Science and Technology on Underwater Information and Control Laboratory

Fengcheng, China

Science and Technology on Underwater Information and Control Laboratory

Fengcheng, China

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Wen Z.-W.,Science and Technology on Underwater Information and Control Laboratory | Wen Z.-W.,Xian Precision Machinery Research Institute | Li M.-K.,Science and Technology on Underwater Information and Control Laboratory | Li M.-K.,Xian Precision Machinery Research Institute | Wang L.-J.,Xian Precision Machinery Research Institute
Proceedings - 2016 9th International Symposium on Computational Intelligence and Design, ISCID 2016 | Year: 2017

From naval operations to ocean science missions, the importance of autonomous vehicles is increasing with the advances in underwater robotics technology. Due to the dynamic and intermittent underwater environment and physical limitations of underwater unmanned vehicle (UUV), feasible and optimal path planning is crucial for autonomous underwater operations. According to different mission, the path planning method of UUV is divided into two categories: the point to point path planning and the complete coverage path planning. The objective of this thesis is to develop and demonstrate an efficient underwater path planning method that is adapted to complicated ocean environment. In this thesis, existing path planning method for the fields of ocean science and robotics are first reviewed, and then local dynamic obstacle avoidance method is proposed to avoid dynamic obstacles. Based on this again, the path planning of UUV in local dynamic environment can be efficiently implemented by adopting rolling window path planning method and local dynamic obstacle avoidance method. This method with the guide point strategy combines global path planning with local dynamic path planning, so that not only the requirements of real-time on-line path planning for UUV are met, the global optimality is also considered. A navigation route for UUV is planned in advance by using priori environmental information based on ant colony algorithm, so it provides the reference information for the selection of guide point. In order to solved the problem of area coverage search, a complete coverage path planning method is proposed by combining ant colony algorithm with biologically inspires neural network. In order to demonstrate underwater path planning method, all of the above ideas and methods developed were tested in simulation experiments. © 2016 IEEE.


Shen S.,China Shipbuilding Industry Corporation | Shen S.,Science and Technology on Underwater Information and Control Laboratory | Hong C.,China Shipbuilding Industry Corporation | Mingzhou W.,China Shipbuilding Industry Corporation | Mingzhou W.,Science and Technology on Underwater Information and Control Laboratory
Proceedings of the 2013 International Conference on Advanced Information Engineering and Education Science, ICAIEES 2013 | Year: 2013

Based on the nonlinear dynamics theory, the feature of the sinusoidal signal, the active homing echo signal and the active homing echo signal after filtering and normalizing is presented detailedly in this paper. Through the analysis of the phase trajectory, the phase trajectory slope and the slope spectrum's changing rule of a certain number of measured active homing echo signal sample data, it can be seen that the phase trajectory motion characteristic, the slope and the slope spectrum's changing rule have certain separability. © 2013. The authors - Published by Atlantis Press.


Lv W.,Xian Precision Machinery Research Institute | Lv W.,Science and Technology on Underwater Information and Control Laboratory | Wang Z.,Xian Precision Machinery Research Institute | Li J.,Xian Precision Machinery Research Institute | And 7 more authors.
Applied Mechanics and Materials | Year: 2013

In order to use the STAP in reverberation suppression, and compare the performances of STAP for underwater LFM with CW, the method of STAP used for LFM was proposed. Firstly, the principle of STAP for CW was analyzed, according to the underwater echo of CW. Then, the space-time steering vector of LFM is deduced by analysing the underwater echo of LFM. Fianlly, the performances of STAP for LFM and CW were compared by simulations. The results show that the proposed method of STAP for underwater LFM with narrower modulation bandwidth can achieve a better performance in target detection and estimate, and the processing gain of STAP for CW is higher than that of LFM form 1.6dB to 5.5dB with the modulation bandwidth from 100Hz to 600Hz. © (2013) Trans Tech Publications, Switzerland.


Hu Q.,Science and Technology on Underwater Information and Control Laboratory | Hao B.,China Shipbuilding Industry Corporation | Yi H.,Science and Technology on Underwater Information and Control Laboratory | Yang Y.,Science and Technology on Underwater Information and Control Laboratory
Advanced Materials Research | Year: 2011

Due to the high-speed, short-time countermeasure and small target strength of underwater high-speed small targets (UHSST), it is difficult to use a traditional method to accurately detect UHSST. So a novel passive detection model based on three-dimensional hyperbeam forming (3D-HBF) and fuzzy support vector data description (FSVDD) is proposed, where these advantages of beam width reduction and side lobe suppression for 3D-HBF and excellent target-detection capability for FSVDD are combined. The model consists of two stages. In the first stage, 3D-HBF is carried out to obtain the beam respond vectors (BSV) from original underwater acoustic signals. In the second stage, the BSV are input into the detector based on FSVDD to detect and locate the underwater targets intelligently. This model is applied to target detection of UHSST, and these testing results show that the proposed model has better detection performance than the conventional beam forming method, with a high detection success rate and localization capability. © (2011) Trans Tech Publications.


