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ردیابی اهداف مانور بالا مبتنی بر روش حالت افزوده با استفاده از فیلتر کالمن خنثی تطبیقی | ||
پدافند الکترونیکی و سایبری | ||
مقاله 9، دوره 7، شماره 2 - شماره پیاپی 26، تیر 1398، صفحه 93-108 اصل مقاله (1.68 M) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسندگان | ||
علی کارساز* 1؛ سید وحید مولایی کبودان2 | ||
1استادیار موسسه آموزش عالی خراسان | ||
2دانشجوی کارشناسی ارشد، موسسه آموزش عالی خراسان | ||
تاریخ دریافت: 08 مرداد 1397، تاریخ پذیرش: 21 مهر 1397 | ||
چکیده | ||
بسیاری از روشهای ردیابی اهداف راداری مانور بالا مانند روش حالت افزوده بر اساس شبیهسازی معادلات حرکت هدف و رادار در مختصات کارتزین صورت میپذیرند. در محیط عملیاتی همراه با اختلالهای نویزی، ردیابی اهداف راداری به خصوص در مانورهای بالا که هدف در حال دور شدن از محل استقرار رادار است، خطای اندازهگیری رادار روی محورهای کارتزین دائما رو به افزایش بوده در صورتیکه در بسیاری از مقالات، خطای مشاهدات با کواریانس ثابتی روی محورهای مختصات کارتزین لحاظ میگردد. از طرفی بردار واقعی مشاهدات رادار شامل فاصله و زاویه سمت هدف در مختصات قطبی بوده و مدلسازی این مشاهدات در این مختصات باعث غیرخطی شدن روابط میشود و نیاز به روشهای تخمین غیرخطی مانند فیلتر کالمن خنثییا توسعهیافته را ایجاد مینماید. روش پیشنهادی در این مقاله با بهکارگیری ایده حالت افزوده در مختصات قطبی به رهگیری اهداف راداری مانور بالا بر اساسفیلتر کالمن خنثی میپردازد روش پیشنهادی با بهکارگیری الگوریتم تطبیق ماتریس کواریانس تخمین در هر مرحله، معضل همگرایی دیرهنگام فیلتر را برطرف نموده و از واگرایی آن جلوگیری مینماید. نتایج شبیهسازی در سناریوهای مانور متوسط و بالا بر اساس روش پیشنهادی نسبت به دو روش فیلتر کالمن خنثیو توسعهیافته، بهبود بیش از 90 درصدی را نشان میدهد. | ||
کلیدواژهها | ||
تخمین ورودی نامعلوم؛ ردیابی اهداف راداری مانور بالا؛ فیلتر کالمن خنثی تطبیقی AUKF؛ روش حالت افزوده | ||
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مراجع | ||
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