CN112118621B - Airborne radar communication integrated system radiation power optimization design method - Google Patents

Airborne radar communication integrated system radiation power optimization design method Download PDF

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CN112118621B
CN112118621B CN202010804825.4A CN202010804825A CN112118621B CN 112118621 B CN112118621 B CN 112118621B CN 202010804825 A CN202010804825 A CN 202010804825A CN 112118621 B CN112118621 B CN 112118621B
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radiation power
integrated system
airborne radar
communication integrated
tracking error
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CN112118621A (en
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时晨光
丁琳涛
王奕杰
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Nanjing University of Aeronautics and Astronautics
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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/282—Transmitters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/38—Jamming means, e.g. producing false echoes
    • 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 radiation power optimization design method of an airborne radar communication integrated system, which comprises the steps of S1, determining the airborne radar communication integrated system, and simultaneously transmitting a plurality of beams to complete the functions of target tracking and communication data transmission; s2, constructing a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system, and constructing a data transmission rate expression representing the communication performance of the airborne radar communication integrated system; s3, establishing an airborne radar communication integrated system radiation power optimization design model; and S4, solving the airborne radar communication integrated system radiation power optimization design model established in the step S3. The method reduces the consumption of radio frequency radiation resources of the airborne radar communication integrated system, and effectively improves the radio frequency stealth performance of the airborne radar communication integrated system.

Description

Airborne radar communication integrated system radiation power optimization design method
Technical Field
The invention relates to a radar signal processing technology, in particular to a radiation power optimization design method of an airborne radar communication integrated system.
Background
In the present battlefield environment, any single electronic equipment or simple superposition of multiple electronic equipment is difficult to deal with the comprehensive high-tech electronic weapon of the enemy, and effective and reliable detection tracking, data communication and interference suppression are difficult to ensure. Therefore, it is necessary to combine different kinds of electronic devices with different purposes with the modern advanced electronic information technology and microwave photon technology to form a comprehensive electro-optical information technology system. With the rapid development of information technology and weapon attack and defense systems, in order to meet the needs of present and future war, the airborne radar communication integrated system is produced. With the airborne radar communication integrated system, not only can dynamic information of different combat areas be collected and analyzed at any time, but also combat instructions can be safely and accurately transmitted and targets can be tracked, so that firepower striking can be carried out on enemy targets from any place.
With the development of technology, the threat of the battle platform is increasing, and the working electromagnetic environment is becoming more and more complex. In order to improve the battlefield viability of an airborne radar communication integrated system, radio frequency stealth technology is receiving more and more attention. The radio frequency stealth technology is a target characteristic reduction control technology of an airborne active electronic device radio frequency radiation signal, and aims to increase the difficulty of interception, sorting and identification of an enemy passive detection system and realize the stealth of the airborne active electronic device radio frequency radiation signal relative to the enemy passive detection system.
However, no method for optimally designing the radiation power of the airborne radar communication integrated system exists in the prior art.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a radiation power optimization design method of an airborne radar communication integrated system, which reduces the consumption of radio frequency radiation resources of the airborne radar communication integrated system and effectively improves the radio frequency stealth performance of the airborne radar communication integrated system.
The technical scheme is as follows: the invention discloses a radiation power optimization design method of an airborne radar communication integrated system, which comprises the following steps:
s1, determining an airborne radar communication integrated system, and simultaneously transmitting a plurality of beams to complete the functions of target tracking and communication data transmission;
s2, constructing a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system, and constructing a data transmission rate expression representing the communication performance of the airborne radar communication integrated system;
s3, establishing an airborne radar communication integrated system radiation power optimization design model;
and S4, solving the airborne radar communication integrated system radiation power optimization design model established in the step S3.
Further, in step S2, a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system is constructed, specifically:
distance tracking error deltaRExpressed as:
Figure BDA0002628713260000021
wherein c is the speed of light, B0For equivalent noise bandwidth, frFor the pulse repetition frequency, T, of the radar signaldFor radar signal dwell time, PrFor the radiation power of radar signals, N0Is the noise power;
angle tracking error deltaθExpressed as:
Figure BDA0002628713260000022
wherein, theta3Is 3dB beam width, KAMτ is the radar signal pulse width, for the angular sensitivity function slope.
