Improvement of IFM receivers' accuracy using the hybrid method based on the MMSE algorithm

Document Type : Original Article

Authors

1 PhD student, National Defense University, Tehran, Iran

2 Assistant Professor, National Defense University, Tehran, Iran

3 Assistant Professor, Khatam Al Anbia Air Defense University, Tehran, Iran

Abstract

This article proposes a hybrid method to calculate the frequency in the instantaneous frequency measurement (IFM) receivers. This method improves the frequency accuracy of the corresponding receiver by performing a process of effective and targeted signal operation can provide the basis for improving the efficiency of the intelligent function of all types of ground-based and air-based jammers. To efficiently process the output data of IFM discriminators and increase the accuracy of frequency measurement, instead of the previous methods that usually change the structure of the separator in the RF field, new ideas in the digital field such as minimum mean square error (MMSE) algorithm is used. In this research, using a special combined method based on the MMSE algorithm and related optimization, frequency accuracy with RMS error of 2.1582 MHz in 2 GHz bandwidth is achieved in IFM receivers.

Keywords

p>Smiley face

References

 [1] P. W. East, ,Fifty years of instantaneous frequency measurement, IET Radar, Sonar Nav., vol. 6, no. 2, p. 112, 2012. Doi:10.1049/iet-rsn.2011.0177
[2] Shang Liu et al Digital instantaneous frequency measurement with wide bandwidth for real-valued waveforms using multiple sub-Nyquist channels, Meas. Sci. Technol. 34 025101, 2023. Doi: 10.1088/1361-6501/ac97b3
[3] H. Shafaghati, S. A. Ahmadi, Design of a Wideband  Power Amplifier by the Real Frequency Technique, Scientific Journal of  Radar. vol.9, no. 2, 2021. (In Persian)
[4] S. E. Choondaragh and N. Masoumi, Microstrip frequency discriminators based on quarter-wave band-stop filters, 7'th International Symposium on Telecommunications Tehran, Iran, 2014. pp. 198-202, Doi: 10.1109/ISTEL.2014.7000697.
[5] M. F. A. de Souza, F. R. L. e. Silva and M. T. de Melo, A Novel LSB Discriminator for a 5 bit IFM Subsystem Based on Microstrip Band-Stop Filter, 2008 38th European Microwave Conference, Amsterdam, Netherlands, 2008, pp. 36-39, Doi: 10.1109/EUMC.2008.4751380.
 [6] Guo-Chun Liang, Chien-Fu Shih, R. S. Withers, B. F. Cole and M. E. Johansson,Space-qualified superconductive digital instantaneous frequency-measurement subsystem, IEEE Transactions on Microwave Theory and Techniques, vol. 44, no. 7, pp. 1289-1299, 1996.Doi: 10.1109/22.508233.
 [7] J. P. Coupez, H. Gruchala, A. Slowik, C. Recko and A. Rutkowski, High resolution IFMs, 14th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2002. Conference Proceedings (IEEE Cat.No.02EX562), Gdansk, Poland, 2002, pp. 484-487 vol.2, Doi: 10.1109/MIKON.2002.1017893.
[8] Z. Li, C. Wang, M. Li, H. Chi, X. Zhang and J. Yao, Instantaneous Microwave Frequency Measurement Using a Special Fiber Bragg Grating, in IEEE Microwave and Wireless Components Letters, vol. 21, no. 1, pp. 52-54, Jan. 2011, Doi: 10.1109/LMWC.2010.2091114.
 [9] M. Biehl et al., A 4 bit instantaneous frequency meter at 10 GHz with coplanar YBCO delay lines, in IEEE Transactions on Applied Superconductivity, vol. 5, no. 2, pp. 2279-2282, June 1995, Doi: 10.1109/77.403040.
[10] J. Ghalandari.et al., A framework for multi-mode radars discrimination based on extended PDW, Scientific Journal of Radar, Vol. 9, No. 2, 2021.
[11] Y. Yang and R. S. Blum, "MIMO radar waveform design based on mutual information and minimum mean-square error estimation," in IEEE Transactions on Aerospace and Electronic Systems, vol. 43, no. 1, pp. 330-343, January 2007, Doi:10.1109/TAES.2007.357137
[12] M. Esfandiari.et al., Fast separation of interleaved radar pulse trains using frequency domain analysis, Scientific Journal of Radar, Vol 3, No. 4, 2016.
[13] K. Heydari..et al., SNR Improvement in Semi-active Tracking Radar Using, Scientific Journal of Radar, Vol. 5, No. 4, 2017.
 [14] J. Kus, "Instantaneous Frequency Measuring Receiver for L band," 2006 International Conference on Microwaves, Radar & Wireless Communications, Krakow, Poland, 2006, pp. 1156-1159, Doi: 10.1109/MIKON.2006.4345392.
[15]  S. Keshani and N. Masoumi, Improved Frequency Accuracy of IFM Using Minimum Mean Squared Error Algorithm, Electrical Engineering (ICEE), Iranian Conference on, Mashhad,Iran,2018,pp.260-264.
        Doi: 10.1109/ICEE.2018.8472591.
[16] Á. B. de Oliveira, L. A. Tambara and F. L. Kastensmidt, Applying lockstep in dual-core ARM Cortex-A9 to mitigate radiation-induced soft errors, 2017 IEEE 8th Latin American Symposium on Circuits & Systems (LASCAS), Bariloche, Argentina, 2017, pp. 1-4,
        Doi: 10.1109/LASCAS.2017.7948063.
Radar
Volume 11, Issue 1
Serial number 29, spring and summer quarterly
August 2023

Files

History

  • Receive Date: 14 March 2023
  • Revise Date: 06 July 2023
  • Accept Date: 31 July 2023
  • Publish Date: 23 August 2023

Share

How to cite

Statistics