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Table 2 WLS estimators based on TOAs for locating an asynchronous target

From: Reference-free time-based localization for an asynchronous target

 

REFF-USR-WLS

REFB-USR-WLS

REFF-USRD-WLS

REFB-USRD-WLS(1)

REFB-USRD-WLS(2)

Relations

 

The REFB-USR-WLS and the REFB-USRD-WLS(2) estimate are identical They are all identical with optimal weighting matrices Q * = Q i , j * = Q i *

No. of references

0

2

0

1

2

Reference dependency

No

Yes, with Qi,j

No

Yes, with Q i

Yes, with Qi,j

  

No, with Q i , j *

 

No, with Q i *

No, with Q i , j *

Literature

Proposed

 

Proposed

  

Min. no. of anchors, x of length l

  

l+2

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