SAILING TO WIN SAILING FOR LIFE Realtime weather

SAILING TO WIN SAILING FOR LIFE Real-time weather station and GPS advancements Peter van Muyden Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE PB 200 Weather. Station® Instrument • True and Apparent Wind Speed and Direction • Barometric pressure • Air Temperature • Wind Chill Temperature • Heater to prevent ice build-up in wind channel • Three axis accelerometer for Pitch & Roll • GPS (WAAS / EGNOS) • 3 axis compass with yaw rate gyro – +/- 1º for pitch and roll angles ≤ 5° – +/- 2º for pitch and roll angles ≤ 30° – +/- 3º for pitch and roll angles ≥ 30°-45° • Both NMEA 0183/RS 422 & NMEA 2000® Outputs Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE Wind Calculations • Four ultrasonic transducers operate in pairs— one transducer injects a pulse into the air. • The pulse bounces off the metal plate at the bottom of the wind channel and is carried by the wind to arrive at the listening transducer a short time later. • When there is no wind, the pulse travels at the speed of sound from the sender to the receiver. • Whenever the wind is blowing in that direction, the pulse will arrive sooner than if the air is still. • Similarly, whenever the wind is blowing in the opposite direction, the pulse will arrive later than if the air is still. Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE Wind Calculations receiving • The four transducers take turns in sending and receiving pulses. • A microprocessor within the Weather. Station then combines the measurements from all four transducers to calculate the resultant wind speed and direction. • Throughout this process, the sensor monitors the air temperature, to compensate for the fact that the speed of sound in air changes with temperature. Real-time weather station and GPS advancements

SAILING TO WIN Real-time weather station and GPS advancements SAILING FOR LIFE

SAILING TO WIN Real-time weather station and GPS advancements SAILING FOR LIFE

SAILING TO WIN Real-time weather station and GPS advancements SAILING FOR LIFE

SAILING TO WIN Real-time weather station and GPS advancements SAILING FOR LIFE

SAILING TO WIN SAILING FOR LIFE www. jpvm. ca/Weather. Station. htm Real-time weather station and GPS advancements or

SAILING TO WIN SAILING FOR LIFE • Remote control – Smart Phones – Tablets Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE Future enhancements • Match racing mark location • Upper and lower wind limits notifications Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE Global Positioning System (GPS) advances Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE Global Positioning System (GPS) • Established in 1973 to overcome the limitations of previous navigation systems • The first GPS satellite was launched in 1978. • A full constellation of 24 satellites was achieved in 1994. • May 2, 2000 "Selective Availability" was discontinued (this improved accuracy from 100 M to 10 M) • Position calculation is based on triangulation of satellites and signal elapsed time Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE GPS accuracy • 1983 +/- 100 Metres Original GPS signal • 2001 +/- 10 Metres Selective availability (SA) removed (Bill Clinton) • 3 -5 Metres: Differential GPS (DGPS) position accuracy • 2007 +/- 3 Metres Wide Area Augmentation System (WAAS) enabled (North America) • Survey grade GPS systems +/- 1 MM post propressed Real-time weather station and GPS advancements

SAILING TO WIN Real-time weather station and GPS advancements SAILING FOR LIFE

SAILING TO WIN SAILING FOR LIFE When to use a GPS and when to use a compass Error Accuracy 50% 1. 4 Mean 1. 5 RMS 1. 8 95% 3. 2 Max. 8. 0 Distance from target Metres 93 NMiles 1 0. 05 185 Compass bearing reading error in Metres 2 3 4 5 2 3 5 6 8 0. 1 3 6 10 13 16 278 0. 15 5 10 15 19 24 370 0. 2 6 13 19 26 32 463 0. 25 8 16 24 32 40 555 0. 3 10 19 29 39 49 648 0. 35 11 23 34 45 57 740 0. 4 13 26 39 52 65 833 0. 45 15 29 44 58 73 926 0. 5 16 32 49 65 81 1018 0. 55 18 36 53 71 89 1111 0. 6 19 39 58 78 97 1203 0. 65 21 42 63 84 105 1296 0. 7 23 45 68 91 113 1388 0. 75 24 48 73 97 121 1481 0. 8 26 52 78 104 130 1573 0. 85 27 55 82 110 138 1666 0. 9 29 58 87 116 146 1758 0. 95 31 61 92 123 154 1851 1 32 65 97 129 162 Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE Advanced GPS’s with built-in radios e g n le ra 4 Mi • Broadcast location • Transmit Waypoints • Poll GPS location Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE Computer based course configuration GPSLoad Biscayne Bay Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE • IPAD & Android tablet users • Avionics digital charts: – North America $16 – Australia / New Zealand $16 Real-time weather station and GPS advancements

SAILING TO WIN SAILING FOR LIFE It doesn’t matter what tools you plan use, just don’t leave home without the following: Real-time weather station and GPS advancements