Li M.,Science and Technology on Underwater Information and Control Laboratory | Li M.,Xi'an Jiaotong University | Cao X.,Xi'an Jiaotong University | Wang L.,Xi'an Jiaotong University | Deng L.,Xi'an Jiaotong University
Proceedings - 2016 IEEE International Conference on Service Operations and Logistics, and Informatics, SOLI 2016 | Year: 2016

It has become an irresistible worldwide trend for manufacturing enterprise to be responsible for the whole life cycle of its products. Under the circumstance, the sustainability will be more comprehensive understood and more deeply considered in product design stage. This paper reviews the research on sustainable development, product lifecycle management (PLM) and product service system (PSS) briefly. A concept of product service lifecycle management is proposed. Then this paper analyzes the benefits of the combination of PSS and PLM within the circumstance of sustainable development. As for the realization of product service lifecycle management, the key technologies are shown. In the end, an application case in automobile is introduced, and the strategies on design stage are presented in detail. © 2016 IEEE.


Yang B.-M.,China Shipbuilding Industry Corporation | Yang B.-M.,Science and Technology on Underwater Information and Control Laboratory | Li W.,China Shipbuilding Industry Corporation | Li W.,Science and Technology on Underwater Information and Control Laboratory
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2011

Underwater combat is more and more complex in modern sea war environment. In order to improve an operational efficiency, it is necessary to improve the ability of target identification in underwater vehicle homing system. Acoustic image method is one of an important branch in target recognition and anti-counter measure fields, which helps the underwater vehicle to recognize the real target among fakes, to determine the crucial part of the target in complex combat fields. Main composing and implemental method of acoustic image simulation system were introduced, which was used in underwater vehicle. Real characteristic of target was obtained for forming the acoustical image of the target. Quadrature demodulation, plural multi-beam forming, image interpolation, image process technology were used to form the acoustic image. The experiment proves that this method has supplied an effective way for underwater vehicle to recognize, to attack the target efficiently.


Liu W.,Northwestern Polytechnical University | Liu W.,Science and Technology on Underwater Information and Control Laboratory | Li X.,Northwestern Polytechnical University | Li X.,Science and Technology on Underwater Information and Control Laboratory | And 2 more authors.
Applied Mechanics and Materials | Year: 2012

A gateway based on ARM is presented to achieve mutil-protocol conversion among different electronic control units. To guarantee its real-time ability and stability, the μC/OS-II embedded operation system was adopted. The first-in-first-out data queue is used to balance the communication rate among the different communication protocols which consist of the Controller Area Network, TCP/IP and RS-232. The gateway can be used in remotely manipulation between the console with Ethernet and remote underwater vehicle with other serial communication protocols. © (2012) Trans Tech Publications, Switzerland.


Lv W.,China Shipbuilding Industry Corporation | Lv W.,Science and Technology on Underwater Information and Control Laboratory | Wang Z.,China Shipbuilding Industry Corporation | Li J.,China Shipbuilding Industry Corporation | And 7 more authors.
2012 5th International Congress on Image and Signal Processing, CISP 2012 | Year: 2012

In order to compare the performances of STAP for the underwater LFM with CW signal, the method of STAP for LFM was proposed. First, the principle of STAP for CW was analyzed, according to the underwater echo of CW. Second, the space-time steering vector of LFM is deduced by analysing the underwater echo of LFM. At last, the performances of STAP for LFM and CW were compared by simulation. The results show that the proposed method of STAP for LFM can achieve the good performance in target detection and tetection, but CW has the superiority in the performance of STAP. © 2012 IEEE.


Lu W.,China Shipbuilding Industry Corporation | Lu W.,Science and Technology on Underwater Information and Control Laboratory | Wang Z.,China Shipbuilding Industry Corporation | Li J.,China Shipbuilding Industry Corporation | And 7 more authors.
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | Year: 2012

In order to use the power spectrum propagation characteristics and adopt the theory of STAP for reverberation suppression and moving object detection, an improved method of STAP for sonar is proposed. Firstly, the principle of STAP is analyzed according to the echo model of radar. Secondly, comparing the echo models of sonar and radar, this method of STAP is presented and the Space-time coupling steering vector is used in space time processing. Finally, the proposed method of STAP is applied in space time processing and object detection. Simulation results illustrate that the modified method of STAP is beneficial to underwater object detection, and that applying the space-time coupling steering vector can increase the accuracy of the direction estimation of targets.


Lv W.,China Shipbuilding Industry Corporation | Lv W.,Science and Technology on Underwater Information and Control Laboratory | Wang Z.,China Shipbuilding Industry Corporation | Li J.,China Shipbuilding Industry Corporation | And 7 more authors.
Proceedings - 2012 International Conference on Computer Science and Electronics Engineering, ICCSEE 2012 | Year: 2012

In order to use the theory of space-time adaptive processing (STAP) in Sonar, an improved STAP for sonar was proposed. Firstly, the principle of STAP was analyzed according to the echo model of radar. Secondly, comparing the echo model of sonar with radar, the improved STAP was presented and the space-time coupling steering vector was used in space time processing. Finally, the improved STAP was applied in space time processing and objective detection. Simulation results illustrate that the improved STAP is beneficial to underwater objective detection, and applying Space-time coupling steering vector can improve the accuracy of the direction estimation of target. © 2012 IEEE.

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