CN103296427A - Method for achieving phased-array antenna gain self-adaptation control - Google Patents
Method for achieving phased-array antenna gain self-adaptation control Download PDFInfo
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- CN103296427A CN103296427A CN2013100767095A CN201310076709A CN103296427A CN 103296427 A CN103296427 A CN 103296427A CN 2013100767095 A CN2013100767095 A CN 2013100767095A CN 201310076709 A CN201310076709 A CN 201310076709A CN 103296427 A CN103296427 A CN 103296427A
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Abstract
The invention provides a method for achieving phased-array antenna gain self-adaptation control. The method can keep small output allowances, and improves the working efficiency of equipment. According to the technical scheme, the method comprises the steps that a phased-array receiving array element receives pitching difference signals, azimuth difference signals and signals, the pitching difference signals, the azimuth difference signals and the signals are formed by target signals, corresponding frequency converters carry out down frequency conversion processing on the pitching difference signals, the azimuth difference signals and the signals respectively, the pitching difference signals, the azimuth difference signals and the signals are then sampled through analog-to-digital converters correspondingly connected and are sent to a trapping and tracking device, signal trapping and signal tracking are carried out, an azimuth angle and an pitching angle are output to a wave controller, signal-to-noise-ratio detection and target distance evaluation are carried out by the wave controller and a first signal separating path, the ETRP value of an emitting antenna is calculated according to a distance evaluating value, and the quantity combination of emitting antenna array elements and beam pointing control are achieved through the wave controller; high-speed data input in a high-speed modulator are modulated on an emitting signal carrier wave and are sent to DAC to be reconstructed and processed, and the formation of space beams pointing a target direction is achieved.
Description
Technical field
The invention relates in the telemetry communication field, be phase array system TT﹠C system, a kind of implementation method of antenna gain adaptive control is provided, the realization system satisfies the optimum EIRP value output of determining under the transmission rate condition.
Background technology
Phased array antenna is to utilize the radiation array element of some, utilizes ripple control device to control the phase place of each array element radiation signal, realizes synthetic certain direction in space of beam position of array element.Phased array antenna has high-gain, beam direction characteristics such as scanning fast, and the gain of phased array antenna increases and increases with its array element quantity, and antenna beamwidth increases and narrows down with array element quantity.Development along with the telemetry communication technology, the high speed data transfer demand is urgent, and high speed data transfer needs system antenna to have high ERP EIRP value, phased array antenna EIRP value is the summation of antenna gain and all array element signals power outputs, high EIRP value phase array antenna beam is narrower, carrying out echo signal when catching, narrow antenna beam target is difficulty, need carry out goal directed, simultaneously in order to satisfy the requirement of system high-speed message transmission rate, the most abominable situation is often considered in the phased array antenna design, antenna EIRP value leaves enough surpluses, real system work overall process like this, phased array antenna is operated in the full power output state constantly, causes antenna equipment to consume a large amount of power consumptions, wasted a large amount of systems energy, also will adopt special cooling measure at phased array antenna simultaneously, for the aircraft carrying platform of energy demand anxiety, this Design Mode is quite unfavorable.
Development along with vehicle technology, aircraft is more and more higher to the requirement that it carries electronic equipment, the electronic equipment that carries is except need satisfy electricity function index, also to possess specific (special) requirements such as low-power consumption, miniaturization, light weight, under this demand pull, the aircraft live subset of high workload efficient will have vast potential for future development.Improve the operating efficiency of aircraft live subset, mean the power loss that needs reduction equipment, guarantee to reduce design margin under the message transmission rate condition that equipment ERP EIRP value satisfies the demand as far as possible.
Summary of the invention
The objective of the invention is to be phase array system TT﹠C system, provide a kind of and can keep less output surplus, reduction equipment work power consumption improves the implementation method of the antenna gain adaptive control of equipment operating efficiency, and the realization system satisfies the optimum EIRP value output of determining under the transmission rate condition.
The present invention solves the scheme that the prior art problem adopts: a kind of implementation method of phased array antenna gain-adaptive control, it is characterized in that comprising the steps: that phase array receives array element and receives the trim signal that echo signal forms, the gun parallax signal reaches and signal, divide three tunnel three frequency converters sending into correspondence to carry out down-converted, the A-D converter ADC sampling that links to each other by three correspondences again, deliver to catch with tracker and carry out input and catch and follow the tracks of, the directional information of the relative reception antenna of export target, export one the road and signal estimate the signal to noise ratio that receives signal by SNR estimator, the smnr data that estimates is after the estimation of Target Distance Estimation device target range, with the basis of this range estimation value as transmitting antenna ERP EIRP value, the target direction information that obtains and transmitting antenna EIRP Value Data are sent into ripple control device, the quantity of phase array launching antenna array unit combination is selected to control with beam position; The high speed data modulations of input high-speed modulator is to the carrier wave that transmits, sending digital to analog converter DAC to carry out signal reconstruction handles, through frequency converter up-conversion and band pass filter BPF filtering, the phase array of incoming wave control device appointment emission array element realizes that the spatial beams of definite object direction is synthetic again.
