CN103412288B - All solid state X-band portable radar Radio Beacon and signal processing method thereof - Google Patents
All solid state X-band portable radar Radio Beacon and signal processing method thereof Download PDFInfo
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- CN103412288B CN103412288B CN201310273579.4A CN201310273579A CN103412288B CN 103412288 B CN103412288 B CN 103412288B CN 201310273579 A CN201310273579 A CN 201310273579A CN 103412288 B CN103412288 B CN 103412288B
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Abstract
The invention discloses a kind of all solid state X-band portable radar Radio Beacon and signal processing method thereof, receive outside interrogating signal by antenna, enter microwave receiver through diplexer; Microwave receiver carries out low noise amplification to interrogating signal, downconverts to intermediate frequency, sends into digital processing circuit after filtering, amplification, logarithmic detector, Linear Amplifer; Digital processing circuit carries out analyzing and processing to signal, output control signals to microwave transmitter, control the transmitting-receiving time-sharing work of microwave transmitter, and modulate transmitting, transmit and externally to be replied by antenna through diplexer, Microwave Frequency Source is microwave receiver, microwave transmitter provides frequency source, and power-switching circuit provides the various power supplys needed for electronic system inside.The invention solves conventional beacon machine or operating distance little, or reliability is lower, or Heavy Weight, volume are large, or mode of operation cannot reply communication, or launching code is single, or environment for use require strict, use underaction problem easily.
Description
Technical field
The invention belongs to navigator field, be specifically related to a kind of all solid state X-band portable radar Radio Beacon that can be applicable to the dual-use fields such as navigation, location, search and rescue, air control, and corresponding signal processing method.
Background technology
Radar beacon machine is a kind of inquiry that can receive a certain frequency range radar, and answers the navigator of inquiry by another frequency of same frequency range, belongs to response formula Radio Beacon.
Portable radar Radio Beacon can be carried by ground staff, sets up during work on ground, is mainly used in receiving and answers inquiry that is airborne, carrier-borne or other radar.Be operated in the radar beacon machine of X-band (frequency is at the radio waveband of 8 ~ 12GHz), little by weather effect, especially in the situation of rainy day, greasy weather and poor visibility, can huge effect be played.
Traditional portable radar Radio Beacon, in order to reach operating distance far away, needs to adopt electron tube to produce powerful transmitting.There is the inferior positions such as reliability is low, volume is large in the use of electron tube.Secondly, traditional portable radar Radio Beacon only has single power supply interface, cannot meet the user demand of different power supply environment, use dirigibility poor.Traditional portable radar Radio Beacon can only launch a kind of fixing coded signal.
Market also has the Radio Beacon of some kinds, some operating distance is less, and what have cannot work under complexity, severe environmental conditions, some dependence GPS, and can only transmitting of having belongs to one-way fashion work.Although some is comparative maturity, in telecommute, response communication, complex conditions adaptability etc., there is obvious limitation.
Summary of the invention
For the problems referred to above of existing portable radar Radio Beacon, applicant is through Improvement, there is provided that a kind of operating distance is far away, coding form is various and adjustable, volume is little, lightweight, reliability is high, all solid state X-band portable radar Radio Beacon that can adapt to multiple rugged surroundings, be suitable for number of different types power environment, and corresponding signal processing method.
Technical scheme of the present invention is as follows:
A kind of all solid state X-band portable radar Radio Beacon, comprises antenna, diplexer, microwave receiver, digital processing circuit, microwave transmitter, Microwave Frequency Source and power-switching circuit; Described antenna is connected with diplexer, be linked in sequence between the input/output terminal of described diplexer microwave receiver, digital processing circuit and microwave transmitter, described Microwave Frequency Source is microwave receiver, microwave transmitter provides frequency source, and described power-switching circuit provides power supply for above-mentioned each circuit module.
Its further technical scheme is: described antenna comprises omnidirectional antenna and directional antenna.
Its further technical scheme is: also comprise self-check control circuit, and described self-check control circuit is connected with the input end of microwave receiver.
And its further technical scheme is: described each circuit module adopts total solidity electronic components and parts.
