科學勘查與化解 (一)

•公式計算法 (Calculation Method)
–Antenna gain of the emitter under test
–Isolator attenuation
–Transmission-line loss of the emitter under test
–Transmitting output power of the emitter under test
–Propagation loss
–Calculate individual power by using rule-of-thumb propagation model
–Summate the powers
–Error analysis: Using wrong propagation model may generate error.
•儀器直接量測法 (Direct Method to Test)
–Testing sensor or antenna
–Testing cable or transmission-line
–Testing instrument to measure power or power density from testing sensor or antenna
–Measure individual powers, or measure individual power densities and derive respective powers from them
–Summate the powers
–Subtract of the power without isolation from the power with isolation
–Error analysis: if either the sensitivity of power test instrument is not sufficient or if the resolution of power density test instrument is not sufficient, then the measurement which uses either one may generate error.