CN-121978632-A - Phased array radar resource scheduling method capable of adaptively tracking time interval

CN121978632ACN 121978632 ACN121978632 ACN 121978632ACN-121978632-A

Abstract

A phased array radar resource scheduling method, a phased array radar resource scheduling device, electronic equipment and a phased array radar resource scheduling storage medium relate to the technical field of radar data processing and resource scheduling. Setting a group of standard tracking time interval list, calculating state prediction covariance matrixes at different time intervals by using a Kalman filter, and obtaining the optimal tracking time interval by self-adaptive adjustment. According to the radar event priority, the events in each beam request list are arranged into an execution list, and the high-priority events are executed according to the optimal time interval. Finally, the beam request list is updated by removing the processed requests and supplementing new requests, and the scheduling plan is dynamically adjusted and optimized according to the actual execution conditions. The invention solves the problems of unreasonable resource allocation and inflexible response in the prior art.

Inventors

LIU JUNJIE
GAO ZIYANG
Qin Jingshu
BAI JIAN
ZHAO CHEN
JIA JIANCHAO

Assignees

北京遥感设备研究所

Dates

Publication Date: 20260505
Application Date: 20251226

Claims (10)

1. A phased array radar resource scheduling method for adaptively tracking a time interval, the method comprising: Determining an airspace area according to the monitoring range and the beam width of a radar, defining a scheduling period and an airspace monitoring frame period of a radar event, and initializing a beam request list of the radar event, wherein the beam request list comprises a tracking beam request list, a confirmation beam request list, a tracking losing beam request list and a searching beam request list; Setting a group of standard tracking time interval lists according to the scheduling period of the radar event, calculating state prediction covariance matrixes at different time intervals by using a filter, and carrying out self-adaptive adjustment on the tracking time interval lists according to the state prediction covariance matrixes to obtain optimal tracking time intervals; Defining the priority order of the radar events, arranging the events in each beam request list into a current next period execution event list according to the priority order, and executing the radar events according to the optimal tracking time interval, wherein the radar events comprise tracking events, confirmation events, missed events and search events; After all radar events are executed in the current scheduling period, the beam request list is updated by removing the processed requests and supplementing new requests, and the scheduling plan of the current next period is dynamically adjusted and optimized according to the actual execution condition and the radar resource use condition.
2. The phased array radar resource scheduling method of adaptive tracking time interval according to claim 1, wherein the determining a airspace region according to a monitoring range and a beam width of a radar, and defining a scheduling period and an airspace monitoring frame period of a radar event, initializing a beam request list of the radar event, comprises: calculating a monitoring airspace range needing to be covered comprehensively according to a monitoring range parameter and a beam width value of a radar, and determining a scheduling period of a radar event and an airspace monitoring frame period, wherein the scheduling period of the radar event refers to period duration of radar event scheduling and execution; The method comprises the steps of initializing a beam request list of radar events, wherein the beam request list is used for recording beam requests needing to execute searching tasks, the tracking beam request list is used for storing beam requests needing to track targets, the confirmation beam request list is used for recording beam requests needing to confirm target states, and the tracking losing beam request list is used for recording beam requests losing track targets.
3. The phased array radar resource scheduling method of adaptive tracking time intervals of claim 1, wherein the setting a standard set of tracking time interval lists according to a scheduling period of the radar event comprises: Taking the integral multiple time length of the scheduling period of the radar event as each time interval option in the tracking time interval list, and arranging the time interval options in order from small to large to obtain a group of standard tracking time interval list, wherein the tracking time interval list comprises a plurality of time interval options of radar tracking targets.
4. The phased array radar resource scheduling method of adaptive tracking time intervals according to claim 1, wherein the calculating a state prediction covariance matrix at different time intervals using a filter, and performing adaptive adjustment on the tracking time interval list according to the state prediction covariance matrix to obtain an optimal tracking time interval, comprises: A Kalman filter is adopted to respectively calculate state prediction covariance matrixes of the targets at different time intervals aiming at each time interval option in the tracking time interval list, wherein the state prediction covariance matrixes are used for reflecting the uncertainty degree of target state prediction; And comparing each state prediction covariance matrix with a threshold value by taking a linear function of the measurement noise covariance as the threshold value, and selecting a maximum time interval which does not exceed the set threshold value from the tracking time interval list as an optimal tracking time interval.
