Improving the Structure of a Signal Used for Real-Time Calibrating of the Receiving Channels of Digital Transceiver Modules in Digital Phased Antenna Arrays
https://doi.org/10.32603/1993-8985-2021-24-4-19-26
Аннотация
Introduction. Modern digital phased array antenna (DPAA) systems incorporate a large number of identical transceiver modules (TMs). These modules require real-time calibration with a high level of accuracy. In a previous work, we proposed a real-time calibration method for all receiver channels, which is based on the use of a calibration signal (CalSig) of the same frequency spectrum as the reflected signal and modulated in phase and amplitude by BPSK and OOK codes, respectively. This method was found to have a number of advantages over conventional approaches. However, the use of the same CalSig sample for all receiving channels increases the noise power gain at the output of a digital beam-forming unit (DBU). To overcome this limitation, we set out to improve the structure of CalSigs by making them pseudo-orthogonal. As a result, the noise power gain at the DBU output can be significantly reduced compared to that obtained in our previous work.
Aim. To propose an improved design of a controlled amplitude modulation code OOK generator, which allows creation of pseudo-orthogonal CalSigs. As a result, the noise power gain at the output will increase insignificantly, thus having no negative effect on the quality of digital beam forming, signal processing and calibration.
Materials and methods. Theory of system engineering and technology; theory of digital signal processing; system analysis; mathematical modeling.
Results. An improved CalSig for calibrating the receiving channels of TMs was obtained. A structural diagram allowing the formation of pseudo-orthogonal CalSigs was synthesized.
Conclusions. We proposed a new approach to improving the structure of signals used for real-time calibrating the DPAA receiving channels. A structural diagram of an amplitude-modulated OOK code generator for pseudo-orthogonal CalSigs was developed.
Об авторах
Hung Tran Viet
Le Quy Don Technical University
Вьетнам
Вьетнам
Viet Hung Tran, an Engineer specializing in Radar Systems, 2010, defended a Master's thesis in System Engineering and Control Automation, 2016. A specialist in systems engineering, radio-electronic and radar technology.
236 Hoang Quoc Viet St., Hanoi
Thien Hoang Minh
Le Quy Don Technical University
Вьетнам
Вьетнам
Minh Thien Hoang, an Engineer specializing in Radar Systems, 2005; defended a Master's thesis in Systems Engineering and Control Automation, 2008; defended a doctoral dissertation in the specialty Microelectronic Technology at TU Electronics and Communication Tokyo, (2015).
236 Hoang Quoc Viet St., Hanoi
Список литературы
1. Younis M., Rommelet T., de Almeida F. Q., Huber S., Martone M., Krieger G., Villano M. Investigations on the internal calibration of multi-channel SAR. 2017 IEEE Intern. Geoscience and Remote Sensing Symp. (IGARSS), 2017, pp. 5386-5389. doi: 10.1109/IGARSS.2017.8128221
2. Kim D.-Ch., Park S.-Jin, Kim T.-W., Minz L., Park S.-O. Fully Digital Beamforming Receiver With a Real-Time Calibration for 5G Mobile Communication. IEEE Transactions on Antennas and Propagation. 2019, vol. 67, no. 6, pp. 3809-3819. doi: 10.1109/TAP.2019.2902712
3. Hoffman J. P., Veilleux L., Perkovic D., Peral E., Shaffer S. Digital calibration of TR modules for real-time digital beamforming SweepSAR architectures. IEEE Aerospace Conf., Big Sky, USA, MT, 2012, pp. 1-8. doi: 10.1109/AERO.2012.6187084
4. Horst S. J., Hoffman J. P., Perkovic-Martin D., Shaffer S., Thrivikraman T., Yates Ph., Veilleuxet L. Implementation of RF circuitry for real-time digital beamforming SAR calibration schemes. Radar Systems (Radar 2012), IET Intern. Conf., pp. 1-6.
5. Hoffman J. P., Horst S., Perkovic D., Shaffer S., Ghaemi H., Veilleux L. Advances in digital calibration techniques enabling real-time beamforming SweepSAR architectures. IEEE Aerospace Conf., Big Sky, USA, MT, 2013. pp. 1-9. doi: 10.1109/AERO.2013.6497146
6. Hoffman J. P., Horst S., Veilleux L., Ghaemi H., Shaffer S. Digital calibration system enabling real-time on-orbit beamforming. IEEE Aerospace Conf., Big Sky, USA MT, 2014, pp. 1-11. doi: 10.1109/AERO.2014.6836218
7. Jens Reimann, Technique for Concurrent Internal Calibration during Data Acquisition for SAR Systems. Remote Sens. 2020, vol. 12(11), iss. 1773, pp. 1-9. doi: 10.3390/rs12111773
8. Lin Y., Ma Q., Wang S., Bu X., An J. Calibration for spaceborne phased array antennas without interrupting satellite communications. Proc. 9th WCSP, China, 2017, pp. 1-5. doi: 10.1109/WCSP.2017.8171093
9. Hung Tran Viet, Thien Hoang Minh. A real-time internal alibration method for radar systems using digital phase array antennas. INISCOM 2021, LNICST 379, pp. 88–103. doi: 10.1007/978-3-030-77424-0_8
10. Florian RUPPIN. Probability and Statistics Basic concepts. Available at: http://www.mit.edu/~ruppin/Lecture_ESIPAP_Ruppin_2018.pdf (accessed 15.09.2021)
11. Brautigam B., Schwerdt M., Bachmann M., Stangl M. Individual T/R module characterisation of the TerraSAR-X active phased array antenna by calibration pulse sequences with orthogonal codes. IEEE Intern. Geoscience and Remote Sensing Symp., 2007, pp. 5202-5205. doi: 10.1109/IGARSS.2007.4424034
12. Silverstein S. D. Application of orthogonal codes to the calibration of active phased array antennas for communication satellites. IEEE Transactions on Signal Processing. 1997, vol. 45, no. 1, pp. 206-218.
13. Surface Mount. Phase Shifter. JSPHS-23+. Available at: https://www.minicircuits.com/pdfs/JSPHS-23+.pdf (accessed 10.07.2021)
14. Yu-Tsung Lo, Chau-Chan Yui, Jean-Fu Kiang. OOK/BPSK-Modulated Impulse Transmitters Integrated With Leakage-Cancelling Circuit. IEEE Transactions on Microwave Theory and Techniques. 2013, vol. 61, no. 1, pp. 218-224. doi: 10.1109/TMTT.2012.2226746
15. Surface Mount. Switch. MSW-2-20+. Available at: https://www.minicircuits.com/pdfs/MSW-2-20+.pdf (accessed 10.07.2021)
Рецензия
Для цитирования:
Viet H.T., Minh T.H. Improving the Structure of a Signal Used for Real-Time Calibrating of the Receiving Channels of Digital Transceiver Modules in Digital Phased Antenna Arrays. Известия высших учебных заведений России. Радиоэлектроника. 2021;24(4):19-26. https://doi.org/10.32603/1993-8985-2021-24-4-19-26
For citation:
Viet H.T., Minh T.H. Improving the Structure of a Signal Used for Real-Time Calibrating of the Receiving Channels of Digital Transceiver Modules in Digital Phased Antenna Arrays. Journal of the Russian Universities. Radioelectronics. 2021;24(4):19-26. https://doi.org/10.32603/1993-8985-2021-24-4-19-26
Просмотров: 292
Послать статью по эл. почте 