An Indoor Unknown Radio Emitter Positioning Approach Using Improved RSSD Location Fingerprinting

Table 4

Steps of the proposed RSSD-PCA-PCC algorithm.

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Proposed RSSD-PCA-PCC algorithm

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(1) Input RSS of RPs from APs, calculate the difference of RSS between APs, and build the RSSD offline fingerprint database with known RP coordinates:

(2) Calculate the eigenvalue and the eigenvector of

(3) Acquire the singular vector by equation (20)

(4) Extract the first columns of to form the projection matrix

(5) Obtain the offline principal component database according to equations (23) and (24)

(6) Compute the online database of a target by differential operation

(7) Obtain the online principal component database according to equations (26) and (27)

(8) Calculate the PCC for offline and online principal component databases using equation (28)

(9) Select RP coordinates with the largest coefficients

(10) Output the estimated coordinate by equation (29)

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