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Chen Y, Liang D, Yue H, Liu D, Wu X, Zhang H, Jiao Y, Liu K, Wang R. Implementation of a Phase Synchronization Scheme Based on Pulsed Signal at Carrier Frequency for Bistatic SAR. SENSORS 2020; 20:s20113188. [PMID: 32512743 PMCID: PMC7309016 DOI: 10.3390/s20113188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 11/16/2022]
Abstract
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.
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Affiliation(s)
- Yafeng Chen
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
| | - Da Liang
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100039, China
| | - Haixia Yue
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
| | - Dacheng Liu
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
| | - Xiayi Wu
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
| | - Heng Zhang
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
| | - Yuanbo Jiao
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
| | - Kaiyu Liu
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
- Correspondence: ; Tel.: +86-10-5888-7368
| | - Robert Wang
- Space Microwave Remote Sensing System Department, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; (Y.C.); (D.L.); (H.Y.); (D.L.); (X.W.); (H.Z.); (Y.J.); (R.W.)
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Abd MH, Tahir FR, Al-Suhail GA, Pham VT. An adaptive observer synchronization using chaotic time-delay system for secure communication. NONLINEAR DYNAMICS 2017; 90:2583-2598. [DOI: 10.1007/s11071-017-3825-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Yang X, Min L, Wang X. A cubic map chaos criterion theorem with applications in generalized synchronization based pseudorandom number generator and image encryption. CHAOS (WOODBURY, N.Y.) 2015; 25:053104. [PMID: 26026316 DOI: 10.1063/1.4917380] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This paper sets up a chaos criterion theorem on a kind of cubic polynomial discrete maps. Using this theorem, Zhou-Song's chaos criterion theorem on quadratic polynomial discrete maps and generalized synchronization (GS) theorem construct an eight-dimensional chaotic GS system. Numerical simulations have been carried out to verify the effectiveness of theoretical results. The chaotic GS system is used to design a chaos-based pseudorandom number generator (CPRNG). Using FIPS 140-2 test suit/Generalized FIPS 140-2, test suit tests the randomness of two 1000 key streams consisting of 20 000 bits generated by the CPRNG, respectively. The results show that there are 99.9%/98.5% key streams to have passed the FIPS 140-2 test suit/Generalized FIPS 140-2 test. Numerical simulations show that the different keystreams have an average 50.001% same codes. The key space of the CPRNG is larger than 2(1345). As an application of the CPRNG, this study gives an image encryption example. Experimental results show that the linear coefficients between the plaintext and the ciphertext and the decrypted ciphertexts via the 100 key streams with perturbed keys are less than 0.00428. The result suggests that the decrypted texts via the keystreams generated via perturbed keys of the CPRNG are almost completely independent on the original image text, and brute attacks are needed to break the cryptographic system.
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Affiliation(s)
- Xiuping Yang
- Schools of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - Lequan Min
- Schools of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - Xue Wang
- Schools of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
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Hung YC, Hu CK. Chaotic communication via temporal transfer entropy. PHYSICAL REVIEW LETTERS 2008; 101:244102. [PMID: 19113622 DOI: 10.1103/physrevlett.101.244102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2008] [Indexed: 05/27/2023]
Abstract
We propose a new perspective on communication using chaos. A binary message is encoded into the temporally causal relations on a coupled maps ring of N chaotic nodes. From the analysis of temporal transfer entropy, the masked information can be recovered from transmitted signals at the receiver. The communication scheme has been demonstrated to be robust against external noise and some traditional attacks.
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Affiliation(s)
- Yao-Chen Hung
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
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Rhouma R, Safya B. On the security of a spatiotemporal chaotic cryptosystem. CHAOS (WOODBURY, N.Y.) 2007; 17:033117. [PMID: 17902999 DOI: 10.1063/1.2756297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Recently, Tang et al. [Phys Lett. A 318, 388 (2003)] proposed a spatiotemporal cryptosystem based on one-way coupled map lattices. They claim that it has high security, fast encryption speed, and short synchronization transient. This work proves that this scheme has some security weaknesses. Indeed, we propose an attack which the system cannot withstand.
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Affiliation(s)
- Rhouma Rhouma
- Syscom Laboratory, Ecole Nationale d'Ingénieurs de Tunis, 37, Le Belvédère 1002 Tunis, Tunisia.
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Alvarez G, Montoya F, Pastor G, Romera M. Breaking a secure communication scheme based on the phase synchronization of chaotic systems. CHAOS (WOODBURY, N.Y.) 2004; 14:274-278. [PMID: 15189055 DOI: 10.1063/1.1688092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A security analysis of a recently proposed secure communication scheme based on the phase synchronization of chaotic systems is presented. It is shown that the system parameters directly determine the cipher text waveform, hence it can be readily broken by system parameter estimation from the cipher text signal.
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Affiliation(s)
- G Alvarez
- Instituto Fisica Aplicada, Consejo Superior de Investigaciones Cientificas, Serrano 144, 28006-Madrid, Spain.
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Wang X, Zhan M, Lai CH, Gang H. Error function attack of chaos synchronization based encryption schemes. CHAOS (WOODBURY, N.Y.) 2004; 14:128-137. [PMID: 15003053 DOI: 10.1063/1.1633492] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Different chaos synchronization based encryption schemes are reviewed and compared from the practical point of view. As an efficient cryptanalysis tool for chaos encryption, a proposal based on the error function attack is presented systematically and used to evaluate system security. We define a quantitative measure (quality factor) of the effective applicability of a chaos encryption scheme, which takes into account the security, the encryption speed, and the robustness against channel noise. A comparison is made of several encryption schemes and it is found that a scheme based on one-way coupled chaotic map lattices performs outstandingly well, as judged from quality factor.
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Affiliation(s)
- Xingang Wang
- Temasek Laboratories, National University of Singapore, 119260, Singapore
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