1 Introduction
2 Related work
2.1 Range-based methods
2.2 Range-free methods
3 Preliminaries
Notation | Description |
---|---|
\(\hat {L}\)
| The estimated location |
L
i
| The location of fingerprint i |
w
i
| The weight of fingerprint i |
P
0
| The RSS value received at distance d0 |
P
d
| The RSS sensed in a distance of d |
γ
| The path loss exponent |
ρ
i
| The discrimination factor of AP i |
\(\rho ^{N}_{i}\)
| Normalized form of ρ
i
|
h(f,f′) | The modified dissimilarity between f and f′ |
σ
i
| The RSS strength value difference of AP i |
ψ
| The health of GPS |
snr
i
| Signal-to-noise ratio of satellite i |
η
| The ultimate synthesized dissimilarity metric |