CN108834208A - A kind of power distribution method of radar-communication synthesis radio frequency system - Google Patents
A kind of power distribution method of radar-communication synthesis radio frequency system Download PDFInfo
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- CN108834208A CN108834208A CN201810500589.XA CN201810500589A CN108834208A CN 108834208 A CN108834208 A CN 108834208A CN 201810500589 A CN201810500589 A CN 201810500589A CN 108834208 A CN108834208 A CN 108834208A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
Abstract
The invention discloses a kind of radar-communication synthesis radio frequency system power distribution methods, are related to radar signal processing field, can minimize radar-communication synthesis radio frequency system total transmission power, promote its radio frequency Stealth Fighter.The present invention includes：Radar target acquisition path signal-to-noise ratio and communication channel signal-to-noise ratio are calculated, as priori knowledge；According to radar-communication synthesis radio frequency system demand and priori knowledge, radar-communication synthesis radio frequency system optimal power allocation mathematical model is established；Optimal power allocation mathematical model is solved, optimal power allocation result is obtained.The present invention can carry out adaptive optimal controls for the transmission power of signal of communication and radar waveform to system, achieve the purpose that minimum radar-communication synthesis radio frequency system total transmission power under conditions of meeting certain traffic rate and target acquisition performance.
Description
Technical field
The present invention relates to radar signal processing field more particularly to a kind of radar-communication synthesis radio frequency system power point
Method of completing the square.
Background technique
In recent years, as IT-based warfare is to the multi-functional urgent need of optimal in structure, modern operation platform such as fighter plane,
The equipment such as radar, the communication of the equipments such as helicopter, naval vessels are more and more, weight shared by radio-frequency apparatus, volume, resource consumption and
Cost etc. also increasingly increases, meanwhile, it also will cause serious electromagnetic interference between distinct device, influence works normally each other.Benefit
The multitasks, multi-functional comprehensive radio frequency system such as radar, communication are realized with shared antenna aperature, can not only be effectively improved operation
The Electro Magnetic Compatibility and Stealth Fighter of platform different radio frequency equipment room, and it is able to ascend the overall combat effectiveness of optimal in structure.
Therefore, comprehensive radio frequency system has become the important directions of current radio frequency equipment Development, causes countries in the world academia and engineering
The extensive concern on boundary.
Since the 1980s, the U.S. takes the lead in having carried out a series of advanced Multifunctional radio-frequency Study on Integration projects,
Achieve the achievement to attract people's attention.In addition, the country such as Italy, Sweden and European Defence Agency and scientific research institution are all directed to more function
Energy radio frequency system, the expansion research of multifunctional active Electronically Scanned Array antenna, also all achieve good achievement.Wherein, the U.S.
Transmitting antenna is divided into several each identical submatrixs by the advanced Multifunctional radio-frequency concept project that naval carries out, while for real
The task functions such as existing radar, communication, electronics show.However, the antenna array division mode of this fixation lacks flexibility, Bu Nengsui
Operational environment or mission requirements variation and the distribution condition of dynamic debugging system transmission resources.
To sum up, lack a kind of power distribution method in the prior art, minimize the total hair of radar-communication synthesis radio frequency system
Power is penetrated, its radio frequency Stealth Fighter is promoted.
Summary of the invention
The present invention provides a kind of power distribution method of radar-communication synthesis radio frequency system, can meet certain communication
It is adaptive excellent for the progress of the transmission power of signal of communication and radar waveform to system under conditions of rate and target acquisition performance
Change design, achievees the purpose that minimum radar-communication synthesis radio frequency system total transmission power.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of power distribution method of radar-communication synthesis radio frequency system, including：
S1, radar target acquisition path signal-to-noise ratio and communication channel signal-to-noise ratio are calculated, as priori knowledge；
S2, foundation radar-demand of the communication synthesis radio frequency system to traffic rate and target acquisition performance, determine radar-
Traffic rate thresholding, false-alarm probability thresholding and the target detection probability thresholding of communication synthesis radio frequency system；
S3, using priori knowledge, traffic rate thresholding, false-alarm probability thresholding, target detection probability thresholding, establish radar-
The optimal power allocation mathematical model of communication synthesis radio frequency system；
S4, optimal power allocation mathematical model is solved, obtains optimal power allocation result.