The present invention has following beneficial effect than prior art:
The present invention is directed to phase array system TT﹠C system, adopted the technology that is different from traditional phased array antenna mode of operation to realize approach.Traditional phased array antenna is that design array element is all participated in real work directly, and the antenna ERP EIRP value surplus of design is bigger, and equipment power dissipation and power output are in maximum rating always.And the present invention has adopted bay gain-adaptive control technology, telemetry communication distance according to reality, calculate optimum ERP EIRP value and the array element quantity that the phase array transmitting antenna needs in real time, launch array element accordingly by ripple control device gating and realize signal output.This method can make equipment ERP EIRP value satisfy under the definite information rate condition of transmission, keeps less output surplus, has reduced the work power consumption of equipment, equipment high efficiency, but the different rate of information throughput conditions of demand of flexible adaptation.
Description of drawings
Below in conjunction with drawings and Examples this patent is further specified.
Fig. 1 is the theory diagram of a kind of phased array antenna gain-adaptive control of the present invention implementation method.
Embodiment
Consult Fig. 1.In following examples, phased array antenna gain-adaptive control implementation method, comprise, after receiving array element and receive echo signal by phase array, formation trim signal, gun parallax signal reach and signal, send frequency converter 1, frequency converter 2 and frequency converter 3 to carry out down-converted respectively, send A-D converter ADC1, A-D converter ADC2, A-D converter ADC3 to sample again respectively after, send to catch with tracker and carry out input.Catch with tracker receive trim signal that reception antenna array element forms, gun parallax signal and and signal after, by extracting signal phase, obtain azimuth and the angle of pitch information of the relative phased array receiving antenna of target in real time, the beam position of controlling transmit phased array antenna for ripple control device provides data.Catch with tracker and realize signal capture and tracking, the directional information of the relative reception antenna of export target, and by sending one the road to SNR estimator with signal, receive the signal-to-noise ratio (snr) estimation of signal.SNR estimator receive with signal after, can obtain receiving the signal to noise ratio of signal by envelope-demodulation method, smnr data is sent the Target Distance Estimation device, and utilize target transmitting antenna EIRP value, receiving antenna gain and noise-temperature ratio G/T value, can estimate the distance of target, can further estimate the certain data-rate information of transmission, the EIRP value that the phase array transmitting antenna is required by target range.The estimation equation of target range R is:
201gR＝EIRP
obj+G
PA/T+228.6-S/N-L
a,(dB)
In the formula, EIRP
ObjBe the radiant power of target, G
PA/ T is gain and the noise temperature ratio of phased array receiving antenna, and S/N is the signal to noise ratio that receives signal, L
aIt is the summation of atmospheric attenuation, antenna pointing error etc.
Transmitting antenna EIRP accounting equation is: EIRP=201gR-G
Obj/ T-228.6+E
b/ N
0+ R
b+ L
a, (dB) in the formula, G
Obj/ T is gain and the noise temperature ratio of target receiver antenna, E
b/ N
0Be the bit noise power spectral density ratio of target receiver, R
bBe message transmission rate, 201gR is the signal space loss, L
aIt is the summation of atmospheric attenuation, antenna pointing error etc.The smnr data that SNR estimator estimates send the Target Distance Estimation device to carry out the target range estimation, with the basis of this range estimation value as transmitting antenna EIRP value, obtain optimum EIRP value, target direction information and transmitting antenna EIRP Value Data are delivered to ripple control device, realize selection and the beam position control of phase array launching antenna array unit combination quantity by ripple control device.Ripple control device is controlled data with azimuth of target and the angle of pitch information of input as transmitting antenna array element, calculates transmitting antenna array element quantity with input transmitting antenna EIRP value.The emission array element of having selected realizes power amplification and the radiation of signal by the power supply switch of the corresponding power amplifier chip of ripple control device gating.Transmitting antenna array element quantity N accounting equation is: 201gN=EIRP-101gP
0-101g π-101g η, (dB), in the formula, P
0Be single array element power amplifier power, η is combined coefficient.
After high-speed data is input to high-speed modulator, modulate data on the carrier wave that transmits, sending digital to analog converter DAC to carry out signal reconstruction handles, be input to frequency converter and carry out up-conversion, again after band pass filter BPF filtering, be input to the phase array emission array element of ripple control device appointment, realize that the spatial beams of definite object direction is synthetic.
Claims (8)
1. the implementation method of phased array antenna gain-adaptive control, it is characterized in that comprising the steps: that phase array receives array element and receives the trim signal that echo signal forms, the gun parallax signal reaches and signal, divide three tunnel three frequency converters sending into correspondence to carry out down-converted, the A-D converter ADC sampling that links to each other by three correspondences again, deliver to catch with tracker and carry out input and catch and follow the tracks of, the directional information of the relative reception antenna of export target, export one the road and signal estimate the signal to noise ratio that receives signal by SNR estimator, the smnr data that estimates is after the estimation of Target Distance Estimation device target range, with the basis of this range estimation value as transmitting antenna ERP EIRP value, the target direction information that obtains and transmitting antenna EIRP Value Data are sent into ripple control device, the quantity of phase array launching antenna array unit combination is selected to control with beam position; The high speed data modulations of input high-speed modulator is to the carrier wave that transmits, sending digital to analog converter DAC to carry out signal reconstruction handles, through frequency converter up-conversion and band pass filter BPF filtering, the phase array of incoming wave control device appointment emission array element realizes that the spatial beams of definite object direction is synthetic again.
