Vojnotehnicki glasnik / Military Technical Courier

397-404

Authors: Ugarak Dragoslav

This paper represents the mathematical model of determining the proximity fuze activity height by processing video shot. The errors' sources and contribution of effective parameters have been analysed. The values of standard deviation, standard error and reliability interval are defined.

415-423

Authors: Elezović Miroslav, Đorđević Dragan

Testing immunity on transient disturbances in main supply of information electronic equipments includes Electrostatic discharge immunity test, Electrical fast transient/burst immunity test, Surge immunity test and Voltage dips, Short interruptions and Voltage variations immunity tests. In this paper we performed theoretical analysis of the source, appearance mechanism and consequence of electrical fast transient/burst, and experimental work for Electrical fast transient/burst immunity test of electronic equipments.

435-447

Authors: Lazarević Milan, Bajčetić Jovan

The importance and very quick development of telecommunications ask for endless research and applying new services and new methods of integration and switching in it. Among commercial radio services that are at the moment accessible in our state, the most significant pan is from public mobile telephony system. In this work we presented organization and way of functioning of mobile switching system and their place and importance in Serbian system of communications. WiMAX service of mobile telephony is processed in details and advantages and disadvantages versus 3G mobile service are analyzed. The suggestion of implementation of WiMAX in modern system of telecommunications is given.

460-464

Authors: Vuletić Dejan

In this article basic notions of management data security are analyzed. We indicated demand and importance of standardization in information-communication technology domain, especially according to International Standardization Organization. In the final part of the article we illustrated both proactive and reactive activities in management data security.

475-488

Authors: Gordić Radomir S.

Safety in military traffic and its management depends on the reaction time of military drivers. Military drivers are a selected group of soldiers, so it is considered that their reaction time is shorter than the reaction time of general drivers population and it is also shorter than the normative reaction time, which is used in the analyses. Therefore, the stopping time of military drivers was tested, in aider to see the influence on traffic safety and management of traffic courses, and to interest the professionals in the given results. In the essay results of stopping time in the real conditions for a random chosen group of military drivers are shown.

280-294

Authors: Ugarak Dragoslav

This paper presents mathematical model of target tracking based on angle and target range determination by analyzing video frames during the tracking. The multiple model approach is performed using Kalman filter, and estimation and target motion prediction accuracy is determined using concrete example.

305-322

Authors: Manjak Mladen

Conventional FM radio broadcasting can offer additional services by means of a subcarrier placed in a clear part of the beseband multiplex signal. This paper contains elementary characteristics of DARC service conventional FM radio broadcasting and possible applications.

335-341

Authors: Ostojić Dušan, Brkić Dragoljub

In this paper, the approximative method for determination the reliability and availability of a telecommunication system is described. This approximative method is based on the Monte Carlo method. For this purpose, the specially computer program was developed, by which the validity of this proposed method was verified. Application of this method is illustrated by one example.

348-353

Authors: Anđelković-Lukić Mirjana

Pyralen is used as a cooling fluid in high voltage electrical transformers. It belongs to a group of the most dangerous polluters of the environment. In the article it is presented pyralen's physical and chemical characteristics, procedures of decontamination and procedures in cases of leaking of pyralen from package or transformers, as well as procedures of firefight on pyralen and pyralen transformers.

141-150

Authors: Ugarak Dragoslav

This paper specifies cinematic models of target range estimation based on analyzing video frames during the tracking. The influences of process noise on range estimation accuracy are analyzed, and adaptive estimation method by noise level adjustment is nominated.

160-167

Authors: Radosavljević Zvonko

This paper compares two algorithm for Multiple Target Tracking using Global Nearest Neighbor (GNN) approach: first by the use standard Kalman filter (SKF-GNN) and second by the use Interacting Multiple Model (IMMGNN) in order to derive final tracking estimation. For both algorithms the observations are divided in clusters to reduce computational efforts. Results of simulations by tracking 20 targets simultaneously reveal that in some cases the IMMGNN approach gives better solution then KF-GNN approach. The computational time for assignment problem solution for maneuvering target tracking using both algorithm is studied and results prove that is IMMGNN suitable for real time implementations.

