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The main task of DVB-T2 broadcasting is provided subscribers with high quality services. Quality of Service (QoS) indicator characteristics for terrestrial digital television broadcasting when the signal is distributed over the air are considered in the paper. An experiment was carried out to organize the required reservation of broadcasting equipment. DVB- T2 transmitter “Polaris TVC”, local content inserter TTV-PLPSW-0401 and universal analyzer Enensys Referee were use in experiment. The T2-MI inserter output stream file has been written when the device reserves a local stream to a national stream. There was also a record of events when the transmitter reserves the main stream as a backup. The timing diagrams are presented based on the types of errors that occurred when the inserter and transmitter were reserving input streams. The numerical values of the SAE, SDE and SIE parameters are determined for the case of the reservation of the local T2-MI stream by the tie-in device (ETSI TS 102773) and the DVB-T2 transmitter of the main stream - the reserve one. The results were evaluated by perceived quality of service (pQoS), as well as by calculating the boundaries of confidence intervals.

the article discusses the features of the synthesis of images of artificial objects with the aim of their search and recognition in the vision system of an underwater robot. The results of research and development to given: a database - a classifier of features that allows you to store information about the reference underwater objects; software module for generating images of reference objects and their insertion in a sonar image file. In the modeling program for the synthesis of underwater objects in the HBO image, the algorithms for introducing objects used by taking into account the peculiarities of the formation of HBO images by sonar. The program allows implementing several objects of spherical, cylindrical and cubic shapes with specified parameters, which allows simulating the situation of search for an artificial object according to given geometric features against the background of other objects. The developed software allows simulating underwater objects according to the characteristics close to real objects with the help of their preliminary processing and subsequent implementation in real HBO images

Pulse-phase radio navigation systems operating in the low frequency range used to perform the task of backing up global navigation satellite systems because of their vulnerability to random or targeted interference. First part of this paper indicates the need to build equipment to simulate these systems. The paper introduced an algorithm for generating complex-shaped radio pulses with adjustable parameters using low-resolution DACs. This algorithm allows the simultaneous generation of up to three radio navigation systems with a wide dynamic range of radio pulses amplitudes. Each of the emulated systems can operate according to a separate national standard. The dynamic range of simulated pulses amplitudes is provided exclusively by the digital method. Proposed algorithm allows to achieve high signal power to quantization noise power ratio even with maximum digital attenuation. The shape of the generated radio pulses fully complies with the requirements of the standards. Simulation equipment will significantly accelerate the development and testing of innovative low-frequency receivers.

The article discusses the segmentation algorithm of digital image based on the measurement contrast of fine detail in the normalized CIELAB system. Using normalized CIELAB system allows you to segment fine detail in accordance with the contrast sensitivity. Focusing the camera is carried out on the basis of the search of function maximum that determines the dependence of the number of segmented fine detail from the focal length. Proposed software as part of an interactive digital camera control system implements this function. The results of experiments and comparative analysis with other methods focus are given. It is shown that the proposed method improves the accuracy of the focus when photographing images in low light.

In this paper we present a novel assessment method of fine-details level (FDL) of photorealistic images. The method is based on the search algorithm and recognitions of fine-details in the normalized color space. The novel image metric allows evaluating quantity of fine-detail fragments which are noticeable an eye. Results of an assessment of method stability to distortion factors are given and applications in the multimedia system are discussed.