The present invention also provides a kind of signal processing method of all solid state X-band portable radar Radio Beacon, comprise the following steps: after omnidirectional antenna or directional antenna receive the interrogating signal of assigned frequency, interrogating signal enters frequency mixer through diplexer, directional coupler, limiter, with local oscillation signal mixing, produce intermediate-freuqncy signal; Intermediate-freuqncy signal, after filtering, amplification, logarithmic detector, Linear Amplifer, is given to adaptive threshold circuit; Adaptive threshold circuit exports a trigger pulse to coding circuit, and coding circuit exports pulse code by selected coded system; Pulse code enters power supply modulator circuit, controls the power supply of output switch and the transmission channel transmitted, produces pulse modulated HIGH-POWERED MICROWAVES signal, be transferred to antenna outwards launch through diplexer, receive for inquiry side.
Advantageous Effects of the present invention is:
Maximum operating range of the present invention can reach beyond 80km; Totally 25 kinds of transponder pulse forms are available two classes; Three kinds of power supply types can be adapted to, be respectively 12VDC, 24VDC and civil power 220VAC; Adopt all solid state integrated circuit (IC) design, reliability be high, volume is little, lightweight, weight is less than 2.5kg; Operating temperature range-35 DEG C ~+50 DEG C; Multiple environmental form can be adapted to, such as rainfall, sand dust, damp and hot, mould, salt fog etc.
The invention solves conventional beacon machine or operating distance little, or reliability is lower, or Heavy Weight, volume are large, or mode of operation cannot reply communication, or launching code is single, or environment for use require strict, use underaction problem easily.
The advantage that the present invention adds provides in the description of embodiment part below, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Fig. 2 is Microwave Frequency Source circuit theory diagrams of the present invention.
Fig. 3 is power-switching circuit schematic diagram of the present invention.
Fig. 4 is self-check control circuit schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
Portable radar Radio Beacon of the present invention, primarily of antenna and main frame composition, also has the part such as service cable, lithium battery in addition.Fig. 1 shows technical schematic diagram of the present invention, and as shown in Figure 1, antenna 1 is divided into omnidirectional antenna and directional antenna; Main frame is the Integrated Electronic System comprising diplexer 2, microwave receiver 3, digital processing circuit 4, microwave transmitter 5, Microwave Frequency Source 6, power-switching circuit 7 and optional self-check control circuit 8.
In Fig. 1, the interrogating signal of the outside received by antenna 1, enters microwave receiver 3 through diplexer 2; Microwave receiver 3 pairs of interrogating signals carry out low noise amplification, downconvert to intermediate frequency, and after carrying out filtering, amplification, logarithmic detector, Linear Amplifer to intermediate-freuqncy signal, electric signal are given digital processing circuit 4; Digital processing circuit 4 pairs of signals carry out analyzing and processing, output control signals to microwave transmitter 5, control the transmitting-receiving time-sharing work of microwave transmitter 5, and modulate transmitting.Transmit and externally to be replied by antenna 1 through diplexer 2.Microwave Frequency Source 6 is microwave receiver 3, microwave transmitter 5 provides frequency source needed for work.Self-check control circuit 8, for generation of an analog receiving signal, is sent into microwave receiver 3 and is done self-inspection process.Power-switching circuit 7 provides the various power supplys needed for electronic system inside of the present invention.
Below each ingredient of the present invention is specifically described respectively.
Antenna 1: portable radar Radio Beacon of the present invention is equipped with two kinds of antennas and selects for time actual, omnidirectional antenna uses one dimension harmonic oscillation type gap antenna, radiating guide by eight narrow walls incline seam and four wide wall transverse joints form, narrow wall inclines seam as primary radiation source, in symmetria bilateralis to opening four seams, adjacent slits vergence direction is alternately contrary, the horizontal polarized wave that the synthesis of each seam radiation field is parallel with waveguide axis.Directional antenna designs 4 parallel resonance gaps at the center line on a narrow limit of waveguide, and resonance length is the half of operation wavelength, and spacing is half waveguide wavelength, and inclination angle, gap will meet coupling in parallel requirement.R-joining replaces inclination and realizes cophase detector, simultaneously minimum for ensureing polarization mismatch loss, designs 4 symmetrical R-joinings, offsets unwanted horizontal polarized wave.Two kinds of antennas can be selected as required, and omnidirectional antenna can realize all standing in level 360 °, but antenna gain is lower, and operating distance is relatively near.There is locality in directional antenna level orientation, but antenna gain is higher, farther operating distance can be realized.Antenna house is higher owing to relating to frequency, and dielectric overlay can affect the performance of antenna, and therefore radome material selects windproof, husky, the rain of energy, and affects little fiberglass to electrical property, and structure is individual layer thin-wall conical.Cover thickness is less than 1.5mm, reaches 1/20 of antenna operating wavelength, can ignore antenna performance impact.
