Article(id=1286676567241765870, tenantId=1146029695717560320, journalId=1146119989267898375, issueId=1286676566465819629, articleNumber=null, orderNo=null, doi=10.7654/j.issn.2097-1974.20260308, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1767715200000, receivedDateStr=2026-01-07, revisedDate=1776268800000, revisedDateStr=2026-04-16, acceptedDate=null, acceptedDateStr=null, onlineDate=1784697198924, onlineDateStr=2026-07-22, pubDate=1782316800000, pubDateStr=2026-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1784697198924, onlineIssueDateStr=2026-07-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1784697198924, creator=13041195026, updateTime=1784697198924, updator=13041195026, issue=Issue{id=1286676566465819629, tenantId=1146029695717560320, journalId=1146119989267898375, year='2026', volume='', issue='3', pageStart='1', pageEnd='106', issueExtLink='null', onlineDate='null', pubDate='1782316800000', pubDateStr='2026-06-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1784697198739, creator='13041195026', updateTime=1784702152269, updator='13041195026', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1286697343156204129, tenantId=1146029695717560320, journalId=1146119989267898375, issueId=1286676566465819629, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1286697343156204130, tenantId=1146029695717560320, journalId=1146119989267898375, issueId=1286676566465819629, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=58, endPage=66, ext={EN=ArticleExt(id=1286676567468258287, articleId=1286676567241765870, tenantId=1146029695717560320, journalId=1146119989267898375, language=EN, title=A Self-Correcting Longest-Path DAG Scheduling Algorithm for Multicore Systems, columnId=1154057567841014343, journalTitle=Missiles and Space Vehicles, columnName=Guidance, Navigation and Control, runingTitle=null, highlight=null, articleAbstract=
As the master control computer of the Platform Inertial Navigation System (PINS) constitutes a hard real-time multicore embedded system, its control cycle directly impacts navigation accuracy. To address the issues of low resource utilization and constrained computing frequency resulting from the bin-packing problem inherent in traditional centralized partitioned scheduling, the Self-Correcting Longest-Path DAG Scheduling Algorithm (SLS) is proposed. The algorithm employs directed acyclic graphs (DAGs) to model complex inertial navigation tasks with precedence constraints, constructing a two-stage closed-loop framework of "static planning and dynamic correction". In the static phase, parallel tasks are greedily allocated across multiple cores based on longest-path priorities. The dynamic phase introduces a self-correcting mechanism that utilizes a weighted averaging method to continuously refine node execution time estimates, thereby mitigating the cumulative degradation of scheduling performance caused by worst-case execution time (WCET) estimation errors. Hardware-in-the-loop simulation experiments demonstrate that, compared with recent state-of-the-art algorithms in the inertial navigation field, the SLS algorithm significantly reduces task execution time, enhances multicore resource utilization and load balancing, and effectively improves the system accuracy and real-time performance of PINS.
