Radar radiation power distribution method with time-varying available power

Abstract

The invention discloses an available power time-varying radar radiation power distribution method. The method comprises the following steps: acquiring the currently available total power of a radar in real time; determining available radiation power of the radar from the currently available total power; according to the pulse width, the pulse repetition period and the task execution data rate of each radar task in the current scheduling interval, calculating the average power of each task; in the current working mode, the priority of each task is analyzed; gradually adjusting the pulse width or the data rate according to the task priority; the tasks to be executed by the radar are arranged according to the scheduling interval, the power consumption in the current scheduling interval is counted in real time, and if the instantaneous power exceeds the available radiation power, the low-priority tasks are added into a delay list; and calculating the detection capability of a specific radar cross section (RCS) target under the current power in real time. According to the invention, available power fluctuation can be responded in real time, radar emission resources are dynamically optimized, and the execution success rate of high-priority tasks is preferentially guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of radar system technology, and in particular relates to a radar radiation power allocation method with time-varying available power. Background Technology

[0002] In actual operation, power supply shortages can occur due to generator failures, sudden high energy consumption in other systems, and sudden changes in propulsion system power demands. If radar resources are still allocated at rated power under these circumstances, it can lead to anything from a decrease in radar performance to triggering system overload protection and complete loss of operational capability. Even more seriously, such power shortages often occur very suddenly, directly impacting the system's operational capacity.

[0003] To address this issue, a solution needs to be implemented from three levels: First, establish a real-time power monitoring system to accurately obtain the instantaneous power supply capacity of the power grid; second, develop a dynamic task priority evaluation algorithm to adjust the radar operating mode according to task importance; and finally, design an adaptive power allocation strategy to optimize resource utilization while ensuring core functions. This closed-loop adjustment mechanism can significantly improve the operational resilience of radar in power-constrained environments. The implementation of this technology requires breakthroughs in several key technologies, including high-precision power prediction models, low-latency resource scheduling algorithms, and multi-task integrated control architectures. In May 2023, the related paper "Research on Multi-Carrier Signal Power Allocation Algorithm for Radar-Communication Integration" proposed algorithms such as Triple Alternating Maximization (TAM) to solve the joint power allocation problem in scenarios where radar and communication spectrums coexist. In 2017, researchers at Xi'an University of Electronic Science and Technology, in their paper "Research on Power Allocation for Distributed Radar Network Target Positioning," proposed a power allocation algorithm based on prior information fed back from the receiving station to improve single-target and multi-target positioning performance for the transmission resource optimization problem of distributed MIMO network radar. In May 2025, the paper "Research on Resource Allocation Algorithm in Cognitive Radar" proposed: combining the closed-loop feedback characteristics of cognitive radar, an adaptive allocation strategy for transmit power and detection threshold was designed to optimize resource utilization efficiency in single / multi-target tracking scenarios.

[0004] However, current research focuses on resource and power allocation for radar missions when the radar is operating at its rated power with sufficient power. No research has been found on mission scheduling under under-power conditions in the published literature. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art. To achieve this purpose, this invention provides a radar radiated power allocation method with time-varying available power. The method includes:

[0006] S1: Real-time acquisition of the total available power of the radar;

[0007] S2: Determine the radar's usable radiated power from the currently available total power by successively subtracting equipment power, heat dissipation power, and loss power;

[0008] Among them, the equipment power, heat dissipation power and loss power are obtained by statistics and calculations of the radar in standby and operating states;

[0009] S3: Calculate the average power of each radar task based on the pulse width, pulse repetition period, and data rate of each task within the current scheduling interval;

[0010] S4: In the current working mode, analyze the priority of each task; the priority is set and sorted based on historical data and the nature of the current task.

[0011] S5: Based on task priority, start with low priority tasks and gradually adjust the pulse width or data rate until the total power consumption of all tasks does not exceed the available radiated power.

[0012] S6: Arrange the tasks to be performed by the radar according to the scheduling interval, and count the power consumption in the current scheduling interval in real time. If the instantaneous power exceeds the available radiated power, add the low priority tasks to the delay list.

