirements of light weight and small size of the unmanned aerial vehicle load equipment are met, and the effective load of the unmanned aerial vehicle is greatly improved.
The beneficial effect of adopting above technical scheme is:
1) design miniaturized omnidirectional receiving antenna device and miniaturized directional transmitting antenna device through adopting the planar antenna form, and through ingenious structural design with antenna and equipment casing integrated design, need not extra feeder and install in unmanned aerial vehicle ventral bottom, do not occupy unmanned aerial vehicle internal load space, greatly improved load space utilization, thereby thoroughly solved in the past the drawback that low band antenna occupies a large amount of unmanned aerial vehicle load space, realized unmanned aerial vehicle load equipment light in weight, small-size requirement.
2) The functions of wide-band automatic detection and remote radio frequency signal forwarding are realized by adopting a large dynamic radio frequency conditioning module and a large dynamic closed-loop power control circuit;
3) by adopting the advanced GaN power amplification technology, the emission efficiency of the equipment can be improved to 38%, the power consumption is reduced by 30% compared with the conventional equipment under the condition of the same action distance, and the equipment has the functions of overvoltage protection, overcurrent protection, standing wave protection, temperature protection and the like;
4) wireless remote control is realized, and personnel on duty is not needed during working;
5) the miniaturized omnidirectional receiving antenna device covers 0.1 GHz-6 GHz full-band radio frequency signals, can detect signals in a working radius airspace and the ground, expands working bandwidth and meets the requirements of most wireless communication frequencies; the maximum transmitting power of the power amplifier is 10W, the miniaturized directional transmitting antenna device radiates radio-frequency signals after power amplification to the air, and the maximum combat radius can reach 5-10 Km.
6) The whole equipment adopts the scalable modular design, the volume and the weight are reduced by 40% -60% compared with the conventional equipment, and meanwhile, the working frequency can be further expanded to higher frequency and larger bandwidth through upgrading the antenna and software in the future.
Drawings
Fig. 1 is the utility model discloses in based on unmanned aerial vehicle unmanned on duty platform's multiband radio frequency detection forwarding apparatus's side view.
Fig. 2 is the utility model discloses in based on unmanned aerial vehicle unmanned on duty platform's multifrequency section radio frequency listens and forwards the plan view of equipment.
Fig. 3 is a schematic diagram of a rf conditioning module.
Fig. 4 is a schematic diagram of an up-conversion module.
In the figure: the device comprises a 1-A omnidirectional receiving antenna, a 2-B omnidirectional receiving antenna, a 3-C omnidirectional receiving antenna, a 4-miniaturized directional transmitting antenna device, a 5-equipment shell, a 6-radio frequency conditioning module, a 7-up-conversion module, an 8-control circuit and a 9-constant power amplification module.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1-4:
in this embodiment, a multifrequency section radio frequency is listened and is retransmitted equipment based on unmanned on duty platform of unmanned aerial vehicle, includes, equipment casing 5, be equipped with in the equipment casing 5: the radio frequency signal processing device comprises a radio frequency conditioning module 6 for performing radio frequency conditioning on 0.1 GHz-6 GHz full-band radio frequency signals, an up-conversion module 7 for performing frequency spectrum shifting on the 0.1 GHz-6 GHz full-band radio frequency signals, a constant power amplification module 9 for performing power amplification on the radio frequency signals and realizing constant power output in any state, a miniaturized directional transmitting antenna device 4 for transmitting the power signals and a control circuit 8 for performing real-time remote control response on equipment;
each module in the equipment casing 5 in this embodiment can arrange in a flexible way for each functional module can carry out independent dismouting, has possessed the upgradability of good maintainability and later stage function.
The lower surface of the device shell 5 in this embodiment is further provided with a miniaturized omnidirectional receiving antenna device for detecting 0.1 GHz-6 GHz full-band radio frequency signals and a miniaturized directional transmitting antenna device 4 for transmitting power signals; the miniaturized omnidirectional receiving antenna device and the miniaturized directional transmitting antenna device 4 are both made of firm, light and corrosion-resistant materials and are designed integrally with the equipment shell 5.
