Table 9 The ratio values for different groups.
From: Non-contact measurement method of liquid composition using microwave radar cross-section
Categories | X(m) | \({{\varvec{\sigma}}}_{{\varvec{d}}{\varvec{B}}}^{1}\) | \({{\varvec{\sigma}}}_{{\varvec{d}}{\varvec{B}}}^{2}\) | Y2 | Y1 | |
|---|---|---|---|---|---|---|
Ceramic jar | Spoiled rice wine 1 | 1.7 | −33.40 | −27.73 | - | 0.27 |
Spoiled rice wine 2 | 1.75 | −39.57 | −31.45 | - | 0.15 | |
Rice wine 1 | 1.75 | −40.77 | −31.72 | - | 0.12 | |
Rice wine 2 | 1.75 | −32.56 | −28.47 | 0.36 | 0.39 | |
Water 1 | 1.75 | −32.48 | −27.47 | 0.38 | 0.32 | |
Glass beaker | Ethanol | 2.15 | −24.02 | −26.32 | 0.19 | 0.59 |
Water | 2.15 | −24.49 | −33.86 | 0.34 | 0.12 | |
Kerosene | 2.15 | −26.20 | −27.57 | 0.01 | 0.73 | |
Formamide | 2.15 | −24.69 | −32.85 | 0.37 | 0.15 | |
5% acetic acid | 2.15 | −25.49 | −31.22 | - | 0.27 | |