Microwave receiver 3: comprise directional coupler, limiter and frequency mixer.Adopt typical superheterodyne receiver pattern, the interrogating signal received by antenna is by low noise amplification, downconvert to intermediate frequency with local oscillator LO, and intermediate-freuqncy signal, through filter and amplification, is amplified by logarithmic detector and realized higher dynamic range.
Digital processing circuit 4: comprise adaptive threshold circuit and coding circuit.The effect of adaptive threshold circuit is the stable answering delay time, make it to have nothing to do with the level of Received signal strength, the work trigger pip XMT of this circuit is from modulating unit, when there being modulating pulse to export, adaptive threshold circuit is exported shielding by this signal in advance, prevents transponder pulse to bleed coding circuit.Coding circuit receives the signal arrived to adaptive threshold circuit, exports according to the coded system pre-set, as the control signal receiving, launch time-sharing work, and modulate emission pulse.
Microwave transmitter 5: comprise power supply modulator circuit.Adopt all solid-state transmitter technology to realize, use the GaAs power amplifier of saturation output power about 30 watts, realize complete machine and export the requirement being greater than 20 watts.And amplifier drain voltage is modulated, the power-efficient of radiating circuit can be improved greatly.Solid state transmitter technology has that the life-span is long, reliability is high, volume is little, lightweight, the advantage that efficiency is high, easy to maintenance, cost is low.To realizing the miniaturization of described radar beacon machine, high reliability is significant.
Microwave Frequency Source 6, as shown in Figure 2: adopt three independently phase-locked loop circuit respectively as launch Ft, local oscillator LO, receive F0 point-frequency signal source.Circuit adopts crystal oscillator as reference source.Each phaselocked loop comprises 3 element circuits, phase detector, loop filter and voltage controlled oscillator.Phase detector compares the phase place of the phase place of periodic input signal and voltage controlled oscillator signal, the output signal of phase detector is the tolerance of phase error between these two input signals, this error voltage carries out filtering by loop filter afterwards, and the output of loop filter is used as control voltage delivers to voltage controlled oscillator, control voltage changes the frequency of voltage controlled oscillator, to reduce the phase error between input signal and voltage controlled oscillator, until null phase error.Realize frequency stabilization to export.
Power-switching circuit 7, as shown in Figure 3: can adapt to three kinds of power supply types, one is vehicle-mounted or battery 12VDC, and two is vehicle-mounted 24VDC, and three is civil power 220VAC.Entered by the different wire harness of same cable, obtain the various power supplys needed for described portable radar Radio Beacon inside through power supply process.
Self-check control circuit 8, as shown in Figure 4: frequency source produces the interrogating signal of a simulation, simulates the described portable radar Radio Beacon course of work, differentiates that whether it is working properly by receiving intermediate frequency signal detection and the detection that transmits.The oneself realizing described portable radar Radio Beacon detects.
Signal processing method of the present invention is as follows:
After omnidirectional antenna or directional antenna receive the interrogating signal of assigned frequency, interrogating signal enters frequency mixer through diplexer, directional coupler, limiter, the local oscillation signal mixing produced with Microwave Frequency Source, produces intermediate-freuqncy signal.Intermediate-freuqncy signal, after filtering, amplification, logarithmic detector, Linear Amplifer, is given to adaptive threshold circuit; Adaptive threshold circuit exports a trigger pulse to coding circuit, and coding circuit exports pulse code by selected coded system; Pulse code enters power supply modulator circuit, controls the power supply of output switch and the transmission channel transmitted, produces pulse modulated HIGH-POWERED MICROWAVES signal, be transferred to antenna outwards launch through diplexer, receive for inquiry side.
In sum, frequency of operation of the present invention is at X-band, inner microwave transmitter, microwave receiver, digital processing circuit, power supplys etc. adopt total solidity electronic components and parts, launched microwave signal power is up to more than 20W, it is about 3.16 × 10-11 watt that receiving sensitivity is better than-75dBm(i.e. minimum discernible signal), built-in X-band phase-locked loop frequency source produces the microwave signal of 3 frequencies, signal frequency precision is high and stable, band transmitting-receiving self-checking function, be with multiple launching code adjustable function, with the dual-mode antenna of various modes, three kinds of Power supply conditions can be adapted to, Miniaturized portable designs, volume is little, lightweight.Can be used for the Military and civil fields such as navigation, location, search and rescue.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive without departing from the basic idea of the present invention or associate, all should think and be included within protection scope of the present invention.