Further, the optimal power allocation mathematical model is：
Wherein, PradThe transmission power of radar waveform, P are used for for radar-communication synthesis radio frequency systemcomFor radar-communication
Comprehensive radio frequency system is used for the transmission power of signal of communication, rthFor traffic rate thresholding, pFAFor false-alarm probability, pDIt is general to detect
Rate, δFAFor false-alarm probability thresholding, δDFor target detection probability thresholding, γradFor radar target acquisition path signal-to-noise ratio, γcomFor
Communication channel signal-to-noise ratio, R=log2(1+Pcomγcom) it is traffic rate, pFAFor radar false alarm probability, pDFor detection probability, λ is
Target decision thresholding, PminFor the radar-communication synthesis radio frequency system total transmission power lower limit, PTotalFor radar-communication synthesis
The radio frequency system total transmission power upper limit,For single order Marcum Q function, i.e.,：
Wherein,It is single for first kind zeroth order modified Bessel function
Adjust increasing function.
According to algebraic operation, formula (1) can equivalence be converted into：
Further, when the sign of inequality in formula (3) takes equal sign, formula (3) acquired results, that is, described optimal power point
With result.
Further, the radar-communication synthesis radio frequency system is for the optimum transmission power of signal of communication：
Wherein, P* comThe optimum transmission power of signal of communication, γ are used for for the radar-communication synthesis radio frequency systemcomFor
The communication channel signal-to-noise ratio, rthFor the traffic rate thresholding.After acquiring target decision thresholding λ, formula (4) uses two points
Search method is solved.
The beneficial effects of the invention are as follows：
On the basis of the present invention obtains radar target acquisition path and communication channel propagation signal-to-noise ratio according to priori knowledge,
Under conditions of meeting certain traffic rate and target acquisition performance, the transmission power of signal of communication and radar waveform is used for system
Adaptive optimal controls are carried out, priori knowledge and traffic rate thresholding, false-alarm probability thresholding, target detection probability door are first used
Limit is penetrated on the basis of obtaining radar target acquisition path and communication channel propagates signal-to-noise ratio with minimizing radar-communication synthesis
The total transmission power of display system is target, establishes radar-communication synthesis radio frequency system optimal power allocation mathematical model, passes through
Dichotomy solves the optimal solution of mathematical model, penetrates to obtain optimal power allocation as a result, reaching minimum radar-communication synthesis
The purpose of display system total transmission power improves radar-communication synthesis radio frequency system radio frequency Stealth Fighter.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is radar-communication synthesis radio frequency system illustraton of model；
Fig. 2 is radar and communications system optimal power distribution process figure；
Fig. 3 is that binary search solves radar waveform transmission power flow chart；
Fig. 4 is target detection probability under different communication rate and communication channel condition with the change curve of total transmission power；
Fig. 5 is radar under distinct methods-communication synthesis radio frequency system transmission power comparison.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, With reference to embodiment to this
Invention is described in further detail.
A kind of power distribution method of radar-communication synthesis radio frequency system, flow chart is as shown in Fig. 2, include：
S1, radar target acquisition path signal-to-noise ratio γ is calculatedradWith communication channel signal-to-noise ratio γcom, as priori knowledge, thunder
It is as shown in Figure 1 up to-communication synthesis radio frequency system model；
S2, foundation radar-demand of the communication synthesis radio frequency system to traffic rate and target acquisition performance, determine radar-
The traffic rate thresholding r of communication synthesis radio frequency systemth, false-alarm probability thresholding δFAWith target detection probability thresholding δD；
S3, using priori knowledge, traffic rate thresholding, false-alarm probability thresholding, target detection probability thresholding, establish radar-
The optimal power allocation mathematics type of communication synthesis radio frequency system:
Wherein, PradThe transmission power of radar waveform, P are used for for radar-communication synthesis radio frequency systemcomFor radar-communication
Comprehensive radio frequency system is used for the transmission power of signal of communication, rthFor traffic rate thresholding, pFAFor false-alarm probability, pDIt is general to detect
Rate, δFAFor false-alarm probability thresholding, δDFor target detection probability thresholding, γradFor radar target acquisition path signal-to-noise ratio, γcomFor
Communication channel signal-to-noise ratio, R=log2(1+Pcomγcom) it is traffic rate, pFAFor radar false alarm probability, pDFor detection probability, λ is
Target decision thresholding, PminFor the radar-communication synthesis radio frequency system total transmission power lower limit, PTotalFor radar-communication synthesis
The radio frequency system total transmission power upper limit,For single order Marcum Q function, i.e.,：
Wherein,It is single for first kind zeroth order modified Bessel function
Adjust increasing function.
