The pressure of the fluid flowing in each branch pipe of is measured(S200). The pressure of the fluid flowing in the branch pipes is regularly adjusted through a proportional control method(S300). The temperatur
(S100) Obtaining phase differences between two antennas facing each other for each separate distance; (S200) Calculating a phase difference error for each separate distance; (S300) Performing Euler angular transformation for the phase difference for each separate distance; (S400) Calculating the ...