{"title":"Computation and evaluation allan variance results","authors":"Miroslav Matejček, M. Šostronek","doi":"10.1109/NTSP.2016.7747786","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747786","url":null,"abstract":"This article deals with Allan variance as useful method for noise performance evaluation of inertial sensors which are used in inertial measurement unit (IMU) and different guidance systems. The noise component of inertial sensors is important part from group of inertial sensors errors, which determines accuracy of inertial navigation systems in real time. Because inertial measurement unit consists from accelerometers and gyroscopes, all sensor errors influence the position determination accuracy. Trajectory length is estimated from double integral of measured acceleration, therefore the error of length trajectory determination is increased rapidly. Gyroscope errors influence measured direction of movement. Knowledge of inertial sensor errors and their changes in time is necessary to increase the inertial navigation accuracy. Inertial sensor stochastic errors could be estimated in time or frequency domain. Allan method is based on the computation of root mean square random drift error as a function of average time [1], [2]. Allan variance (AVAR) could be computed in different way as, nonoverlapped AVAR, not fully overlapping AVAR, fully overlapping AVAR, total variance and modified total variance [1]. Main part of this article deals with design of simplified AVAR computation and simplified AVAR computation performances are evaluated.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126651481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis and decoding of radio signals for remote control of drones","authors":"Michal Haluza, J. Cechak","doi":"10.1109/NTSP.2016.7747781","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747781","url":null,"abstract":"The article discusses the possible means of analyzing radio signals used to control drones - Unmanned Aircraft or Aerial Systems (UAS) through the Analysis and Classification of Radio Signals (AKRS) system; it also includes a description of the physical layer of the selected, most popular protocols and introduces the possibility of decoding the received data, identification of the radio device and interpretation of transferred information. The conclusion considers the possibility of using the obtained information to take control of an intruder.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122848049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hilbert-huang transform and its application in seismic signal processing","authors":"R. Berešík","doi":"10.1109/NTSP.2016.7747776","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747776","url":null,"abstract":"The detection of targets in military and security applications involves the usage of sensor systems which consist of a variety of sensors such as seismic, acoustic, magnetic and image ones as well. In order to extract signal features, which characterize particular targets, using of appropriate signal processing algorithms is required. Seismic signals can be considered as nonstationary and nonlinear signals especially in near-field seismic zone. Most of the signal processing algorithms assumed that signals are linear and stationary. However, in many cases this assumption is not valid, especially in case of seismic signals generated by moving vehicles, walking persons or gunfire activity. There are several methods which can be used for seismic signal processing, like short-time Fourier transform (STFT), Wavelet transform (WT) and Wigner-Ville distribution (WVD). The paper presents the concept of the seismic sensor system based on Micro-Electro-Mechanical-System (MEMS) sensor SF1500S. A dedicated to vehicle detection. The main part of the paper deals with application of the Hilbert-Huang transform (HHT) to seismic signal processing in time and time-frequency domain. In conclusion, the outcomes of experiments provide comparison of HHT and STFT efficiency in terms of seismic features description of moving vehicle.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123635627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synchronization of two tree parity machines","authors":"Martin Javurek, M. Turčaník","doi":"10.1109/NTSP.2016.7747782","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747782","url":null,"abstract":"One of the problems of cryptography based on the tree parity machine is how to recognize that two tree parity machines are synchronized. In this paper, one of the possible solutions based on polynomial function is described. The proposed method is focused on obtaining of one unique number by polynomial function. Consequently, two possible forms of an attack on the number are presented. The first one is based on brute force attack and the second is done by using genetic algorithm.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121476736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tomáš Volčko, V. Moucha, P. Lipovský, K. Draganová