Further, in step S2, a data transmission rate expression representing the communication performance of the airborne radar communication integrated system is constructed, specifically:
the data transmission rate expression is:
Figure BDA0002628713260000023
where B is the channel bandwidth, PcRadiating power for the communication signal.
Further, step S3 is specifically:
tracking error threshold gamma according to given distanceRAngle tracking error threshold gammaθData transfer rate threshold gammacEstablishing an optimized design model of the radiation power of the airborne radar communication integrated system, as follows:
Figure BDA0002628713260000031
wherein, Pr maxUpper limit of radiation power of radar signal, Pc maxIs an upper limit of the radiated power of the communication signal.
Further, step S4 is specifically:
known from a first constraint condition in an airborne radar communication integrated system radiation power optimization design model, in order to meet a given distance tracking error threshold, the following are provided:
Figure BDA0002628713260000032
through algebraic operation, the radiation power of the radar signal needs to satisfy the following formula:
Figure BDA0002628713260000033
according to the second constraint condition in the radiation power optimization design model of the airborne radar communication integrated system, in order to meet the given angle tracking error threshold, the following conditions are provided:
Figure BDA0002628713260000034
through algebraic operation, the radiation power of the radar signal needs to satisfy the following formula:
Figure BDA0002628713260000035
combination of formula (5) and formula (7) and upper limit P of radar signal radiation powerr maxThe optimal value of the radar signal radiation power satisfying the radiation power optimization design model of the airborne radar communication integrated system is as follows:
Figure BDA0002628713260000036
wherein, (.)*Represents the optimal value of a parameter, min [ a, b, …]The expression takes the minimum value of a, b, …;
according to the third constraint condition in the radiation power optimization design model of the airborne radar communication integrated system, in order to meet the given data transmission rate threshold, the following conditions are provided:
Figure BDA0002628713260000041
through algebraic operation, the communication signal radiation power needs to satisfy the following formula:
Figure BDA0002628713260000042
combination formula (11) and upper limit P of communication signal radiation powerc maxThe optimal value of the communication signal radiation power meeting the radiation power optimization design model of the airborne radar communication integrated system is as follows:
Figure BDA0002628713260000043
has the advantages that: compared with the prior art, the method and the device can meet the preset target tracking performance requirement and the preset communication performance requirement, and effectively reduce the radio frequency radiation resource consumption of the airborne radar communication integrated system, so that the radio frequency stealth performance of the airborne radar communication integrated system is improved. The reason for the advantage is that the invention adopts an optimization design method for the radiation power of the airborne radar communication integrated system, and the method establishes an optimization design model for the radiation power of the airborne radar communication integrated system by taking the requirement of a given distance tracking error threshold, an angle tracking error threshold, a data transmission rate threshold and radiation power resources as constraint conditions and the minimization of the total radiation power of the airborne radar communication integrated system as an optimization target. By solving the optimization model, the radar signal radiation power and the communication signal radiation power which enable the total radiation power of the airborne radar communication integrated system to be minimum are obtained as an optimal solution under the condition that the given distance tracking error threshold, the given angle tracking error threshold, the given data transmission rate threshold and the given radiation power resource are met, and therefore the radio frequency stealth performance of the airborne radar communication integrated system is effectively improved.
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FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The invention provides a radiation power optimization design method of an airborne radar communication integrated system based on practical engineering application requirements, reduces the consumption of radio frequency radiation resources of the airborne radar communication integrated system, and effectively improves the radio frequency stealth performance of the airborne radar communication integrated system. First, consider an integrated airborne radar communication system that can perform target tracking and communication data transmission functions by transmitting multiple beams simultaneously. And secondly, constructing a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system, and constructing a data transmission rate expression representing the communication performance of the airborne radar communication integrated system. And thirdly, establishing a radiation power optimization design model of the airborne radar communication integrated system by taking the distance tracking error threshold, the angle tracking error threshold, the data transmission rate threshold and the radiation power resource which meet the given constraint conditions and taking the total radiation power of the airborne radar communication integrated system as an optimization target, so that the consumption of the radio frequency radiation resource of the airborne radar communication integrated system is reduced, and the radio frequency stealth performance of the airborne radar communication integrated system is improved.