5. The adaptive tracking time interval phased array radar resource scheduling method of claim 1, wherein said defining a priority order of said radar events, scheduling events in each of said beam request lists into a current next-cycle execution event list according to said priority order, executing said radar events according to said optimal tracking time interval, comprises: Determining that the priority order of the radar event is a tracking event, a confirmation event, a non-tracking event and a search event from high to low in sequence, and arranging the event which accords with the optimal tracking time interval in a beam request list of the tracking event to a current next period execution event list; the beam request list of the confirmation event and the beam request list of the missed event are all put into a current next period execution event list, and search events are put into the current next period execution event list in sequence until the maximum beam request number of the current next period is reached; And executing the tracking event with the highest priority according to the optimal tracking time interval according to the priority sequence, removing the processed request from the corresponding event list after the execution, and supplementing the new related request into each beam request list of the corresponding radar event.
6. The phased array radar resource scheduling method of adaptive tracking time interval as claimed in claim 1, wherein said updating each of said beam request lists by removing processed requests and supplementing new requests, dynamically adjusting and optimizing a scheduling plan of a current next cycle according to actual execution conditions and radar resource usage conditions, comprises: Adding a first beam request in a beam request list corresponding to the tracking event to a current next-period execution event list, and removing the first beam request from the tracking event list; adding the beam request corresponding to the confirmation event to a current next-period execution event list, deleting the beam request from the confirmation event list, transferring the beam request corresponding to the missed event to the current next-period execution event list, and deleting the beam request from the missed event list; and adding the beam requests corresponding to the search events to a current next-period execution event list in sequence until the maximum number of the beam requests allowed by the current next period is reached, and sequentially transferring the added beam requests from the head part to the tail part in the beam request list corresponding to the search events.
7. The phased array radar resource scheduling method of adaptive tracking time intervals of claim 1, the method further comprising: When the search beam corresponding to the search event detects a trace point and the signal to noise ratio reaches a detection threshold, starting a 2/3 logic method to determine whether track initiation can be completed, and if so, converting the search event into a confirmation event; When the probability that the confirmation beam corresponding to the confirmation event detects the target is larger than a set value, a target motion track is established, kalman filter parameters are initialized, and the confirmation event is converted into a tracking event; And expanding a search range when the tracking beam corresponding to the tracking event continuously detects the target twice, converting the tracking event into a non-tracking event if the target is detected again and track association is completed, and updating the target track and Kalman filter parameters.
8. A phased array radar resource scheduling device for adaptively tracking a time interval, the device comprising: The system comprises an initialization setting module, a processing module and a processing module, wherein the initialization setting module is used for determining an airspace area according to the monitoring range and the beam width of a radar, defining the scheduling period and the airspace monitoring frame period of a radar event and initializing a beam request list of the radar event, wherein the beam request list comprises a tracking beam request list, a confirmation beam request list, a tracking-losing beam request list and a searching beam request list; The interval adjustment module is used for setting a group of standard tracking time interval lists according to the scheduling period of the radar event, calculating state prediction covariance matrixes at different time intervals by using a filter, and carrying out self-adaptive adjustment on the tracking time interval lists according to the state prediction covariance matrixes to obtain optimal tracking time intervals; The resource scheduling module is used for defining the priority order of the radar events, and arranging the events in each beam request list into a current next-period execution event list according to the priority order and executing the radar events according to the optimal tracking time interval; And the list optimization module is used for dynamically adjusting and optimizing the scheduling plan of the current next period according to the actual execution condition and the radar resource use condition by removing the processed request and supplementing the new request to update each beam request list after all radar events are executed in the current scheduling period.
9. An electronic device comprising at least one processor and at least one memory, wherein, The memory has computer readable instructions stored thereon; The computer readable instructions, executed by one or more of the processors, cause an electronic device to implement the phased array radar resource scheduling method of adaptive tracking time intervals of any of claims 1-7.
10. A storage medium having stored thereon computer readable instructions executable by one or more processors to implement the adaptive tracking time interval phased array radar resource scheduling method of any of claims 1 to 7.