The overall size of the equipment shell 5 in the embodiment is (250-260) mmX (190-200) mmX (45-55) mm, and the volume is 35% -45% of that of the conventional equipment; weight is less than 1.5Kg, is 25% -30% of conventional equipment, has realized the requirement that unmanned aerial vehicle load equipment light in weight, small-size, and equipment casing 5 is installed in unmanned aerial vehicle ventral bottom, has greatly improved unmanned aerial vehicle's payload.
The miniaturized omnidirectional receiving antenna device, the radio frequency conditioning module 6, the up-conversion module 7, the constant power amplification module 9 and the miniaturized directional transmitting antenna device 4 in the embodiment are connected in series through radio frequency SMP blind mating in sequence and are all electrically connected with the control circuit 8.
The miniaturized omnidirectional receiving antenna device in the embodiment is provided with three omnidirectional receiving antennas, namely an omnidirectional receiving antenna A1, an omnidirectional receiving antenna B2 and an omnidirectional receiving antenna C3, and the antenna circuit functions are realized by adopting an ultra-wideband printed monopole microstrip plane antenna form; the A omnidirectional receiving antenna 1 detects the V frequency band signal and is used for receiving the 0.1 GHz-0.8 GHz signal in a high-gain mode; the B omnidirectional receiving antenna 2 detects the U frequency band signal and is used for receiving the 0.8 GHz-2 GHz signal in a high gain mode; the C omnidirectional receiving antenna 3 detects S, C frequency band signals and is used for receiving 2 GHz-6 GHz signals in a high-gain mode.
The radio frequency conditioning module 6 in this embodiment is provided with three channels working in different frequency bands and respectively processing 0.1 GHz-0.8 GHz signals, 0.8 GHz-2 GHz signals and 2 GHz-6 GHz signals, the channels of the three frequency bands all include an amplitude limiting protection circuit, a low noise amplifier circuit, a preselection filter circuit and a gain control circuit, and output ends of the three frequency bands are all connected with a three-out-of-one switch.
The amplitude limiting protection circuit in the embodiment protects the received radio frequency signal, performs low noise amplification through the low noise discharge circuit, filters an external interference signal through the preselection filter circuit, further performs gain amplification on the radio frequency signal through the gain control circuit, and finally performs selective output through the three-out-of-one switch, wherein the three-out-of-one switch can select three antenna signals, so that full-band coverage of 0.1 GHz-6 GHz signals is realized.
The amplitude limiting protection circuit in the embodiment regulates and protects the received radio frequency signal by the amplitude up to 50dB dynamic range, so as to avoid burning the circuit or causing circuit blockage when an out-of-band interference signal is too large; the low-noise amplifier circuit minimizes the noise deterioration of the received radio-frequency signal, and improves the receiving sensitivity of the whole equipment; the pre-selection filter circuit performs frequency selection on the radio frequency signal to filter out-of-band interference signals and ensure the purity of a received signal frequency spectrum.
The radio frequency conditioning module 6 in this embodiment is the most core component in the device of the present invention, and through the application of the broadband high power amplitude limiting technology, the broadband low noise amplification technology and the high rectangle degree radio frequency filtering technology, the whole device can perform better detection capability on signals with power as low as-110 dBm, and has strong anti-interference capability, and can be applied in strong interference and complex electromagnetic environments. Compared with the traditional equipment, the detection distance, the detection frequency band and the available working environment are qualitatively improved.
In this embodiment, the up-conversion module 7 includes a frequency mixer, a frequency source circuit and a high-squareness rf filter, the frequency source circuit provides a required adjustable local oscillator for the frequency mixer, the frequency mixer uses the adjustable local oscillator provided by the frequency source circuit to change a received 0.1-6 GHz band rf signal into a relatively pure Ku band rf signal, and then the Ku band rf signal is transmitted to the constant-power amplification module 9 after being filtered by the high-squareness rf filter to remove a stray signal generated by frequency mixing.
