Vol 10, No 2 (2012)

In the article discusses the possibility of monitoring the height information of objects on the Earth’s surface, obtained by two-pass, space interferometer SAR X-band frequencies. In the study, the experimental estimation of the error in determining the relative height of the relief surface of the Earth by satellite data TERRASAR-X. The possibilities of determination you-hundred buildings on the SAR phase information. This technique is illustrated by relevant examples. We discuss the possibility of monitoring information changes the height of objects on the earth’s surface, obtained by multi-pass, space differential interferometer.

To date, a number of measurement exist of devices, based on the work which are certain methods of image processing. Examples of such devices, random-tain triangulation scanners. The main problem faced by the image processing of the obtained with these devices is to compensate for interference-discriminatory distortions. This type of distortion leads to a sharp increase in uncertainty. To combat this negative phenomenon is proposed to use methods of blind treatment, in particular algorithm zero sheet.

The soft decoding procedure of signal-sequence with turbo-trellis-coded modulation in channels with intersymbol interference is considered. The peculiarity of the decoder is the use of trellis-decision-feed-back with rib-metrics-computing, estimation signal-amplitudes, as well as a priory knowledge about the interchange on signal-amplitudes between MAP-decoders.

The article compares the serial and parallel algorithms for processing large volumes of information to improve the efficiency of performance analysis of radio operators in a complex system of ground-based information processing, discussed improving performance when reading data from disk using the pipeline.

In paper the procedure of determination of number of bits of a binary code is considered at quantization of coefficients of a transfer function of the digital filter ensuring a required capabilities to an exactitude of an amplitude-frequency characteristic. The procedure of an evaluation of the absolute error of the pulse response appearing owing to limitation of number of bits is reduced.

In article use alternative method by definition of economic efficiency of working out and introduction of an information system - method of Felix-Riggs.

This paper contains a description of the application domain and initial conditions for statistic imitation method (SIM) of characteristics of the field antenna array, which consists of three rectangular apertures. This array is excited by a random signal and represents a aperture random antenna (RA). The results of investigations by SIM of the statistical characteristics of the field intensity aperture RA are presented in this article. Distribution of amplitude and phase errors are considered uniform in a specified sufficiently wide range. The technique SIM is based on the application of the Monte Carlo method, this technique uses, developed by the authors, a new procedure of «raffle» random errors with arbitrary distribution.

In the article the authors formulate a number of requirements for frame synchronization and specify them for a system of group synchronization in digital audio broadcasting.

Principles of protection the information based on creation of several barriers are considered: cryptographic, steganographic, algorithmic and existential dispersion.

The variant of group expert survey methodic for the aim of chosen components of IT-infrastructure (as a typical task of administrative management) are proposed in the article. Methodic suggests the generation of using private parameters of common criteria and account experts qualification by this private parameter.