Description

Phased array radar resource scheduling method capable of adaptively tracking time interval Technical Field The present invention relates to the field of radar data processing and resource scheduling technologies, and in particular, to a phased array radar resource scheduling method and apparatus for adaptively tracking a time interval, an electronic device, and a storage medium. Background With the continuous progress of radar technology, phased array radar exhibits powerful capabilities in the fields of target search and multi-target tracking due to its flexible beam pointing and customizable scanning patterns. However, phased array radar resources are limited, and a need to compromise between routine searching of a surveillance airspace and stable tracking of a found target within a specified time poses a serious challenge to resource scheduling. The traditional phased array radar resource scheduling method with the self-adaptive tracking time interval often adopts a fixed or empirical tracking time interval, and is difficult to flexibly adjust according to the dynamic characteristics of the target and the radar resource condition. When the motion state of the target changes or the radar load is increased, the fixed time interval may cause unreasonable resource allocation, and the tracking performance and the searching efficiency are affected. In addition, the traditional method lacks a dynamic adjustment mechanism, and is difficult to realize optimal allocation of resources in complex and changeable airspace environments. This not only limits the radar's ability to quickly respond to bursty targets, but also affects the flexibility and efficiency of overall task execution. Therefore, there is an urgent need for a phased array radar resource scheduling method capable of adaptively adjusting a tracking time interval, optimizing resource allocation, and improving radar task execution efficiency and flexibility. Disclosure of Invention The embodiment of the invention provides a phased array radar resource scheduling method capable of adaptively tracking a time interval, which aims to solve the problems that the resource allocation is unreasonable, the tracking and searching efficiency is affected, a dynamic priority adjustment mechanism is lacked, and the radar response speed and the task execution flexibility are limited in the prior art. The technical scheme is as follows: According to one aspect of the invention, the phased array radar resource scheduling method of the adaptive tracking time interval comprises the steps of determining an airspace area according to the monitoring range and the beam width of a radar, defining the scheduling period and the airspace monitoring frame period of radar events, initializing a beam request list of the radar events, wherein the beam request list comprises a tracking beam request list, a confirmation beam request list, a missed beam request list and a search beam request list, setting a group of standard tracking time interval lists according to the scheduling period of the radar events, calculating a state prediction covariance matrix under different time intervals by using a filter, adaptively adjusting the tracking time interval list according to the state prediction covariance matrix to obtain an optimal tracking time interval, defining the priority order of the radar events, arranging the events in the beam request lists into a current next period execution event list according to the priority order, executing the radar events according to the optimal tracking time interval, wherein the radar events comprise tracking events, confirmation events, missed beam events and search events, executing all radar events in the current scheduling period, and after the radar events are executed in the current scheduling period, requesting to be updated and carrying out the current scheduling request and carrying out the dynamic adjustment according to the updated scheduling request and the actual scheduling request. In one embodiment, an airspace area is determined according to a monitoring range and a beam width of a radar, a scheduling period and an airspace monitoring frame period of the radar event are defined, a beam request list of the radar event is initialized, the beam request list is used for storing beam requests needing to be subjected to searching tasks, the beam request list is used for storing the beam requests needing to be subjected to tracking targets, the beam request needing to be subjected to full coverage is calculated according to the monitoring range parameters and the beam width values of the radar, the scheduling period and the airspace monitoring frame period of the radar event are determined, the scheduling period of the radar event refers to the period duration of the radar event, the airspace monitoring frame period refers to the period of the complete monitoring scanning of the monitoring airspace, the beam request list of the radar event is in