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Table 1 Symbols used in this paper

From: Indoor acoustic localization: a survey

SymbolDescription
AAmplitude
BBandwidth
cThe sound speed
dDistance
\(f_{max}\)The maximum frequency
\(f_{min}\)The minimum frequency
\(f_{Rx}\)The frequency of the received signal
\(f_{Tx}\)The frequency of the transmitted signal
\(F_s\)Sampling rate
kThe slope of a chip signal
RxReceiver
S(t)Received signal
tTimestamp (usually with a subscript)
\(t_d\)Propagation delay
TTime interval
TxTransmitter
vThe speed of the target
\(\alpha\)Attenuation factor
(xyz)3D location coordinate