syntax = "proto3"; package aman; message Coordinate { double latitude = 1; // WGS84 latitude in degrees double longitude = 2; // WGS84 longitude in degrees } message Dynamics { int32 groundSpeed = 1; // given in knots int32 altitude = 2; // given in feet int32 verticalSpeed = 3; // given in feet/min } message Time { int32 hour = 1; // hours in 24-format int32 minute = 2; // minutes }