Table 2 State space parameter configurations.

From: A hybrid APF-DQN framework with transformer-based current prediction for USV path planning in dynamic ocean environments

Parameter

Description

Dimension/Value

n

Local observation window size

11

T

Temporal history length

10

W, H

Global map dimensions

\(40 \times 40\)

\(\textbf{p}_c, \textbf{p}_g\)

Normalized positions

\([-1,1]^2\)

\(\dot{\textbf{p}}_c\)

USV velocity

\(\mathbb {R}^2\)

\(\textbf{V}_l\)

Local obstacle map

\(\{0,1\}^{11 \times 11}\)

\(\textbf{M}_g\)

Global obstacle map

\(\{0,1\}^{40 \times 40}\)

\(\textbf{V}_f\)

Predicted current field

\(\mathbb {R}^{2 \times 11 \times 11}\)