According to algebraic operation, formula (1) can equivalence be converted into：
S4, optimal power allocation mathematical model is solved, obtains optimal power allocation as a result, when the sign of inequality in formula (3)
When taking equal sign, formula (3) acquired results, that is, described optimal power allocation is as a result, radar-communication synthesis radio frequency system is used to communicate
The optimum transmission power of signal is：
Wherein, P* comThe optimum transmission power of signal of communication, γ are used for for the radar-communication synthesis radio frequency systemcomFor
The communication channel signal-to-noise ratio, rthFor the traffic rate thresholding.After acquiring target decision thresholding λ, formula (4) uses two points
Search method is solved, and flow chart is as shown in Figure 3.
It is iterated to calculate, is chosen under conditions of meeting certain traffic rate and target detection probability and system is always emitted
The smallest communication signal emitting power P of powerc * omWith radar waveform transmission power Pr*adIt is determined for compliance with as optimal solution, and finally
The radar of constraint condition-communication synthesis radio frequency system minimum total transmission power.
The simulation result of the present embodiment is as follows：
Simulation parameter is as shown in table 1.
The setting of 1 simulation parameter of table
Under different communication rate and communication channel condition target detection probability with total transmission power change curve such as Fig. 4 institute
Show.Radar-communication synthesis radio frequency system optimal power allocation method is propagated according to radar target acquisition path and communication channel
The optimal transmitting function that the demand of the priori knowledges such as signal-to-noise ratio and system to traffic rate and target acquisition performance is calculated
Rate.As seen from Figure 4, in the case that traffic rate thresholding and communication channel signal-to-noise ratio are certain, as system always emits function
The increase of the rate upper limit, target detection probability also become larger therewith.And in the system total transmission power upper limit and communication channel signal-to-noise ratio one
In the case where fixed, target detection probability increases with the reduction of traffic rate, this is because being with the reduction of traffic rate
The power resource that system can be used for emitting radar waveform increases, so as to cause detection probability increase.On the other hand, always emit in system
In the case that the upper limit of the power and traffic rate are certain, target detection probability reduces with the increase of communication channel signal-to-noise ratio, this
It is because of the improvement with communication channel signal-to-noise ratio, for the transmission power reduction of signal of communication, similarly, system can be used for sending out
The power resource for penetrating radar waveform increases, so as to cause detection probability increase.
Fig. 5 gives radar under different capacity distribution method-communication synthesis radio frequency system transmission power comparison.It can by Fig. 5
Know, system is for the transmission power allocation result of signal of communication and radar waveform mainly by radar target acquisition path and communication
What the demand of dissemination channel signal-to-noise ratio and system to traffic rate and target acquisition performance determined.Meeting certain traffic rate
Under conditions of target acquisition performance, the resulting radar waveform transmission power of mentioned optimal power allocation method and signal of communication hair
It penetrates power and is significantly less than average power allocation method, so that the former radio frequency Stealth Fighter is better than the latter, this is because uniform function
Rate distribution method is not account for priori knowledges and the traffic rates such as each dissemination channel signal-to-noise ratio and target acquisition performance need
In the case where asking, system total transmission power is evenly distributed to radar waveform and signal of communication, therefore, it has worse radio frequency
Stealth Fighter.And it can be minimized under the premise of guaranteeing given traffic rate based on the maximized power distribution method of detection probability
Communication signal emitting power, but dump power is fully allocated to radar waveform to maximize target detection probability, cause function
The waste of rate resource impairs system radio frequency Stealth Fighter.
By above-mentioned simulation result it is found that radar-communication synthesis radio frequency system optimal power allocation method, according to priori
On the basis of knowledge acquisition radar target acquisition path and communication channel propagate signal-to-noise ratio, penetrated with minimizing radar-communication synthesis
The total transmission power of display system is target, carries out adaptive optimization to the transmission power for signal of communication and radar waveform and sets
Meter, to effectively promote radar-communication synthesis radio frequency system under the premise of guaranteeing certain traffic rate and target acquisition performance
Radio frequency Stealth Fighter.
