Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Ogrodniczak J.

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: przetwarzanie danych batymetrycznych

Sortuj według:

Ogranicz wyniki do:

Metody przyrostowe w przetwarzaniu danych batymetrycznych - analiza błędów przetwarzania dla zaproponowanych modeli matematycznych

Ogrodniczak J.

Roczniki Geomatyki

2007

T. 5, z. 3

105-112

In the papers [1, 2] mathematical models using incremental methods in processing of information about the course of variability in the shape of sea bed along the measurement profile were proposed. These models were implemented in author.s application and served simulation tests. The results of the tests were used for comparisons and for assessment of possibilities to use them in the case of various shapes of the seabed. 1. Janusz Ogrodniczak, "Metody przyrostowe w przetwarzaniu danych batymetrycznych-kryteria oceny dokładności dopasowania przebiegu aproksymującego do sygnału wejściowego., (Incremental methods in the bathymetric data processing . accuracy criteria for the approximation of input signal) Roczniki Geomatyki (Annals of Geomatics) 2006, Vol. IV, Number 3, Warszawa. 2. Janusz Ogrodniczak, "Incremental Methods in Bathymetric Data Processing - Bathymetric Data Quantisation", Advances in Transport Systems Telematics, Section III, Chapter 10, Katowice, 2006.

Metody przyrostowe w przetwarzaniu danych batymetrycznych – kryteria oceny dokładności dopasowania przebiegu aproksymującego do sygnału wejściowego

Ogrodniczak J.

Roczniki Geomatyki

2006

T. 4, z. 3

165-170

The possibilities to use delta modulation based incremental methods in the bathymetric data processing are described in this paper. The bathymetric data is a geo-referenced depth data. The depth measurement is made in fixed time intervals so it could be assumed that it is a kind of a signal. Contemporary survey systems provide users with huge amount of data. In the paper it is decided to incorporate the delta modulation into the bathymetric data processing as a method of reducing the amount of the bathymetric data to be transmitted or stored. The delta modulation is a technique taken from signal processing. It is usually used to process electric signals so comparison of voltage levels at the sampling time is the criterion. When considering series of the bathymetric data as a signal, some of the ideas from terrain modeling were adapted to the delta modulation based system. Hence, additional two criteria are taken: a difference between the slope of approximation and the slope of the sea bottom shape and the distance between curves represented by the approximation and the sea bottom shape.