Improved ASM-TER Training Sequence Detection and Fine Doppler Frequency Estimation Methods from a Satellite
المؤلفون المشاركون
Ren, Peng
Zhang, Peixin
Wang, Jianxin
Yang, Shushu
Song, Haiwei
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-06-08
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
To detect terrestrial application-specific messages (ASM-TER) signals from a satellite, a novel detection method based on the fast computation of the cross ambiguity function is proposed in this paper.
The classic cross ambiguity function’s computational burden is heavy, and we transform the classic cross ambiguity function to a frequency domain version to reduce the computational complexity according to Parseval’s theorem.
The computationally efficient sliding discrete Fourier transform (SDFT) is utilized to calculate the frequency spectrum of the windowed received signal, from which the Doppler frequency could be estimated coarsely.
Those subbands around the Doppler frequency are selected to calculate the ambiguity function for reducing the computational complexity.
Furthermore, two local sequences with half length of the training sequence are utilized to acquire a better Doppler frequency tolerance; thus, the frequency search step is increased and the computational complexity could be further reduced.
Once an ASM-TER signal is detected by the proposed algorithm, a fine Doppler frequency estimation could be obtained easily from the correlation peaks of the two local sequences.
Simulation results show that the proposed algorithm shares almost the same performance with the classic cross ambiguity function-based method, and the computational complexity is greatly reduced.
Simulation results also show that the proposed algorithm is more resistant to cochannel interference (CCI) than the differential correlation (DC) algorithm, and the performance of fine Doppler frequency estimation is close to that of the Cramér–Rao lower bound (CRLB).
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhang, Peixin& Wang, Jianxin& Ren, Peng& Yang, Shushu& Song, Haiwei. 2020. Improved ASM-TER Training Sequence Detection and Fine Doppler Frequency Estimation Methods from a Satellite. Journal of Sensors،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1190418
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhang, Peixin…[et al.]. Improved ASM-TER Training Sequence Detection and Fine Doppler Frequency Estimation Methods from a Satellite. Journal of Sensors No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1190418
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhang, Peixin& Wang, Jianxin& Ren, Peng& Yang, Shushu& Song, Haiwei. Improved ASM-TER Training Sequence Detection and Fine Doppler Frequency Estimation Methods from a Satellite. Journal of Sensors. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1190418
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1190418
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر