Table 2 Raw data and variance-compensated adaptive Kalman data for monitoring site 2.

From: Application of optimized Kalman filtering in target tracking based on improved Gray Wolf algorithm

Phase

Measured value (m)

X coordinate Y coordinate

Variance Compensation Adaptive Kalman (m)

X coordinate Y coordinate

X offset/mm

Y offset/mm

1

512.0429

877.0389

512.0429

877.0389

0.00

0.00

2

512.0430

877.0376

512.0430

877.0377

0.06

0.07

3

512.0411

877.0377

512.0414

877.0374

0.27

−0.27

4

512.0392

877.0357

512.0391

877.0360

−0.13

0.24

5

512.0377

877.0350

512.0375

877.0351

−0.22

0.06

6

512.0406

877.0342

512.0402

877.0347

−0.42

0.46

7

512.0368

877.0333

512.0369

877.0330

0.08

−0.26

8

512.0358

877.0324

512.0358

877.0324

−0.06

0.06

9

512.0337

877.0325

512.0339

877.0322

0.24

−0.32

10

512.0330

877.0303

512.0334

877.0307

0.49

0.40