NAVIGATION AND HYDROGRAPHY ¹35/2013
On Maritime Doctrine of the Russian Federation for the Period of up to 2030 and Concepts of the Federal Law of State Management of the Maritime Activities. A. F. Zenkov, A. I. Ismailov – Navigation and Hydrography. – 2013. – No. 35. – Ð. 8–17.
The main results of forming the Maritime Doctrine of the Russian Federation for the period of up to 2030 are considered. The role played by GNINGI in its forming is described. The main directions of forming the Federal Law of the state management of the maritime activities are presented.
Key words: maritime doctrine, national maritime policy, maritime activities, naval activities, regional directions, functional directions, safety of maritime activities, state management of maritime activities.
Removal of Limitation of Antijamming Capability for Satellite Navigation System Receivers due to Odd Number of Ranging Code Symbols in Epoch. Y. S. Dubinko, P. I. Maleyev, A. N. Soloshchev – Navigation and Hydrography. – 2013. – No. 35. – Ð. 18–23.
The method used to remove the antijamming capability limitation of SNS receivers due to odd number of ranging code symbols in epoch because of meander modulation of the receiver input signal (or replica in correlator) is considered. The meander is introduced at the receiver input and, if necessary, can be easily removed by reverse conversion before formation of auto- and cross-correlation functions. Removal of antijamming capability limitations by balancing the code in the receiver allows the practical invulnerability of GLONASS to jamming to be provided.
Key words: receivers of satellite navigation systems, pseudorandom sequence, recurrence period of ranging code (epoch), antijamming capability limitation.
Methodology of Evaluation of the Efficiency of the Use of Adaptive Information-measuring Navigation Systems. A. D. Golyakov, I. V. Fominov – Navigation and Hydrography. – 2013. – No. 35. – Ð. 24–29.
The methodology of evaluation of the effectiveness of the use of adaptive information-measuring systems to provide the navigation and hydrographic support for maritime activities is considered. Results of the investigation of the effectiveness of the example of adaptive information-measuring navigation system containing the main and additional means of measurement and the adaptation are presented.
Key words: navigation-hydrographic support, adaptive information-measuring systems, efficiency, performance indicators.
Methodical Aspects of Design Work Intended to Provide the Navigation Safety under the Present-Day Conditions. A. A. Lobanov, Y. V. Rumyantsev, D. M. Bukhov – Navigation and Hydrography. – 2013. – No. 35. – Ð. 29–38.
The problems connected with design of the shipping routes, taking into account the changes in the interagency sphere of the Russian Federation and IMO requirements to accuracy standards of ship navigation are considered. The legislative and normative documents for designing the shipping routes at the current stage are presented. The methodical schemes for the main design stages and standard composition of the design documents are suggested. The conclusion is drawn about the necessity to develop new documents or to correct the existing ones in the sphere of designing the shipping routes, based on the presented methodical approaches.
Key words: shipping routes, IMO, navigation safety, normative and legislative basis, the guiding documents, analysis, methodical schemes, the International Law of the Sea.
Substantiation of Requirements to Navigation Support for Underway Measurement of Current Velocity by Acoustic Doppler Current Profiler. E. S. Zubchenko – Navigation and Hydrography. – 2013. – No. 35. – Ð. 39–52
Based on modeling the underway current velocity measurement error by acoustic Doppler current profiler, the necessary measurement accuracy for the vessel¢s angles of motions, course and speed, is evaluated. It is shown that the required accuracy for the vessel¢s absolute speed can be obtained by using the modified algorithm for calculating the speed of an object in SNS receivers. It is based on presenting the difference of consecutively measured carrier phases as an object movement vector, taking the movement of the receiver antenna due to the vessel¢s motions into account.
Key words: error, accuracy, measurement, speed, velocity, satellite navigation system (SNS), receiver, profiler.
On Acceptable Value of Error for the Position of Sounding in the Detailed Survey. N. A. Nesterov – Navigation and Hydrography. – 2013. – No. 35. – Ð. 53–58.
The necessity to specify the requirements for accuracy of determining the position of sounding when carrying out the engineering explorations in shallow water is shown. The requirements for provision of more exact value of error for the position of sounding depending on its measurement error value are substantiated.
Key words: multi-beam echosounder, error, detailed survey of sea bottom relief, horizontal and vertical uncertainty.
Automated Method of Computing the Lines of Watersheds and Thalwegs. Y. N. Zhukov – Navigation and Hydrography. – 2013. – No. 35. – Ð. 58–64.
The problem of finding the structural lines of the bottom relief by the depth point data array, using the computer calculations, is considered. It is shown that this problem can be correctly solved based on the combinatorial topology algorithms if the depth data array is presented in the form of the Morse discrete function.
Key words: structural lines of relief, Morse discrete function, separatrix.
Algorithm of Calculating the Phases of Tidal Cycles (Water Clock). Y. N. Zhukov – Navigation and Hydrography. – 2013. – No. 35. – Ð. 64–69.
The problem of calculating the water clock for the specific point, the Island of Sosnovets, is considered. To solve this problem, the tide prediction by the harmonic constituents followed by the calculation of Gilbert conversion is suggested to be used. The algorithm presented here allows the values of the water clock to be calculated in the mean solar time at an accuracy to one minute.
Key words: water clock, phase of tide, Gilbert conversion.
Situational Approach in the Methodology of Mathematical Modeling of Decision-making in the Interests of Navigation and Hydrographic Support. V. N. Zavgorodny – Navigation and Hydrography. – 2013. – No. 35. – Ð. 70–74.
An approach to the choice of mathematical criteria based on the classification of information situations that can be useful for a wide range of tasks of navigation and hydrographic support for the naval forces is considered. Partition of information into the classes of situations is carried out according to the degree of uncertainty of information available to the command at the time of the decision-making.
Key words: complex systems, decision support, multi-criteria problems, efficiency criteria.
Method of Evaluation of the Standard Hour Cost for the Work of the Research Organization with Budgetary and Commercial Financing. N. A. Slavina – Navigation and Hydrography. – 2013. – No. 35 – Ð. 74–79.
The method of evaluating the standard hour cost of the work in a research organization by commercial contracts and state defence orders is considered. It is shown that the value of the standard hour cost for commercial contracts is to exceed the standard hour cost for the state contracts.
Key words: standard hour cost, state defence order, state contract, commercial contract, equilibrium state, accounting of expenditure, price formation, dedicated use of finance.
Lighthouses of Lake Ladoga. V. I. Koryakin – Navigation and Hydrography. – 2013. – No. 35. – Ð. 80–98.
The history of creation of the lighthouses of Lake Ladoga, their aim, specific features of construction and employment, including the period of the Great Patriotic War, is considered.
Key words: lighthouse, Lake Ladoga, merchant vessel, naval ship.