Table 1 Raw data and variance-compensated adaptive Kalman data for monitoring site 1.

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

514.7998

877.4571

514.7998

877.4571

0.00

0.00

2

514.7998

877.4559

514.7998

877.4560

0.05

0.07

3

514.7984

877.4556

514.7986

877.4557

0.22

0.18

4

514.7979

877.4552

514.7975

877.4555

−0.34

0.26

5

514.7950

877.4530

514.7953

877.4535

0.30

0.49

6

514.7963

877.4521

514.7967

877.4524

0.40

0.29

7

514.7952

877.4500

514.7948

877.4496

−0.43

−0.34

8

514.7939

877.4502

514.7935

877.4504

−0.44

0.24

9

514.7928

877.4491

514.7932

877.4496

0.38

0.46

10

514.7909

877.4460

514.7904

877.4459

−0.46

−0.11