Radar Simulator — Marine PPI Demo (v0.1.0)

Sit at a radar watch station on a nearly stationary vessel. A circular Plan Position Indicator (PPI) sweeps clockwise about once per second. Echoes update sector by sector as the beam passes — not a full-frame refresh. Shoreline, seabed, moving vessels, and fish schools all appear on the same phosphor disc.

This is a technical demonstration, not a game with missions or scoring. The product is the radar picture itself.

Features

- Live PPI with phosphor decay and sector-by-sector updates

- Low-poly coastal world driving real echo returns

- Ship motion from sea state — fixed shorelines gently rotate and drift on the display

- Dynamic targets: vessel traffic + fish school echoes

- Toggle operator overlay: scan line, range rings, parameters (or watch raw radar only)

- Scene design view for editing terrain, vessel paths, and fish schools

- Chinese / English UI — press F2 to switch

Controls

|    Key   |                          Action                          |

|---------|-------------------------------------|

|      O      |       Toggle operator overlay      |

|       L       |                Scan line on/off               |

|        I       |            Parameters on/off             |

|       G      |             Range rings on/off            |

|  Space  |                 Pause / resume               |

|     [ / ]     |    Slow down / speed up time   |

|       P       |               PPI display mode             |

|       R       |              Restart scenario               |

|     Tab    |  Switch to scene design view |

|      F2      |     Language (中文 / English)    |

Requirements

- OS: Windows 10/11 (64-bit)

- GPU: DirectX 11 compatible

- No install needed — extract and run the `.exe` (keep the `.pck` beside it)

Status

Early demo (0.1.0-demo). Active development. Feedback welcome.

Credits

Built with Godot 4.7.  

Marine radar simulation / training research demo.