As shown in fig. 1, the method for optimally designing the radiation power of the airborne radar communication integrated system of the present invention includes the following steps:
s1, considering an airborne radar communication integrated system, wherein the system can simultaneously transmit a plurality of beams to complete the functions of target tracking and communication data transmission;
s2, constructing a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system, and constructing a data transmission rate expression representing the communication performance of the airborne radar communication integrated system; as follows:
distance tracking error deltaRCan be expressed as:
Figure BDA0002628713260000051
wherein c is the speed of light, B0For equivalent noise bandwidth, frFor the pulse repetition frequency, T, of the radar signaldFor radar signal dwell time, PrFor the radiation power of radar signals, N0Is the noise power.
Angle tracking error deltaθCan be expressed as:
Figure BDA0002628713260000052
in the formula, theta3Is 3dB beam width, KAMIs the angular sensitivity function slope (usually 1.57) and tau is the radar signal pulse width.
The data transmission rate expression is:
Figure BDA0002628713260000053
where B is the channel bandwidth, PcRadiating power for the communication signal.
S3, establishing an airborne radar communication integrated system radiation power optimization design model;
tracking error threshold gamma according to given distanceRAngle tracking error threshold gammaθData transfer rate threshold gammacEstablishing an optimized design model of the radiation power of the airborne radar communication integrated system, for exampleShown below:
Figure BDA0002628713260000061
wherein, Pr maxUpper limit of radiation power of radar signal, Pc maxIs an upper limit of the radiated power of the communication signal.
S4, solving the model (4);
as can be seen from the first constraint in the model (4), to satisfy a given distance tracking error threshold, there are:
Figure BDA0002628713260000062
through algebraic operation, the radiation power of the radar signal needs to satisfy the following formula:
Figure BDA0002628713260000063
from the second constraint in the model (4), to satisfy a given angular tracking error threshold, there are:
Figure BDA0002628713260000064
through algebraic operation, the radiation power of the radar signal needs to satisfy the following formula:
Figure BDA0002628713260000065
combination of formula (5) and formula (7) and upper limit P of radar signal radiation powerr maxAnd the optimal value of the radiation power of the radar signal meeting the model (4) is as follows:
Figure BDA0002628713260000066
wherein, (.)*Represents the optimal value of a parameter, min [ a, b, …]The expression takes the minimum value of a, b, ….
As can be seen from the third constraint in the model (4), to satisfy a given data transmission rate threshold, there are:
Figure BDA0002628713260000071
through algebraic operation, the communication signal radiation power needs to satisfy the following formula:
Figure BDA0002628713260000072
combination formula (11) and upper limit P of communication signal radiation powerc maxAnd the optimal value of the communication signal radiation power meeting the model (4) is as follows:
Figure BDA0002628713260000073
the working principle and the working process of the invention are as follows:
the invention firstly considers an airborne radar communication integrated system which can complete the functions of target tracking and communication data transmission by simultaneously transmitting a plurality of beams. And secondly, constructing a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system, and constructing a data transmission rate expression representing the communication performance of the airborne radar communication integrated system. And thirdly, establishing a radiation power optimization design model of the airborne radar communication integrated system by taking the minimum total radiation power of the airborne radar communication integrated system as an optimization target and meeting given distance tracking error threshold, angle tracking error threshold, data transmission rate threshold and radiation power resource as constraint conditions. And finally, solving the established optimization model through algebraic operation. By solving the optimization model, the tracking at the given distance is obtainedThe radar signal radiation power P which enables the total radiation power of the airborne radar communication integrated system to be minimum under the conditions of the error threshold, the angle tracking error threshold, the data transmission rate threshold and the radiation power resourcer *With communication signal radiation power Pc *And obtaining the optimal radiation power design result of the airborne radar communication integrated system according with the constraint condition as the optimal solution.
The invention is characterized in that:
1. aiming at the airborne radar communication integrated system, a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system is constructed, and a data transmission rate expression representing the communication performance of the airborne radar communication integrated system is constructed.
2. And establishing a radiation power optimization design model of the airborne radar communication integrated system by taking the condition of meeting the given distance tracking error threshold, angle tracking error threshold, data transmission rate threshold and radiation power resource as constraint conditions and taking the total radiation power of the airborne radar communication integrated system as an optimization target. By solving the optimization model, the radar signal radiation power P which enables the total radiation power of the airborne radar communication integrated system to be minimum under the conditions of meeting the given distance tracking error threshold, angle tracking error threshold, data transmission rate threshold and radiation power resource is obtainedr *With communication signal radiation power Pc *As the optimal solution.

