An Advanced Phase Synchronization Scheme Based on Coherent Integration and Waveform Diversity for Bistatic SAR

In the bistatic synthetic aperture radar (BiSAR) system, the deviation between two oscillators in different platforms will cause an additional modulation of BiSAR echoes. Therefore, phase synchronization is one of the key issues that must be addressed for the BiSAR system. The oscillator phase error model and the principle of phase synchronization are firstly described. The waveform diversity technology has been widely used in many fields, for example, the hearing aids device and the recognition of auditory input source in cocktail party problem. Inspired by this, an advanced phase synchronization scheme based on coherent integration and waveform diversity is proposed. The synchronization signal and radar signal are orthogonal signals which can be separated by using waveform diversity technique. After extracting the synchronization signal, the phase synchronization accuracy can be further improved by coherent integration. The transmission of synchronization signals between two synchronization antennas is analyzed, followed by the theoretical error analysis. Then, the processing of separating the echo signal and synchronization signal is described in detail. The simulation experiments are performed. The accuracy of phase synchronization can reach 1 degree, which verifies the effectiveness of the proposed synchronization scheme.

Download Full-text

An Advanced Phase Synchronization Scheme for LT-1

IEEE Transactions on Geoscience and Remote Sensing ◽

10.1109/tgrs.2019.2948219 ◽

2020 ◽

Vol 58 (3) ◽

pp. 1735-1746 ◽

Cited By ~ 4

Author(s):

Guodong Jin ◽

Kaiyu Liu ◽

Dacheng Liu ◽

Da Liang ◽

Heng Zhang ◽

...

Keyword(s):

Phase Synchronization ◽

Advanced Phase ◽

Synchronization Scheme

Download Full-text

Implementation of a Phase Synchronization Scheme Based on Pulsed Signal at Carrier Frequency for Bistatic SAR

Sensors ◽

10.3390/s20113188 ◽

2020 ◽

Vol 20 (11) ◽

pp. 3188

Author(s):

Yafeng Chen ◽

Da Liang ◽

Haixia Yue ◽

Dacheng Liu ◽

Xiayi Wu ◽

...

Keyword(s):

Carrier Frequency ◽

Phase Synchronization ◽

Time Slot ◽

Test Results ◽

Factors Affecting ◽

Bistatic Sar ◽

Advanced Phase ◽

Ground Validation ◽

Bistatic Synthetic Aperture Radar ◽

Synchronization Scheme

Phase synchronization is one of the key technical challenges and prerequisites for the bistatic synthetic aperture radar (SAR) system, which can form a single-pass interferometry system to perform topographic mapping. In this paper, an advanced phase synchronization scheme based on a pulsed signal at carrier frequency is proposed for a bistatic SAR system and it is verified by a ground validation system. In the proposed phase synchronization scheme, the pulsed signal at carrier frequency is used for phase synchronization link, and it is exchanged by virtue of a time slot between radar signals. The feasibility of the scheme is proven by theoretical analysis of various factors affecting the performance of phase synchronization, and the reliability of the scheme is verified by the test results of the ground validation system.

Download Full-text

A block turbo phase synchronization scheme

IEEE Signal Processing Letters ◽

10.1109/lsp.2005.861582 ◽

2006 ◽

Vol 13 (3) ◽

pp. 125-128 ◽

Cited By ~ 3

Author(s):

C. Vanstraceele ◽

J.P. Barbot ◽

J.M. Brossier ◽

B. Geller

Keyword(s):

Phase Synchronization ◽

Synchronization Scheme

Download Full-text

Phase synchronization scheme for a practical phase sensitive amplifier of ASK-NRZ signals

Optics Express ◽

10.1364/oe.19.012384 ◽

2011 ◽

Vol 19 (13) ◽

pp. 12384 ◽

Cited By ~ 9

Author(s):

Stylianos Sygletos ◽

Selwan K. Ibrahim ◽

Ruwan Weerasuriya ◽

Richard Phelan ◽

L. Grüner Nielsen ◽

...

Keyword(s):

Phase Synchronization ◽

Phase Sensitive ◽

Synchronization Scheme

Download Full-text

The Synchronization Transceiver Design and Experimental Verification for the LuTan-1 SAR Satellite

Sensors ◽

10.3390/s20051463 ◽

2020 ◽

Vol 20 (5) ◽

pp. 1463

Author(s):

Yuanbo Jiao ◽

Da Liang ◽

Kaiyu Liu ◽

Yafeng Chen ◽

Huaizu Wang ◽

...

Keyword(s):

Phase Synchronization ◽

Echo Signal ◽

Detailed Design ◽

Residual Phase ◽

Unit Design ◽

Working Principle ◽

Synchronization Scheme ◽

Synchronization Accuracy ◽

Switch Module ◽

Synchronization Unit

The deviation between the two oscillators in BiSAR systems will cause a residual modulation of echo signal. Therefore, the phase synchronization is an important issue that must be addressed for BiSAR systems. An advanced non-interrupted phase synchronization scheme is used for the LuTan-1 SAR satellite. The synchronization transceiver (STR) is designed for transmitting and receiving synchronization signals. In addition, STR mainly consists of master and auxiliary transceivers and switch module. Furthermore, the function and working principle of STR are introduced, and the detailed design of each part is described. The measured results are also evaluated to prove the performance of the STR. In addition, the phase synchronization accuracy is also demonstrated to verify the effectiveness of the non-interrupted synchronization scheme. The standard deviation (STD) of the residual phase is less than 0.3 degrees. The results have guiding significance for the synchronization unit design of LuTan-1 and the future BiSAR system.

Download Full-text

Message Embedded Chaotic Masking Synchronization Scheme Based on the Generalized Lorenz System and Its Security Analysis

International Journal of Bifurcation and Chaos ◽

10.1142/s0218127416501406 ◽

2016 ◽

Vol 26 (08) ◽

pp. 1650140 ◽

Cited By ~ 10

Author(s):

Sergej Čelikovský ◽

Volodymyr Lynnyk

Keyword(s):

Numerical Experiments ◽

Chaotic Dynamics ◽

Lorenz System ◽

Bounded Function ◽

Security Analysis ◽

Encryption Scheme ◽

The Novel ◽

Generalized Lorenz System ◽

Synchronization Signal ◽

Synchronization Scheme

This paper focuses on the design of the novel chaotic masking scheme via message embedded synchronization. A general class of the systems allowing the message embedded synchronization is presented here, moreover, it is shown that the generalized Lorenz system belongs to this class. Furthermore, the secure encryption scheme based on the message embedded synchronization is proposed. This scheme injects the embedded message into the dynamics of the transmitter as well, ensuring thereby synchronization with theoretically zero synchronization error. To ensure the security, the embedded message is a sum of the message and arbitrary bounded function of the internal transmitter states that is independent of the scalar synchronization signal. The hexadecimal alphabet will be used to form a ciphertext making chaotic dynamics of the transmitter even more complicated in comparison with the transmitter influenced just by the binary step-like function. All mentioned results and their security are tested and demonstrated by numerical experiments.

Download Full-text