{"title":"Possibility of usage the latest GSM generations for the purpose of UAV communication","authors":"Tomáš Volčko, V. Moucha, P. Lipovský, K. Draganová","doi":"10.1109/NTSP.2016.7747794","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747794","url":null,"abstract":"The communication link between the unmanned aerial vehicle and its ground station is a critical part of the complete unmanned aerial system. Nowadays, there are several kinds of the communication interfaces with different parameters such as operational frequency, data throughput, transmitting power etc. This article deals with the possibility to use the latest generations of mobile telecommunication systems, specifically 3th generation and 4th generation, for the purpose of the unmanned aerial vehicle communication interface.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122411807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modified LEACH protocol for heterogeneous wireless networks","authors":"Amr Amwary, D. Maga, T. Nahdi","doi":"10.1109/NTSP.2016.7747774","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747774","url":null,"abstract":"Wireless sensor networks have strict constrains in size, weight and energy. The conflict of long lifetime and strict energy constrain brings a natural integration of energy harvesting into wireless sensor networks. A modified low energy adaptive clustering hierarchy (LEACH) protocol has been proposed to increase the network life time. Modified LEACH is divided into two main phases at the first setup phase and at the second steady state phase. Setup phase has been modified such that cluster head (CH) selection will be selected only from advanced nodes. Results showed significant improvement in WSN overall lifetime. Simulations show number of dead nodes vs rounds. Comparison between pure LEACH and modified one showed significant improvement in lifetime, also comparison between modified LEACH and energy aware multi-hop multi-path (EAMMH) protocol shows significant improvement in performance.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116324399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correlation-based TDOA algorithm for the target localization at low signal to noise ratio","authors":"Z. Matousek, M. Babjak, J. Ochodnicky","doi":"10.1109/NTSP.2016.7747787","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747787","url":null,"abstract":"The operation algorithm of a multilateral time difference of arrival intelligence system, which enables to locate and to pursue the targets at the low signal to noise ratio at the output of intermediate frequency amplifier, is proposed in the paper.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124183728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Stankovic, Stojadin M. Manojlovic, Slobodan M. Simic, Srdjan T. Mitrović, M. Naumovic
{"title":"FPGA-based system level design of control systems: A case study of three-axis positioning controller implementation","authors":"M. Stankovic, Stojadin M. Manojlovic, Slobodan M. Simic, Srdjan T. Mitrović, M. Naumovic","doi":"10.1109/NTSP.2016.7747790","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747790","url":null,"abstract":"In this paper Field Programmable Gate Array (FPGA) system level based methodology for control system design is proposed and described in details on the case study of three-axis positioning controller implementation. System level design tool, such as Xilinx System Generator (XSG), provides Simulink based FPGA design and automatic converting of XSG model into efficient Very high speed integrated circuit Hardware Description Language (VHDL) code, increasing productivity by reducing the design time. The optimal design, in terms of FPGA recourse occupancy, is provided using restructuring data flow graph (DFG) of control algorithm and specifying the optimal fixed-point format. The proposed approach is validated through real experiments on three-axis didactic radar platform.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128304949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xuan Luong Tran, J. Veselý, Sang Van Doan, P. Hubáček
{"title":"UHF/C-band testing of AOA estimation using MUSIC algorithm","authors":"Xuan Luong Tran, J. Veselý, Sang Van Doan, P. Hubáček","doi":"10.1109/NTSP.2016.7747792","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747792","url":null,"abstract":"This paper presented a study of direction of arrival estimation using multiple signal classification algorithm on two frequency bands (UHF-band and C-band). The used algorithm in the paper is one of the superresolution direction of arrival estimation algorithms and it was simulated to analyze the effects of various parameters on the direction of arrival accuracy and resolution. Then, the measuring workplace was established to verify the results of the simulation. In the practical measurement, two 4-element uniform linear arrays were used to estimate the direction of arrival of the noncoherent signal sources for the different frequency bands. The measured signals were processed in the Matlab using multiple signal classification algorithm for direction of arrival estimation. The measurement system estimated the direction of arrival of the signal in the UHF-band with accuracy around 4° and resolution around 10°. In the C-band, the accuracy and resolution of direction of arrival estimation were around 3° and 10° respectively. In comparison, the measurement results were a bit different from the simulation due to environment condition of measuring workplace.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134641072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Stability testing of hybrid DT+CT systems","authors":"D. Biolek, Z. Kolka, V. Biolková","doi":"10.1109/NTSP.2016.7747777","DOIUrl":"https://doi.org/10.1109/NTSP.2016.7747777","url":null,"abstract":"Unstable behavior of discrete-time systems cooperating with continuous-time sub-blocks is analyzed. Typical examples are the instabilities in convolution digital filters operating in feedback loops together with AD and DA converters, analog anti-aliasing and smoothing filters, and other application circuits. It is shown that the stability of such systems can, in linear cases, be tested via the location of z-domain poles of an associated transfer function, and that the poles depend not only on the algorithm of digital filter but also on the sampling frequency and the parameters of analog circuitry. A methodology of the stability analysis via the SPICE-family simulation programs is presented.","PeriodicalId":232837,"journal":{"name":"2016 New Trends in Signal Processing (NTSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134062756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}