181-190

Authors: Jeremić Radun

Commercial explosives are used for mining in main, quarries, construction of road and railway-track, building demolition and for special purpose as metal -welding, seismic investigation etc. In this paper a shot historical overview of commercial explosives development is given and presented properties and use of some compositions that have the greatest practical importance in our country and in the world. The "Power-deck" method for quarrying optimization, using for explosive consumption decreasing, also is presented.

202-213

Authors: Gordić Radomir S., Jovanović Boriša, Alfirević Đuro

During the planning and practical realization of Serbian & Montenegro units' tasks a problem -which often occurs is choosing an optimal transport route between two places (nodes). Optimization criteria can be various. This project should enable quick and easy defining of an optimal route, applying dynamic programing (DP) using Bellman's algorithm depending on chosen criteria - parameter. Optimization criteria represent minimum movement time (traveling), which are taken from imitational modeling of a traffics queue flow. Operating algorithm enable choosing an optimal transport route, for any two nodes on a road map.

227-233

Authors: Prodanović Goran

The topic of this text is demarcation and denoting of the 5 section of the border between Serbia and Montenegro and Republic of Macedonia (especially geodetic survey indispensable for these labors), -which members Joint Working Group of Serbia and Montenegro from Military Geographic Institute carried out.

5-14

Authors: Ugarak Dragoslav

This paper presents mathematical model of determining target range by analyzing video frame during the tracking. The contribution of effective parameters to accuracy are analyzed and values of standard deviation are determined.

22-34

Authors: Bondžulić Boban, Barbarić Žarko

In this paper the approach for movement detection is described. The approach is based on background subtraction and temporal differencing. To overcome problems with these two techniques, a hybrid algorithm for change detection is described. A hybrid algorithm is a combination background subtraction technique with a frame differencing technique. In this paper the method for background extraction is described, too.

49-58

Authors: Unković Milovan

The Doppler maritime navigational logs are based on measurement of the Doppler effect. A Doppler log transmitting transducer emits beam of sound vibration in the water, and a second (or the same) transducer receives the echo from the sea bed or -water layer. In this article describes theory of Doppler effect, using this theory in maritime logs, construction and performance of modern Doppler logs.

74-80

Authors: Vukobrat Željko

A theoretical model for determining the voltage output signals of the position-sensitive receiver is developed and verified experimentally. A quadrant detector is used for converting light energy into electrical energy. The quadrant detector has four independent and equal photodiodes on the sensing surface. A correctly focused symmetrical laser or optical beam will form a circular spot on the detector's active surface after passing through the lens. The photodiodes are connected to a voltage source via resistors. A photoelectric current generated in the photodiode causes a voltage drop across the associated resistor and thus provides an output signal. The signal detected by each photodiode of the quadrant detector is proportional to the area of the light spot image on the photodiode. The derived theoretical model enables a quick and correct analysis of experimental results, that is the base of the checking of technical requirements of preliminary project design of the position-sensitive optical receiver for defined purpose. The experimental results show the excellent agreement -with theory.

88-96

Authors: Prodanović Goran

Knowledge of mathematical transformation models that can present value of vector of geomagnetic field is very important. Defining coefficients of transformation functions provides presentation of disposition value of geomagnetic field on defined space. This article presents geomagnetic field, Gauss' method of analysis of geomagnetic field and using least square method to solve system of equations of normal values geomagnetic field.

102-112

Authors: Stamenković Predrag

Motorcycles used in traffic direct and control units in the Military of Serbia and Montenegro should have such technical and operational characteristics that -will completely meet strict demands for directing and controlling military traffic and that -will improve the quality of traffic support in modern combat conditions. It is important to discuss characteristics of a motorcycle and demands it has to meet -when choosing "optimal" motorcycle model. This paper shows model of motorcycle choice using Promethee method of multiple ranging criteria.