In this embodiment, the 0.1 to 6GHz band rf signal received by the input end of the up-conversion module 7 is shifted to the Ku band signal with a relatively pure frequency spectrum by the local oscillator through the frequency mixer, so that the influence of electromagnetic interference in the environment can be reduced, and the anti-interference capability of the signal can be further improved, thereby ensuring the purity of the rf signal frequency spectrum, fundamentally solving the problem of multipath signal possibly generated during real-time transceiving operation, and solving the problem of electromagnetic compatibility that conventional equipment cannot be broken away during wide band operation.
The constant power amplification module 9 in this embodiment includes a radio frequency AGC circuit, a GaN power amplifier circuit, and a detection circuit; the GaN power amplifier circuit amplifies the power of a received Ku frequency band radio frequency signal and then transmits the Ku frequency band radio frequency signal to the detection circuit, the detection circuit detects the real-time power of the Ku frequency band radio frequency signal after power amplification and feeds back a detection result to the control circuit 8, and the control circuit 8 performs gain adjustment on the radio frequency AGC circuit according to the detection result so as to ensure that the input output power of a variable frequency signal in any power range is constant.
The amplification power of the GaN power amplifier circuit in the embodiment can be increased by 38%, the constant power of 10W output of the received signal can be kept in the range of-105 dBm to-55 dBm, and no additional manual control is needed; the radio frequency AGC circuit performs up to 30dB gain control on a radio frequency signal.
All circuit processes in the constant power amplification module 9 in the embodiment are closed-loop control, extra manual instruction control is not needed, the problem that power needs to be manually adjusted after an operator judges actual conditions when conventional equipment is used is solved, and the unattended operation function of radio frequency equipment during working is realized.
The miniaturized directional transmitting antenna device 4 in the embodiment performs high-gain transmission on the received Ku frequency band radio frequency signal, is responsible for radiating the radio frequency signal after power amplification to the air, and the radius of a working space domain of the miniaturized directional transmitting antenna device can cover 5-10 Km; the miniaturized directional transmitting antenna device 4 adopts a rectangular patch microstrip planar antenna form to realize the function of an antenna circuit, and effectively improves the gain of the antenna in a Ku frequency band by carrying out corner cut optimization and metal ridge optimization on the traditional planar antenna, so that the transmitting efficiency is further improved.
In this embodiment, the control circuit 8 is a programmable logic circuit based on an ARM core framework, and in the task execution process of the unmanned aerial vehicle, an operator can remotely control the unmanned aerial vehicle without a person on duty.
Example two
By integrating the content described in the first embodiment, the miniaturized omnidirectional receiving antenna device in this embodiment transmits the received 0.1GHz to 6GHz radio frequency signal to the radio frequency conditioning module 6, the radio frequency conditioning module 6 performs amplitude conditioning on the 0.1GHz to 6GHz radio frequency signal up to a dynamic range of 50dB, and transmits the conditioned signal to the up-conversion module 7, the up-conversion module 7 changes the 0.1GHz to 6GHz radio frequency signal into a Ku frequency band and transmits the Ku frequency band to the constant power amplification module 9, the constant power amplification module 9 performs power amplification on the Ku frequency band radio frequency signal and transmits the Ku frequency band radio frequency signal to the miniaturized directional transmitting antenna device 4, and the miniaturized directional transmitting antenna device 4 performs high-gain transmission on the amplified Ku frequency band radio frequency signal.
What just go up is the preferred embodiment of the utility model discloses a protection scope does not only confine the above-mentioned embodiment, and the all belong to the technical scheme under the novel thinking all belongs to the utility model discloses a protection scope should point out, to the ordinary skilled person in this field, is not deviating from the utility model discloses under the prerequisite of creating the design, can also make a plurality of deformations and improvements, these all belong to the utility model discloses a protection scope.
