کاهش اثر تداخل در گیرنده GPS با بکارگیری چند همبسته ساز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استاد، دانشکده مهندسی برق، دانشگاه علم و صنعت، تهران، ایران

2 دانشجوی دکتری، دانشکده مهندسی برق، دانشگاه علم و صنعت، تهران، ایران

3 استادیار، دانشکده فناوری های نوین، دانشگاه محقق اردبیلی، اردبیل، ایران

چکیده

استفاده از سامانه موقعیت­یابیجهانی(GPS)در سامانه­های فوق خودکار،روزبه‌روز رو به افزایشاست و لذا مسئله امنیت این سامانه­ها بسیار حائز اهمیت می­باشد.یک خطر بزرگ در تخمین موقعیت توسط GPS،حمله فریباست. فریبنده سیگنال ماهواره را جعل می­کند تا گیرنده را مجبور به تخمین اشتباه موقعیت نماید. تحقیقات بسیاری بر روی آشکارسازی و کاهش فریب در گیرندهGPSتمرکز دارند.در این مقاله،به­کارگیریمعماری چند همبسته­ساز مبتنی بر شبکه عصبی جهت مقابله با حمله فریب پیشنهاد شده است. حمله فریب با سازوکار ترکیب و تأخیر بر مبنای یک سیگنال واقعی GPS ساخته شده است. نتایج شبیه­سازی­های انجام شده در گیرنده نرم‌افزاری، حاکی از مؤثر بودن راهکار پیشنهادی در جهت کاهش حمله فریب می­باشد. با مورد مطالعه قرار دادن سه سناریو فریب عملی، روش پیشنهادی مورد ارزیابی قرار گرفت و نتایج حاصله نشان می­دهند که میزان کاهش خطای فریب با به­کارگیری این روش، 42/88% می­باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Reducing Interference Effect on GPS Receiver by Using Multi-correlation Architecture

نویسندگان [English]

  • M. R. Mosavi 1
  • S. Tohidi 2
  • M. Moazedi 3
1 Professor, Faculty of Electrical Engineering, University of Science and Technology, Tehran, Iran
2 PhD Student, Faculty of Electrical Engineering, University of Science and Technology, Tehran, Iran
3 Assistant Professor, Faculty of New Technologies, Mohaghegh Ardabili University, Ardabil, Iran
چکیده [English]

The use of Global Positioning System (GPS)  in highly automated systems is increasing day by day. Therefore, itssecurity of these systems is getting important more and more. The reliability of the obtained position by GPS is in danger by spoofing attacks. A spoofer transmits replicas of authentic satellite signals to force the victim receiver to misjudge the its position estimate. Numerousresearches have been focused on spoofing detection and mitigation in the GPS receivers. In this paper, mitigation of spoofing attack is suggested by using multi-correlator architecture associated with neural network. Spoofing signal is generated by mixing two signals which are produced by authentic GPS signal and its shifted. The results of the simulations which wasperformed in the software defined receiver, indicate the solution was effective in mitigating the spoofing attack. By studying three scenarios of spoofing, the proposed method was evaluated and the results show that the rate of reduction of deception error is 88.42% by using multi-correlation architecture.

کلیدواژه‌ها [English]

  • Spoofing
  • GPS Receiver
  • Multi-correlation Architecture
  • Neural Network
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دوره 9، شماره 3 - شماره پیاپی 35
شماره پیاپی 35، فصلنامه پاییز
آذر 1400
صفحه 49-57
  • تاریخ دریافت: 09 آبان 1399
  • تاریخ بازنگری: 07 اسفند 1399
  • تاریخ پذیرش: 13 تیر 1400
  • تاریخ انتشار: 01 آذر 1400