[0013] S7: Based on the pulse width and radar equations of each mission, calculate in real time the detection capability of a target with a specific radar cross-section (RCS) under the current power, and provide feedback on the evaluation results.

[0014] Furthermore, in step S1, the total power obtained in real time includes the generator output power minus the remaining power after deducting the power consumption of other devices.

[0015] Furthermore, the device power includes the total power consumption of the equipment, including the radar signal processing unit, control unit, and power amplifier.

[0016] Furthermore, the heat dissipation power includes the power consumption of the cooling system, including fans, liquid cooling, and air conditioning.

[0017] Furthermore, the power loss includes energy losses from cables, connectors, power amplifiers, and other sources.

[0018] Furthermore, the method for determining the average power is as follows:

[0019]

[0020] in, Average power; Peak power; It is the pulse width; : Pulse repetition period; : This refers to the tracking data rate.

[0021] Furthermore, tasks in the delay list are preferentially rescheduled when power resources are sufficient.

[0022] Furthermore, the detection capability is determined based on the current pulse width, transmit power, target RCS, and radar equations:

[0023]

[0024] In the formula Radar transmit power; Pulse width; Antenna gain; Operating wavelength; Target RCS; Target distance; Boltzmann constant; Equivalent temperature; Noise figure; Loss factor.

[0025] Furthermore, the assessment results are displayed to the commander in real time in the form of graphics, numerical values, or alarms.

[0026] Furthermore, in step (4), the data rate and pulse width are reduced. If the power limit is still not met when the data rate is reduced to 60%, the corresponding task is deleted.

[0027] The significant advancement of this invention compared to existing technologies lies in:

[0028] The core of this invention lies in its real-time response to fluctuations in available power, dynamic optimization of radar transmission resources, and prioritization of the success rate of high-priority tasks. The method establishes a closed-loop control mechanism by real-time monitoring and precise calculation of the total power currently available for radar radiation, and quantitatively assessing the average power demand of each radar task within the current scheduling interval based on task parameters. On this basis, intelligent power allocation is implemented—employing a flexible degradation strategy based on task priority, starting with the lowest priority task, gradually compressing its pulse width or reducing its data rate until the total power consumption of all tasks is controlled within the available radiation power limit. Simultaneously, real-time power over-limit protection is set; if the instantaneous power demand exceeds the limit, the corresponding low-priority task is included in the delayed execution queue to prevent system overload. This invention enables dynamic and adaptive power scheduling when radar power is limited, ensuring that critical tasks are completed first.

[0029] To more clearly illustrate the functional characteristics and structural parameters of the present invention, further explanation is provided below in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0030] Figure 1This is a flowchart of a radar radiated power allocation method with time-varying available power provided in an embodiment of this application. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides a radar radiated power allocation method with time-varying available power. In the event of a sudden generator failure supplying power to the radar, causing the available power to drop sharply to 60% of its normal value, the radar needs to simultaneously handle the following:

[0033] High-priority task: Target tracking (threat target RCS = 5m²)

[0034] Medium priority tasks: Surface search (small speedboat target RCS=0.1m²); Long-range search (220km)

[0035] Low priority task: Weather monitoring

[0036] The power scheduling example is executed step by step as follows:

[0037] S1: Real-time acquisition of total available power:

[0038] Input: The power grid monitoring system reports that the total available power of the radar is currently 80kW (normally 150kW).

[0039] Technical details: Remaining power data is collected in real time through the CAN bus interface of the energy management system (EMS), with a sampling period of ≤100ms;

[0040] S2: Calculate available radiated power:

[0041] Deductions:

[0042] Equipment power: Information processing cabinet (8kW) + control terminal (2kW) + T / R component bias (5kW) = 15kW;

[0043] Heat dissipation power: Liquid cooling pump (6kW) + air conditioner (4kW) = 10kW;

[0044] Power loss: Waveguide transmission loss (1.2kW) + power amplifier efficiency loss (1.8kW) = 3kW;

[0045] Output: Available radiated power = 80 - (15 + 10 + 3) = 52 kW;

[0046] S3: Average power consumption of the computation task:

[0047] Target tracking task parameters: Pavg = peak power (50kW) × pulse period (1ms) pulse width (100μs) × data rate (10Hz) = 5kW;

