| 摘要 |
FIELD: radio engineering. ^ SUBSTANCE: device of automatic searching for radio communication channels comprises a receiver, a signal converter, a decoder, a frequency commutator, a trigger unit, the first unit of "AND" elements, an N-input element "OR", a shift register, the second unit of "AND" elements, the first encoder and the first memory unit. The novelty in the device of automatic searching for radio communication channels is a control unit, a unit of "OR" elements, a comparator, N-reverse registers, a polling unit, the second decoder, the second memory unit and the reading unit. The device implements the logic of double-staged searching for optimal channels. In the device the time for preliminary analysis of these channels is 0.5 sec. To make a final decision on channel quality, the second stage of inspection is necessary within the time T in accordance with the preset procedure of noise voltage increase. The total time required to find an optimal channel makes not more than 1.5 sec. In average such searching procedure makes it possible to reduce time for searching of optimal channels 1.5Ç2.4 times compared to devices that implement the serial viewing of channels. The device provides for increased reliability of optimal channel selection due to double-staged analysis. ^ EFFECT: higher efficiency of selecting an optimal communication channel by double-stage inspection of redundant channels. ^ 4 cl, 4 dwg |
