| 摘要 |
PURPOSE:To attain the frame synchronism of a transmitted characteristic parameter value without any frame synchronizing circuit, by transmitting a hopping period and a transmission period of the characteristic parameter while keeping the relation of an integer multiple. CONSTITUTION:Frames F1, F2, F3 accommodate characteristic parameters a1, b1, c1, n1, a2, b2, c2, n2, a3, b3, c3, n3 in a frame train of the characteristic parame ters. The code train of a code M controlling the frequency hopping synchronizing with each frame of the characteristic parameters is transmitted by using the frequency hopping system for the secondary modulating system. The transmission is performed in this case so that the hopping period and the transmission period of the characteristic parameters are made coincident. |