Beneficial effects of the present invention are：
(1) present invention both ensure that radar-requirement of the communication synthesis radio frequency system to traffic rate and target acquisition performance,
So that system total transmission power minimizes, radar-communication synthesis radio frequency system radio frequency Stealth Fighter is improved.It generates
The reason of advantage is present invention employs radar-communication synthesis radio frequency system optimal power allocation method, and this method is obtaining
On the basis of radar target acquisition path and communication channel propagate signal-to-noise ratio, to minimize radar-communication synthesis radio frequency system
Total transmission power is target, establishes radar-communication synthesis under conditions of meeting certain traffic rate and target acquisition performance and penetrates
The optimal power allocation model of display system；
(2) compared with prior art, radar proposed by the present invention-communication synthesis radio frequency system optimal power allocation method,
It not only ensure that radar-requirement of the communication synthesis radio frequency system to traffic rate and target acquisition performance, so that system
Total transmission power minimizes, and improves radar-communication synthesis radio frequency system radio frequency Stealth Fighter.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (4)
1. a kind of radar-communication synthesis radio frequency system power distribution method, which is characterized in that including：
S1, radar target acquisition path signal-to-noise ratio and communication channel signal-to-noise ratio are calculated, as priori knowledge；
S2, foundation radar-demand of the communication synthesis radio frequency system to traffic rate and target acquisition performance, determine traffic rate door
Limit, false-alarm probability thresholding and target detection probability thresholding etc.；
S3, the priori knowledge, the traffic rate thresholding, the false-alarm probability thresholding, the target detection probability door are utilized
Limit, establishes the radar-communication synthesis radio frequency system optimal power allocation mathematical model；
S4, the optimal power allocation mathematical model is solved, obtains optimal power allocation result.
2. the method according to claim 1, wherein the optimal power allocation mathematical model is：
Wherein, PradThe transmission power of radar waveform, P are used for for radar-communication synthesis radio frequency systemcomFor radar-communication synthesis
Radio frequency system is used for the transmission power of signal of communication, rthFor traffic rate thresholding, pFAFor false-alarm probability, pDFor detection probability, δFA
For false-alarm probability thresholding, δDFor target detection probability thresholding, γradFor radar target acquisition path signal-to-noise ratio, γcomFor communication letter
Road signal-to-noise ratio, R=log2(1+Pcomγcom) it is traffic rate, pFAFor radar false alarm probability, pDFor detection probability, λ sentences for target
Certainly thresholding, PminFor radar-communication synthesis radio frequency system total transmission power lower limit, PTotalIt is total for radar-communication synthesis radio frequency system
Upper limit of emission power,For single order Marcum Q function, i.e.,：
Wherein,For first kind zeroth order modified Bessel function, passed for dullness
Increasing function.
According to algebraic operation, formula (1) can equivalence be converted into：
3. according to the method described in claim 2, it is characterized in that, when the sign of inequality in formula (3) takes equal sign, formula (3)
Acquired results, that is, optimal power allocation result.
4. according to the method described in claim 3, it is characterized in that, the radar-communication synthesis radio frequency system is for communicating letter
Number optimum transmission power be：
Wherein, P* comThe optimum transmission power of signal of communication, γ are used for for the radar-communication synthesis radio frequency systemcomIt is described
Communication channel signal-to-noise ratio, rthFor the traffic rate thresholding.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109672488A (en) * | 2019-01-28 | 2019-04-23 | 南京航空航天大学 | Based on the stealthy radar of radio frequency-communication integrated system optimal power control method |
| CN110346792A (en) * | 2019-06-26 | 2019-10-18 | 南京航空航天大学 | A kind of power distribution method of imaging radar communication system |
| CN111337885A (en) * | 2020-02-18 | 2020-06-26 | 南京航空航天大学 | Radar and communication combined system radio frequency stealth performance optimization method |
| WO2021012833A1 (en) * | 2019-07-25 | 2021-01-28 | 北京邮电大学 | Radar and communication integrated cooperative detection method and apparatus based on beam power distribution |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672488A (en) * | 2019-01-28 | 2019-04-23 | 南京航空航天大学 | Based on the stealthy radar of radio frequency-communication integrated system optimal power control method |
| CN109672488B (en) * | 2019-01-28 | 2021-07-27 | 南京航空航天大学 | Optimal power control method of radar-communication integrated system based on radio frequency stealth |
| CN110346792A (en) * | 2019-06-26 | 2019-10-18 | 南京航空航天大学 | A kind of power distribution method of imaging radar communication system |
| WO2021012833A1 (en) * | 2019-07-25 | 2021-01-28 | 北京邮电大学 | Radar and communication integrated cooperative detection method and apparatus based on beam power distribution |
| US20220057483A1 (en) * | 2019-07-25 | 2022-02-24 | Beijing University Of Posts And Telecommunications | Radar and communication integrated cooperative detection method and apparatus based on beam power distribution |
| US11703564B2 (en) * | 2019-07-25 | 2023-07-18 | Beijing University Of Posts And Telecommunications | Radar and communication integrated cooperative detection method and apparatus based on beam power distribution |
| CN111337885A (en) * | 2020-02-18 | 2020-06-26 | 南京航空航天大学 | Radar and communication combined system radio frequency stealth performance optimization method |
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Application publication date: 20181116 |