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TABLE OF VARIABLES
| a(z) | arbitrary function |
| A 0 | fiber elongation corresponding to 1 rad of phase shift |
| A(z, t) | output of DAS |
| A1(z) | output of DAS with first order algorithm |
| A2(z) | output of DAS with second order algorithm |
| b(z) | arbitrary function |
| c | optical speed of light in fiber |
| C | speed of sound |
| D | DAS dynamic range |
| e(t′) | optical field of coherent input pulse |
| E(t′) | optical field on photodetector |
| ℑ(K, F) | Fourier transforms of seismic signal |
| ℑ | Fourier transform symbol |
| F | frequency of sound |
| F MAX | maximum frequency of sound |
| F S | pulse repetition rate or sampling frequency |
| G(z) | geophone antenna response |
| hυ | energy quant |
| Im Z | imaginary part of interference output |
| Ij (z, t) | intensity trace for different interferometric output |
| I(z, t) | photodetector intensity trace |
| j | integer number |
|
|