Claims (2)

1. The method for optimally designing the radiation power of the airborne radar communication integrated system is characterized by comprising the following steps of:
s1, determining an airborne radar communication integrated system, and simultaneously transmitting a plurality of beams to complete the functions of target tracking and communication data transmission;
s2, constructing a distance tracking error and angle tracking error expression representing the target tracking performance of the airborne radar communication integrated system, and constructing a data transmission rate expression representing the communication performance of the airborne radar communication integrated system; the method specifically comprises the following steps:
distance tracking error deltaRExpressed as:
Figure FDA0003262959130000011
wherein c is the speed of light, B0For equivalent noise bandwidth, frFor the pulse repetition frequency, T, of the radar signaldFor radar signal dwell time, PrFor the radiation power of radar signals, N0Is the noise power;
angle tracking error deltaθExpressed as:
Figure FDA0003262959130000012
wherein, theta3Is 3dB beam width, KAMIs the slope of the angular sensitivity function, and tau is the pulse width of the radar signal;
data transmission rate RcThe expression is as follows:
Figure FDA0003262959130000013
where B is the channel bandwidth, PcFor the radiation power of communication signals, N0Is the noise power;
s3, establishing an airborne radar communication integrated system radiation power optimization design model; the method specifically comprises the following steps:
tracking error threshold gamma according to given distanceRAngle tracking error threshold gammaθData transfer rate threshold gammacEstablishing an optimized design model of the radiation power of the airborne radar communication integrated system, as follows:
Figure FDA0003262959130000021
wherein, PrFor the radiation power of radar signals, PcFor the radiation power of communication signals, deltaRFor distance tracking error, δθFor angle tracking error, RcIn order to be able to determine the data transmission rate,
Figure FDA0003262959130000022
for the upper limit of the radiated power of the radar signal,
Figure FDA0003262959130000023
an upper limit for the radiated power of the communication signal;
and S4, solving the airborne radar communication integrated system radiation power optimization design model established in the step S3.
2. The method for optimally designing the radiant power of the airborne radar communication integrated system according to claim 1, wherein the step S4 is specifically as follows:
known from a first constraint condition in an airborne radar communication integrated system radiation power optimization design model, in order to meet a given distance tracking error threshold, the following are provided:
Figure FDA0003262959130000024
wherein c is the speed of light, B0For equivalent noise bandwidth, frFor the pulse repetition frequency, T, of the radar signaldFor radar signal dwell time, PrFor the radiation power of radar signals, N0Is the noise power, γRTracking an error threshold for a given range;
through algebraic operation, the radiation power of the radar signal needs to satisfy the following formula:
Figure FDA0003262959130000025
according to the second constraint condition in the radiation power optimization design model of the airborne radar communication integrated system, in order to meet the given angle tracking error threshold, the following conditions are provided:
Figure FDA0003262959130000026
wherein, theta3Is 3dB beam width, KAMFor the slope of the angular sensitivity function, tau is the pulse width of the radar signal, gammaθIs an angle tracking error threshold;
through algebraic operation, the radiation power of the radar signal needs to satisfy the following formula:
Figure FDA0003262959130000031
combination of formula (5) and formula (7) and upper limit of radar signal radiation power
Figure FDA0003262959130000032
Radar signal radiation power optimal value meeting airborne radar communication integrated system radiation power optimization design model
Figure FDA0003262959130000033
Comprises the following steps:
Figure FDA0003262959130000034
wherein, (.)*Represents the optimal value of a parameter, min [ a, b, …]The expression takes the minimum value of a, b, …;
according to the third constraint condition in the radiation power optimization design model of the airborne radar communication integrated system, in order to meet the given data transmission rate threshold, the following conditions are provided:
Figure FDA0003262959130000035
where B is the channel bandwidth, PcFor the radiation power of communication signals, N0Is the noise power, γcIs a data transmission rate threshold;
through algebraic operation, the communication signal radiation power needs to satisfy the following formula:
Figure FDA0003262959130000036
combination (11) and upper limit of communication signal radiation power
Figure FDA0003262959130000037
Communication signal radiation power optimal value meeting airborne radar communication integrated system radiation power optimization design model
Figure FDA0003262959130000038
Comprises the following steps:
Figure FDA0003262959130000039
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