Frekans Modülasyonlu Sürekli Dalga (FMSD) Ölçüm Sistemlerinde Faz Gürültü Etkisinin Telafisi

Yıl 2018, , 777 - 784, 01.12.2018

Eren Vardarlı Kıvılcım Yüksel Aldoğan

https://doi.org/10.2339/politeknik.391797

Öz

Bu
makalede, tüm tasarım parametreleri dikkate alınarak, Frekans Modülasyonlu
Sürekli Dalga ölçüm sistemlerinde (FMSD) kullanılan faz gürültüsü telafi
algoritmalarının analizi sunulmuştur. Bu sayede radyo frekansından optik
frekanslara kadar FMSD-tabanlı sistemler için genel ve gerçekçi bir model
oluşturulmuştur. Önerilen faz gürültüsü telafi algoritmasının geçerliliği
benzetimler aracılığı ile doğrulanmıştır. Benzetim sonuçları makalede sunulan
matematiksel modeller ile uyum içerisindedir. Bu çalışma, doğrusal olmayan
frekans modülasyonun ortaya çıkardığı pahalı ve karmaşık donanımsal
gereksinimlerin üstesinden gelinebilmesini sağlayarak, birden fazla teknolojik
alanda (örn. SAR radarlar, fiber optik sensörler) etki yaratabilir

Anahtar Kelimeler

Faz gürültüsü, frekans modülasyonlu sürekli dalga, metroloji, optik sensör, radar

Phase Noise Compensation in Frequency Modulated Continuous Wave (FMCW) Measurement Systems

Öz

We present
the analysis of the phase noise compensation algorithms used in Frequency
Modulated Continuous Wave measurement systems taking into account all the
design parameters. This allows obtaining a generic yet realistic
framework for the FMCW-based systems ranging from RF to optical frequencies.
The efficiency of the proposed phase-noise compensation algorithm has been
verified by the way of simulations. The simulation results show a good
agreement with the mathematical foundations discussed in the paper. This work
could have a technological implication in many fields (e.g. SAR radar, optical
fiber sensor interrogation) in such a way that the stringent and expensive
hardware requirements due to nonlinear frequency
modulation effects can be overcome a
posteriori by the phase noise compensation algorithm demonstrated in this
article.

Anahtar Kelimeler

Phase noise, frequency modulated continuous wave, metrology, optical sensor, radar

Kaynakça

• [1] Yongqi J., Guoyu H., Ding X., “A new realizable technique to improve the VCO linearity”, 6th International Symposium on antennas, propagation and EM theory, 396-399, (2003).
• [2] Samarah A. S., Loffeld O., Shahab W., Al-Ibrahim M., “A Digital Sweep (Chirp) Generator With Extremely Small Memory Size And High Level Of The Spurious Free Dynamic Range”, International Journal of Simulation Systems, Science & Technology, 11(1): 9-15, 2010.
• [3] Meta A., Hoogeboom P., Ligthart L. P., “Range non-linearities correction in FMCW SAR”, IEEE International Conference on Geoscience and Remote Sensing Symposium, 403 – 406, (2006).
• [4] Burgos G., Castillo M. C., et al, “Digital on- line compensation of errors induced by linear distortion in broadband LFM radars”, Electronics Letters, 39(1):116 – 118, (2003).
• [5] Ding Z., Liu T., Meng Z., Liu K., Chen Q., Du Y., Li D., Yao X. S., “Improving spatial resolution of optical frequency-domain reflectometry against frequency tuning nonlinearity using non-uniform fast Fourier transform”, Review of Scientific Instruments, 83(6): 066110, (2012).
• [6] Manuel R. M., Sutherland H. E., “Signal conditioning for compensating nonlinearity and non-repeatability of an optical frequency scanning laser implemented in a C-OFDR system”, Applied Optics, 56(3): 457-461, (2017).
• [7] Wang B., Fan X., Wang S., Du J., He Z., “Millimeter-resolution long-range OFDR using ultra-linearly 100 GHz-swept optical source realized by injection-locking technique and cascaded FWM process”, Optics Express, 25(4): 3514-3524, (2017).
• [8] https://www.thalesgroup.com/en/squire