, authors=Zhaochun XU
1, Yu YANG
2, Haifeng JIANG
1, authorsList=Zhaochun XU, Yu YANG, Haifeng JIANG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1286676571352182791, articleId=1286676567241765870, tenantId=1146029695717560320, journalId=1146119989267898375, language=CN, title=基于DAG的自校正最长路径多核调度算法, columnId=1154057567975232072, journalTitle=导弹与航天运载技术(中英文), columnName=导航、制导与控制, runingTitle=null, highlight=null, articleAbstract=
平台式惯性导航系统(Platform Inertial Navigation System,PINS)的主控计算机为硬实时多核嵌入式系统,其控制周期直接影响导航精度。针对传统集中式分区调度因装箱问题导致的资源利用率低、计算频率受限等问题,提出一种基于有向无环图(Directed Acyclic Graph,DAG)的自校正最长路径多核调度算法(Self-Correcting Longest-Path DAG Scheduling Algorithm,SLS)。该算法采用有向无环图对具有依赖关系的惯导任务进行建模,构建两阶段闭环结构:静态阶段基于最长路径优先级分配多核并行任务,动态阶段引入自校正机制,利用加权平均法持续修正节点执行时间估计,克服最坏情况执行时间估计误差对调度性能的累积影响。半实物仿真结果表明,相较于近几年惯导领域的其他算法,SLS算法缩短了任务执行时间,提高了多核资源利用率和负载均衡度,有效提升了PINS的系统精度与实时性能。
, authors=许兆淳
1, 杨雨
2, 姜海峰
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杨 雨(1967—),男,研究员,主要研究方向为惯性系统总体设计。
姜海峰(1987—),男,研究员,主要研究方向为惯性导航系统软件总体设计。
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DAG schematic, figureFileSmall=xRGErmxD6tdooyvRnZc+TA==, figureFileBig=923fKOZ1xnGAAE4t25PV7g==, tableContent=null), ArticleFig(id=1287123973976604883, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图1, caption=
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Core algorithm, figureFileSmall=YCT0hamE0zQq9WsnqRL/Xg==, figureFileBig=JbhNFWUHit6b0am4GRP7gQ==, tableContent=null), ArticleFig(id=1287123974152765653, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图2, caption=
算法核心, figureFileSmall=YCT0hamE0zQq9WsnqRL/Xg==, figureFileBig=JbhNFWUHit6b0am4GRP7gQ==, tableContent=null), ArticleFig(id=1287123974215680214, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.3, caption=
Negative feedback loop of SLS algorithm, figureFileSmall=4H9lTYxcbuN1K+vfJsDF+Q==, figureFileBig=FPE3rOaRtV/fx947bLnQzA==, tableContent=null), ArticleFig(id=1287123974282789079, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图3, caption=
SLS算法负反馈闭环, figureFileSmall=4H9lTYxcbuN1K+vfJsDF+Q==, figureFileBig=FPE3rOaRtV/fx947bLnQzA==, tableContent=null), ArticleFig(id=1287123974354092248, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.4, caption=
Parallel task represented as DAG, figureFileSmall=1YnkeK/D6jt/Y+a1Gg44MQ==, figureFileBig=S+8Fe0T9a4pkyc0wHW8yJA==, tableContent=null), ArticleFig(id=1287123974463144153, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图4, caption=
表示为DAG的并行任务, figureFileSmall=1YnkeK/D6jt/Y+a1Gg44MQ==, figureFileBig=S+8Fe0T9a4pkyc0wHW8yJA==, tableContent=null), ArticleFig(id=1287123974551224538, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.5, caption=
Path of the first calculation, figureFileSmall=rll6CNrfVtm4u2ccTSvbvA==, figureFileBig=nM4q16Mz/X6pocF/1a83jA==, tableContent=null), ArticleFig(id=1287123974618333403, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图5, caption=
第一次计算路径, figureFileSmall=rll6CNrfVtm4u2ccTSvbvA==, figureFileBig=nM4q16Mz/X6pocF/1a83jA==, tableContent=null), ArticleFig(id=1287123974698025180, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.6, caption=
DAG , figureFileSmall=7wpbL7IF4zO/jsMasmRkxA==, figureFileBig=ucdPSWq2pNFGzgOLToSnHQ==, tableContent=null), ArticleFig(id=1287123974765134045, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图6, caption=
DAG , figureFileSmall=7wpbL7IF4zO/jsMasmRkxA==, figureFileBig=ucdPSWq2pNFGzgOLToSnHQ==, tableContent=null), ArticleFig(id=1287123974836437214, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.7, caption=
Path of the second calculation, figureFileSmall=kFGRJM3eAHwQcq3AFGlWrg==, figureFileBig=sTqvtL1sK5lTFGs+aHZ9Yw==, tableContent=null), ArticleFig(id=1287123974907740383, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图7, caption=
第二次计算路径, figureFileSmall=kFGRJM3eAHwQcq3AFGlWrg==, figureFileBig=sTqvtL1sK5lTFGs+aHZ9Yw==, tableContent=null), ArticleFig(id=1287123974987432160, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.8, caption=
Running sequence of DAG , figureFileSmall=sS0DFy32u7bo5d0dokqW0Q==, figureFileBig=G+7bI/NhbCWKDA8NyPfJFw==, tableContent=null), ArticleFig(id=1287123975067123937, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图8, caption=
DAG 的运行时序, figureFileSmall=sS0DFy32u7bo5d0dokqW0Q==, figureFileBig=G+7bI/NhbCWKDA8NyPfJFw==, tableContent=null), ArticleFig(id=1287123975151010018, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.9, caption=
Running sequence of task under SPT algorithm, figureFileSmall=UjtGDtoXY48hzgnn8A+XjA==, figureFileBig=4jIDOahD247aMI+6zngOqw==, tableContent=null), ArticleFig(id=1287123975213924579, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图9, caption=
任务在SPT算法下的运行时序, figureFileSmall=UjtGDtoXY48hzgnn8A+XjA==, figureFileBig=4jIDOahD247aMI+6zngOqw==, tableContent=null), ArticleFig(id=1287123975281033444, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.10, caption=
Running time of DAG , figureFileSmall=U4ZBV61jVL0byRABrYGi2Q==, figureFileBig=xVieGGx/tx+dvEk3WT3rnw==, tableContent=null), ArticleFig(id=1287123975356530917, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图10, caption=
DAG 运行时间, figureFileSmall=U4ZBV61jVL0byRABrYGi2Q==, figureFileBig=xVieGGx/tx+dvEk3WT3rnw==, tableContent=null), ArticleFig(id=1287123975423639782, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.11, caption=
Hardware system under test, figureFileSmall=KE3FKmyxeE6rIz+MuwVAQA==, figureFileBig=ms0W6NJx/ZL6e5CsEum+Eg==, tableContent=null), ArticleFig(id=1287123975503331559, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图11, caption=
测试硬件系统, figureFileSmall=KE3FKmyxeE6rIz+MuwVAQA==, figureFileBig=ms0W6NJx/ZL6e5CsEum+Eg==, tableContent=null), ArticleFig(id=1287123975574634728, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Fig.12, caption=
Plot of experimental results, figureFileSmall=H5++/qdqR2vUNc73BaxFUw==, figureFileBig=VCV5DLjiO6gLE24i9ihQhg==, tableContent=null), ArticleFig(id=1287123977252356329, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=图12, caption=
试验结果数据, figureFileSmall=H5++/qdqR2vUNc73BaxFUw==, figureFileBig=VCV5DLjiO6gLE24i9ihQhg==, tableContent=null), ArticleFig(id=1287123977344631018, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Tab.1, caption=
Time complexity analysis of SLS
, figureFileSmall=null, figureFileBig=null, tableContent=
| 行为 | 时间复杂度 |
|---|
| 遍历剩余节点识别就绪集 | |
| 基于动态规划计算最长路径 | |
| 排序 | |
), ArticleFig(id=1287123977411739883, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=表1, caption=
SLS算法时间复杂度统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 行为 | 时间复杂度 |
|---|
| 遍历剩余节点识别就绪集 | |
| 基于动态规划计算最长路径 | |
| 排序 | |
), ArticleFig(id=1287123977483043052, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Tab.2, caption=
The first calculation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 就绪节点 | | |
|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| | |
), ArticleFig(id=1287123977583706349, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=表2, caption=
第一次计算
, figureFileSmall=null, figureFileBig=null, tableContent=
| 就绪节点 | | |
|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| | |
), ArticleFig(id=1287123977696952558, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=EN, label=Tab.3, caption=
Second calculation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 就绪节点 | | |
|---|
|
|
|
), ArticleFig(id=1287123977780838639, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1286676567241765870, language=CN, label=表3, caption=
第二次计算
, figureFileSmall=null, figureFileBig=null, tableContent=
| 就绪节点 | | |
|---|
|
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