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Table 1 Six schemes and their corresponding methods

From: A method for mixed additive and multiplicative random error models with inequality constraints in geodesy

Scheme

Method

1

Least squares solution (LS)

2

Weighted least squares iterative solution (WLS)

3

Bias-corrected weighted least squares iterative solution (bcWLS)

4

Algorithm 1

5

Algorithm 2

6

Algorithm 3