Claims (9)
1. The utility model provides a equipment is forwardded in multifrequency section radio frequency based on unmanned on duty platform of unmanned aerial vehicle, includes, equipment casing (5), its characterized in that is equipped with in equipment casing (5): the radio frequency signal transmission device comprises a radio frequency conditioning module (6) for performing radio frequency conditioning on 0.1 GHz-6 GHz full-band radio frequency signals, an up-conversion module (7) for performing frequency spectrum shifting on the 0.1 GHz-6 GHz full-band radio frequency signals, a constant power amplification module (9) for performing power amplification on the radio frequency signals and realizing constant power output in any state, a miniaturized directional transmitting antenna device (4) for transmitting the power signals and a control circuit (8) for performing real-time remote control response on equipment;
the lower surface of the equipment shell (5) is provided with a miniaturized omnidirectional receiving antenna device for detecting 0.1 GHz-6 GHz full-band radio-frequency signals and a miniaturized directional transmitting antenna device (4) for transmitting power signals;
the miniaturized omnidirectional receiving antenna device, the radio frequency conditioning module (6), the up-conversion module (7), the constant power amplification module (9) and the miniaturized directional transmitting antenna device (4) are connected in series in a blind-mating mode through the radio frequency SMP and are all electrically connected with the control circuit (8);
the miniaturized omnidirectional receiving antenna device is provided with three omnidirectional receiving antennas, namely an A omnidirectional receiving antenna (1) for detecting a V frequency band signal, a B omnidirectional receiving antenna (2) for detecting a U frequency band signal and a C omnidirectional receiving antenna (3) for detecting an S, C frequency band signal;
the miniaturized omnidirectional receiving antenna device transmits received 0.1 GHz-6 GHz radio frequency signals to the radio frequency conditioning module (6), the radio frequency conditioning module (6) conditions the amplitude of the 0.1 GHz-6 GHz radio frequency signals up to a dynamic range of 50dB and transmits the amplitude to the up-conversion module (7), the up-conversion module (7) changes the 0.1 GHz-6 GHz radio frequency signals into a Ku frequency band and transmits the Ku frequency band to the constant power amplification module (9), the constant power amplification module (9) amplifies the power of the Ku frequency band radio frequency signals and transmits the Ku frequency band radio frequency signals to the miniaturized directional transmitting antenna device (4), and the miniaturized directional transmitting antenna device (4) transmits the amplified Ku frequency band radio frequency signals in high gain.
2. The multiband radio frequency detection and forwarding equipment based on unmanned aerial vehicle unmanned platform of claim 1, wherein the miniaturized omnidirectional receiving antenna device and the miniaturized directional transmitting antenna device (4) are designed integrally with an equipment housing (5), and the equipment housing (5) is installed at the bottom of the belly of the unmanned aerial vehicle.
3. The multiband radio frequency detection and forwarding device based on unmanned aerial vehicle unattended platform according to claim 1, wherein the A omnidirectional receiving antenna (1) receives high gain signals from 0.1GHz to 0.8 GHz; the B omnidirectional receiving antenna (2) receives signals of 0.8 GHz-2 GHz in a high gain mode; and the C omnidirectional receiving antenna (3) receives signals of 2 GHz-6 GHz in a high-gain mode.
4. The multiband radio frequency detection and forwarding equipment based on the unmanned aerial vehicle unattended platform according to claim 1, wherein the A omnidirectional receiving antenna (1), the B omnidirectional receiving antenna (2) and the C omnidirectional receiving antenna (3) all adopt an ultra wide band printed monopole microstrip plane antenna form to realize an antenna circuit function, and broadband matching is realized through an arc slot technology.
5. The multiband radio frequency detection and forwarding device based on the unmanned aerial vehicle unattended platform according to claim 1, wherein the radio frequency conditioning module (6) is provided with three channels working in different frequency bands and respectively processing 0.1 GHz-0.8 GHz signals, 0.8 GHz-2 GHz signals and 2 GHz-6 GHz signals, the channels of the three frequency bands respectively comprise a limiting protection circuit, a low noise amplifier circuit, a pre-selection filter circuit and a gain control circuit, and output ends of the three frequency bands are connected with a three-out-of-one switch;
the amplitude limiting protection circuit protects the received radio frequency signal, performs low noise amplification through a low noise discharge circuit, filters an external interference signal through a preselection filter circuit, performs further gain amplification on the radio frequency signal through a gain control circuit, and finally selects and outputs through a one-out-of-three switch.
