طراحی و پیاده سازی گیرنده هشدارسریع زمینی به منظور پایش سیگنال ماهواره‌های SAR

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه امام حسین(ع)

چکیده

در این مقاله، یک گیرنده هشدار سریع زمینی جهت دریافت و پایش سیگنال از رادار روزنه مصنوعی فضاپایه معرفی و تشریح شده که می تواند جهت کاربردهای متنوع جنگ الکترونیک مورد استفاده قرار گیرد. این گیرنده از دو بخش آشکارساز پارامترهای زمانی و آشکارساز پارامترهای فرکانسی، تشکیل شده و قادر است تا توان سیگنال، پهنای باند، فرکانس مرکزی، عرض پالس، نرخ تکرار پالس، شکل بیم آنتن و مدت زمان تصویربرداری رادار SAR فضاپایه را از روی سیگنال دریافتی اندازه گیری کند. همچنین برخی از دریافت های موفق این گیرنده از ماهواره‌های تصویربرداری Cosmo-Skymed و FIA Radar درج شده و برخی از پارامترهای بدست آمده با پارامترهای ذکر شده در منابع آشکار مقایسه شده است.

کلیدواژه‌ها

عنوان مقاله [English]

Monitoring and Analysis of SAR Satellite Signals Using a Ground Early Warning Receiver

نویسندگان [English]

  • Masoud Ardini
  • Mohammad Rooeinfar
  • Rouhollah Ramazani
  • Ahmadreza Amin
چکیده [English]

In this paper, a ground early warning receiver is introduced and explained for the reception and
monitoring of signals from a space-borne synthetic aperture radar. This receiver can be used for
various electronic warfare applications and implemented in two sectors of time parameter
detector and frequency parameter detector. It can measure the signal power, bandwidth, central
frequency, pulse width, pulse repetition frequency, antenna pattern shape, and imaging duration
time from the received signal. In section of frequency parameter detector, the spectrum analyzer
is used. Based on this receiver, a new method is invented for recognizing LFM signal from other
pulse compression methods. Also, in this paper, a technique is demonstrated for identifying
SAR signals from other signal sources and estimation imaging parameters. At the end of this
report, several cases of success in receiving signals from COSMO-SkyMed and FIA-Radar are
listed and some of the obtained parameters from signals are compared with the references. Also,
features of space-borne SAR signals are described. in which bandwidth, pulse repetition
frequency, imaging duration time, and power density are investigated using analytical relations.

کلیدواژه‌ها [English]

  • Monitoring Receiver
  • Time Detector؛ Frequency Detector؛ Synthetic aperture Radar؛ Satellite

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رادار
دوره 4، شماره 1 - شماره پیاپی 1
651
اردیبهشت 1395
صفحه 23-35

فایل ها

سابقه مقاله

  • تاریخ دریافت: 26 خرداد 1394
  • تاریخ بازنگری: 02 بهمن 1402
  • تاریخ پذیرش: 28 شهریور 1397
  • تاریخ انتشار: 01 اردیبهشت 1395

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