2. press the implementation method of the described phased array antenna gain-adaptive control of claim 1, it is characterized in that, catch with tracker receive trim signal that reception antenna array element forms, gun parallax signal and and signal after, by extracting signal phase, obtain azimuth and the angle of pitch information of the relative phased array receiving antenna of target in real time, the beam position of controlling transmit phased array antenna for ripple control device provides data.
3. press the implementation method of the described phased array antenna gain-adaptive control of claim 1, it is characterized in that, SNR estimator receive with signal after, obtain receiving the signal to noise ratio of signal by envelope detection, smnr data is sent the Target Distance Estimation device, utilize target transmitting antenna EIRP value, receiving antenna gain and noise-temperature ratio G/T value, estimate the distance R of target, further estimate the certain data-rate information of transmission and the required EIRP value of phase array transmitting antenna.
4. by the implementation method of the described phased array antenna gain-adaptive control of claim 3, it is characterized in that the estimation equation of target range R is:
201gR＝EIRP
obj+G
PA/T+228.6-S/N-L
a,(dB)
In the formula, EIRP
ObjBe the radiant power of target, G
PA/ T is gain and the noise temperature ratio of phased array receiving antenna, and S/N is the signal to noise ratio that receives signal, L
aIt is the summation of atmospheric attenuation, antenna pointing error etc.
5. by the implementation method of the described phased array antenna gain-adaptive control of claim 3, it is characterized in that transmitting antenna EIRP accounting equation is:
EIRP＝201gR-G
obj/T-228.6+E
b/N
0+R
b+L
a,(dB)
In the formula, G
Obj/ T is gain and the noise temperature ratio of target receiver antenna, E
b/ N
0Be the bit noise power spectral density ratio of target receiver, R
bBe message transmission rate, 201gR is the signal space loss, L
aIt is the summation of atmospheric attenuation, antenna pointing error etc.
6. press the implementation method of the described phased array antenna gain-adaptive control of claim 1, it is characterized in that, ripple control device is controlled data with azimuth of target and the angle of pitch information of input as transmitting antenna array element, calculates transmitting antenna array element quantity with input transmitting antenna EIRP value.
7. by the implementation method of the described a kind of phased array antenna gain-adaptive control of claim 1, it is characterized in that the emission array element of having selected realizes power amplification and the radiation of signal by the power supply switch of the corresponding power amplifier chip of ripple control device gating.
8. by the implementation method of the described control array antenna of claim 1 gain-adaptive control, it is characterized in that transmitting antenna array element quantity N accounting equation is:
201gN＝EIRP-101gP
0-101gπ-101gη,(dB)
In the formula, P
0Be single array element power amplifier power, η is combined coefficient.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107947807A (en) * | 2017-11-30 | 2018-04-20 | 贵州航天电子科技有限公司 | A kind of Monopulse estimation passage merges echo reception system |
| CN108900200A (en) * | 2018-06-21 | 2018-11-27 | 厦门大学 | A kind of transparent transmission wireless communication system towards industrial trade |
| CN109547090A (en) * | 2018-11-26 | 2019-03-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The method of adaptive adjustment satellite relay data transfer communications rate |
| CN109827472A (en) * | 2018-12-12 | 2019-05-31 | 中国人民解放军陆军工程大学 | A kind of method, apparatus and electronic equipment handling downlink signal |
| CN110366743A (en) * | 2017-08-24 | 2019-10-22 | 深圳市大疆创新科技有限公司 | Remote Slave Set, remote controler and remote control system |
| CN111290434A (en) * | 2020-03-10 | 2020-06-16 | 英华达（南京）科技有限公司 | Unmanned aerial vehicle guiding method, system, equipment and storage medium |
| CN114301520A (en) * | 2016-07-01 | 2022-04-08 | 高高商务航空有限责任公司 | Dynamic Effective Radiated Power (ERP) adjustment |
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| CN108900200A (en) * | 2018-06-21 | 2018-11-27 | 厦门大学 | A kind of transparent transmission wireless communication system towards industrial trade |
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| CN109547090A (en) * | 2018-11-26 | 2019-03-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The method of adaptive adjustment satellite relay data transfer communications rate |
| CN109827472A (en) * | 2018-12-12 | 2019-05-31 | 中国人民解放军陆军工程大学 | A kind of method, apparatus and electronic equipment handling downlink signal |
| CN111290434A (en) * | 2020-03-10 | 2020-06-16 | 英华达（南京）科技有限公司 | Unmanned aerial vehicle guiding method, system, equipment and storage medium |
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