6. The multiband radio frequency detection and forwarding equipment based on unmanned aerial vehicle unattended platform according to claim 1, wherein the up-conversion module (7) comprises a mixer, a frequency source circuit and a high-rectangle-degree radio frequency filter, the frequency source circuit provides a required adjustable local oscillator for the mixer, the mixer uses the adjustable local oscillator provided by the frequency source circuit to change the received radio frequency signal in 0.1-6 GHz frequency band into a pure Ku frequency band radio frequency signal, and then the Ku frequency band radio frequency signal is transmitted to the constant-power amplification module (9) after being filtered by the high-rectangle-degree radio frequency filter to remove stray signals generated by mixing.
7. The multiband radio frequency detection and forwarding equipment based on unmanned aerial vehicle unmanned platform of claim 1, wherein the constant power amplification module (9) comprises a radio frequency AGC circuit, a GaN power amplifier circuit and a detection circuit; the GaN power amplifier circuit amplifies the power of a received Ku frequency band radio frequency signal and then transmits the Ku frequency band radio frequency signal to the detection circuit, the detection circuit detects the real-time power of the Ku frequency band radio frequency signal after power amplification and feeds back a detection result to the control circuit (8), and the control circuit (8) performs gain adjustment on the radio frequency AGC circuit according to the detection result so as to ensure that the output power is constant when a variable frequency signal in any power range is input.
8. The multiband radio frequency detection and forwarding equipment based on the unmanned aerial vehicle unattended platform is characterized in that the miniaturized directional transmitting antenna device (4) performs high-gain transmission on a received Ku frequency band radio frequency signal and is responsible for radiating the radio frequency signal after power amplification to the air, and the radius of a working airspace of the equipment can cover 5-10 Km; the miniaturized directional transmitting antenna device (4) adopts a rectangular patch microstrip plane antenna form to realize the function of an antenna circuit.
9. The multiband radio frequency detection and forwarding device based on unmanned aerial vehicle unmanned platform of claim 1, wherein the control circuit (8) is a programmable logic circuit based on ARM core architecture.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311691A (en) * | 2019-06-24 | 2019-10-08 | 浙江嘉科电子有限公司 | A kind of multi-frequency band radio-frequency detecting forwarding device based on the unattended platform of unmanned plane |
| CN111313143A (en) * | 2020-03-27 | 2020-06-19 | 中交遥感天域科技江苏有限公司 | Control system layout structure of multi-frequency omnidirectional unmanned aerial vehicle control equipment |
| CN111431555A (en) * | 2020-03-30 | 2020-07-17 | 中国电子科技集团公司第三十六研究所 | Method for receiving radio frequency forwarding between mobile forwarding station and ground station |
-
2019
- 2019-06-24 CN CN201920953188.XU patent/CN209964036U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311691A (en) * | 2019-06-24 | 2019-10-08 | 浙江嘉科电子有限公司 | A kind of multi-frequency band radio-frequency detecting forwarding device based on the unattended platform of unmanned plane |
| CN110311691B (en) * | 2019-06-24 | 2024-02-06 | 浙江嘉科电子有限公司 | Multi-band radio frequency detection forwarding equipment based on unmanned aerial vehicle unmanned on duty platform |
| CN111313143A (en) * | 2020-03-27 | 2020-06-19 | 中交遥感天域科技江苏有限公司 | Control system layout structure of multi-frequency omnidirectional unmanned aerial vehicle control equipment |
| CN111313143B (en) * | 2020-03-27 | 2024-02-13 | 中交遥感天域科技江苏有限公司 | Control system layout structure of multi-frequency omnidirectional unmanned aerial vehicle control equipment |
| CN111313143B9 (en) * | 2020-03-27 | 2024-03-29 | 中交遥感天域科技江苏有限公司 | Control system layout structure of multi-frequency omnidirectional unmanned aerial vehicle control equipment |
| CN111431555A (en) * | 2020-03-30 | 2020-07-17 | 中国电子科技集团公司第三十六研究所 | Method for receiving radio frequency forwarding between mobile forwarding station and ground station |
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