| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure a delay profile at a high-speed. SOLUTION: A/D converters 11, 12 of this radio wave propagation measurement device sample and convert analog I and Q component signals demodulated by an orthogonal demodulator into a digital signal. DSPs 15, 16 apply a prescribed correlation processing arithmetic operation to the digital signal after sampling, and write the arithmetic result to memories 24 to 27. The arithmetic result written in the memories 24 to 27 is read according to a read address outputted from an address counter 2. The read address outputted from the address counter 2 is fed to the memories 24 to 27 that are not in write operation by the DSPs 15, 16. The arithmetic result read from the memories 24 to 27 is outputted to a memory 30 as an address, in which the address is converted into a signal equivalent to a square sum of the I and Q component signals and the converted signal is outputted to a monitor. |