Claims (3)
1. an all solid state X-band portable radar Radio Beacon, is characterized in that, comprise antenna, diplexer, microwave receiver, digital processing circuit, microwave transmitter, Microwave Frequency Source and power-switching circuit; Described antenna is connected with diplexer, be linked in sequence between the input/output terminal of described diplexer microwave receiver, digital processing circuit and microwave transmitter, described Microwave Frequency Source is microwave receiver, microwave transmitter provides frequency source, and described power-switching circuit provides power supply for above-mentioned each circuit module; Described antenna comprises omnidirectional antenna and directional antenna; Omnidirectional antenna uses one dimension harmonic oscillation type gap antenna, radiating guide by eight narrow walls incline seam and four wide wall transverse joints form, narrow wall inclines seam as primary radiation source, four seams are opened in symmetria bilateralis, adjacent slits vergence direction is alternately contrary, the horizontal polarized wave that the synthesis of each seam radiation field is parallel with waveguide axis; Directional antenna designs four parallel resonance gaps at the center line on a narrow limit of waveguide, and resonance length is the half of operation wavelength, and spacing is half waveguide wavelength, and inclination angle, gap meets coupling in parallel requirement; R-joining replaces inclination and realizes cophase detector, designs four symmetrical R-joinings simultaneously and offsets unwanted horizontal polarized wave; Radome material selects fiberglass, and structure is individual layer thin-wall conical, and thickness is less than 1.5mm, reaches 1/20 of antenna operating wavelength.
2. all solid state X-band portable radar Radio Beacon according to claim 1, it is characterized in that, also comprise self-check control circuit, described self-check control circuit is connected with the input end of microwave receiver.
3. all solid state X-band portable radar Radio Beacon according to claim 1 or 2, is characterized in that, described each circuit module adopts total solidity electronic components and parts.
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| CN104820219A (en) * | 2015-05-25 | 2015-08-05 | 扬州宇安电子科技有限公司 | Active radar beacon machine and processing method thereof based on virtual target |
| CN104865557A (en) * | 2015-05-25 | 2015-08-26 | 扬州宇安电子科技有限公司 | Method improving radar active beacon machine precision |
| CN104833965A (en) * | 2015-05-25 | 2015-08-12 | 扬州宇安电子科技有限公司 | Radar beacon machine and diversity radar signal processing method thereof |
| CN105572665A (en) * | 2015-12-11 | 2016-05-11 | 无锡市雷华科技有限公司 | Coast defense searching radar system |
| CN106501805A (en) * | 2016-10-18 | 2017-03-15 | 合肥浮点信息科技有限公司 | A kind of electronic product with spacing speed aid prompting function |
| CN106291511B (en) * | 2016-10-21 | 2019-06-11 | 兰州大学 | A kind of laser radar system multi-channel back wave signal adapting device |
| CN108445305B (en) * | 2018-03-13 | 2023-06-23 | 南京信息工程大学 | Electronic downtilt angle detection system and method for mobile base station antenna |
| CN108768438B (en) * | 2018-08-21 | 2023-10-10 | 无锡华测电子系统有限公司 | Solid 64-channel receiving and transmitting assembly |
| CN110311698A (en) * | 2019-07-15 | 2019-10-08 | 无锡华测电子系统有限公司 | A kind of miniature drone transmitting-receiving subassembly based on three-dimensional assembling and MCM technology |
| CN114966582B (en) * | 2022-07-29 | 2022-11-11 | 成都市克莱微波科技有限公司 | Microwave transceiving assembly self-checking method and system |
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| CN2062853U (en) * | 1989-09-07 | 1990-09-26 | 交通部天津海上安全监督局 | Portable tester for radar responser |
| CN102749619A (en) * | 2011-04-20 | 2012-10-24 | 成都天奥电子股份有限公司 | Positioning radar responder for maritime search and rescue |
| CN102998670B (en) * | 2012-11-29 | 2014-03-26 | 北京无线电测量研究所 | Ka-frequency-band fixed-orientation dual-polarization all-solid-state millimeter-wave cloud radar |
| CN203324472U (en) * | 2013-07-01 | 2013-12-04 | 无锡华测电子系统有限公司 | All-solid-state X-wave-band portable radar beacon machine |
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