[0048] Other task calculations:

[0049]

[0050] Total demand: 5 + 9.5 + 10 + 10.5 + 8 = 43 kW (not exceeding the limit);

[0051] S4: Dynamically demote low-priority tasks:

[0052] Conflict event: Added long-range incoming target tracking mission (requires 13kW), total requirement rises to 56kW > 52kW;

[0053] Downgrade process:

[0054] Identify the lowest priority task: meteorological monitoring (priority L3);

[0055] Reduced data rate: from 2Hz to 1.2Hz (a 40% reduction), power consumption reduced to 4.8kW;

[0056] Still exceeds the limit → Delete the task (if the rule of deleting is triggered, it will be met);

[0057] Second adjustment:

[0058] The pulse width for the sea surface search mission was reduced from 50μs to 40μs (a 20% decrease), and the power consumption was reduced to 8.4kW.

[0059] Final total power consumption: 51.9kW < 52kW;

[0060] S5: Instantaneous power monitoring and delay processing:

[0061] Emergency Scenario: The target suddenly maneuvers, and the tracking mission's power instantly surges to 60kW (>52kW);

[0062] Response mechanism: Move the sea surface search task to the delay queue (record the expected restart time t+5s);

[0063] It provides an 8kW power reserve to ensure continuous tracking of maneuvering targets;

[0064] S6: Real-time assessment and feedback of search capabilities:

[0065] Key parameter comparison:

[0066]

[0067] Visual feedback:

[0068] Displays a ring map showing the detection range of remote search targets (red warning zone = 200km).

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radar radiated power allocation method with time-varying available power, characterized in that, The method includes: S1: Real-time acquisition of the total available power of the radar; S2: Determine the radar's usable radiated power from the currently available total power by successively subtracting equipment power, heat dissipation power, and loss power; Among them, the equipment power, heat dissipation power and loss power are obtained by statistics and calculations of the radar in standby and operating states; S3: Calculate the average power of each radar task based on the pulse width, pulse repetition period, and data rate of each task within the current scheduling interval; S4: In the current working mode, analyze the priority of each task; the priority is set and sorted based on historical data and the nature of the current task. S5: Based on task priority, start with low priority tasks and gradually adjust the pulse width or data rate until the total power consumption of all tasks does not exceed the available radiated power. S6: Arrange the tasks to be performed by the radar according to the scheduling interval, and count the power consumption in the current scheduling interval in real time. If the instantaneous power exceeds the available radiated power, add the low priority tasks to the delay list. S7: Based on the pulse width and radar equations of each mission, calculate in real time the detection capability of a target with a specific radar cross-section (RCS) under the current power, and provide feedback on the evaluation results.

2. The method according to claim 1, characterized in that, In step S1, the total power obtained in real time includes the generator output power minus the remaining power after deducting the power consumption of other devices.

3. The method according to claim 1, characterized in that, The power of the equipment includes the total power consumption of the radar signal processing unit, control unit, power amplifier, and other equipment.

4. The method according to claim 1, characterized in that, The heat dissipation power includes the power consumption of the cooling system, including fans, liquid cooling, and air conditioning.

5. The method according to claim 1, characterized in that, The power loss includes energy loss from cables, connectors, power amplifiers, and other components.

6. The method according to claim 1, characterized in that, The method for determining the average power is as follows: ； in, Average power; Peak power; It is the pulse width; : Pulse repetition period; : This refers to the tracking data rate.

7. The method according to claim 1, characterized in that, Tasks in the delay list are prioritized for rescheduling when power resources are sufficient.

8. The method according to claim 1, characterized in that, The detection capability is determined based on the current pulse width, transmit power, target RCS, and radar equations: ； In the formula Radar transmit power; Pulse width; Antenna gain; Operating wavelength; Target RCS; Target distance; Boltzmann constant; Equivalent temperature; Noise figure; Loss factor.

9. The method according to claim 1, characterized in that, The assessment results are displayed to the commander in real time in the form of graphics, numerical values, or alarms.

10. The method according to claim 1, characterized in that, In step S4, the data rate and pulse width are reduced. If the power limit is still not met when the data rate is reduced to 60%, the corresponding task is deleted.

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