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Vessel Proximity Detection

Overview

This script analyzes vessel proximity events using data from a CSV file. It calculates when vessels come within a specified distance threshold and visualizes the results using Matplotlib and Plotly.

Dependencies

  • pandas: For data manipulation.
  • geopy: For calculating geographical distances.
  • matplotlib: For plotting with Matplotlib.
  • plotly: For interactive plotting.

Input Data

The input is a CSV file with the following columns:

  • mmsi: Maritime Mobile Service Identity (9-digit vessel ID)
  • timestamp: Timestamp of the vessel position
  • lat: Latitude of the vessel
  • lon: Longitude of the vessel

Background:

Marine vessels, including container ships, cargo ships, passenger ships, and others, are assigned a unique 9-digit number called the Maritime Mobile Service Identity (MMSI). This number is used to uniquely identify each vessel.

Haversine Distance Formula:

The Haversine formula calculates the distance between two points on the surface of a sphere using their latitudinal and longitudinal coordinates. It accounts for the spherical shape of the Earth to provide an accurate distance measurement.