An Object Oriented Approach to Automatic Radio Tuning

摘要

The diagrams in Figures 4 and 5 follow the Unified Modeling Language (UML) guidelines. UML is a proposed industry standard and is available for free on the World-Wide-Web. Please see the references. UML provides guidance on the types of diagrams and their presentation. Many types of diagrams are available beyond those used in this paper.This paper presented an object-oriented analysis of a basic automatic radio tuning system including frequency tracking and Doppler-shift compensation of the radio links.In addition to the basic tuning and Doppler-shift compensation, a number of other features would contribute considerably to ease of use and operator convenience. Some examples of these include:1. Automatic setting of receiver frequency and mode (CW, USB, LSB, FM, etc.) to satellite beacon.2. Automatic setting and tracking of transmitter mode.3. Support for up and down frequency converters4. Support for satellites with multiple transponders like RS-12 mode K/T.