مورد إلكتروني
An all-digital image synthesizer for countering high-resolution imaging radars
| العنوان: | An all-digital image synthesizer for countering high-resolution imaging radars |
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| المؤلفون: | Electrical and Computer Engineering, Pace, Phillip E., Ekestrom, S., Karow, C., Fouts, D. |
| بيانات النشر: | Naval Postgraduate School 2000-02-24 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | A digital image synthesizer (DIS), especially useful as a counter-targeting signal repeater, (i.e., for synthesizing the characteristic echo signature of a pre-selected target) is reported. The DIS has a digital radio frequency memory (DRFM) and associated circuitry, including digital tapped delay lines and a modulator in each delay line to impose both amplitude and frequency modulation in each line. A unique property of the digital image synthesizer is its ability to synthesize false targets using wideband chirp signals of any duration. To generate the target, the user can program the target extent (number of taps) and the amplitude and Doppler frequency of each range-Doppler cell within the image. The system-on-a-chip uses a scalable CMOS technology that increases the bandwidth and sensitivity of such a repeater over prior analog based systems. The application specific integrated circuit reduces the noise of the repeated signal, reduces the size and cost of such a system, and permits real time alteration of operating parameters, permitting rapid and adaptive shifting among different types of targets to be synthesized. A scan path test capability is also included to allow intre-schip signal analysis and verification. |
| مصطلحات الفهرس: | digital radio frequency memory, DRFM, counter-targeting, image synthesizer, application specific integrated circuit, ASIC, electronic warfare, Technical Report |
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| الإتاحة: | Open access content. Open access content |
| ملاحظة: | en_US |
| أرقام أخرى: | AD# oai:calhoun.nps.edu:10945/33964 NPS-EC-00-005 1130735076 |
| المصدر المساهم: | NAVAL POSTGRADUATE SCH From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1130735076 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |