Introduction In previous posts (Ref.1/3) I looked at using a new GNSS receiver with AIS on various combinations of Win10/RPi4/OpenStreetMap/OpenCPN. In this post I look at GNSS on full receive 921600bps with AIScatcher. Equipment Block Diagram Figure 1 shows the receive block diagram. To receive all 4 satellite constellations you have to have the maximum… Continue reading AIS & GNSS on OpenCPN
Category: Navigation
Navigation: Celestial, Sextant, Equipment
HF Marine Weather 8764KHz_USB
Introduction Further to my previous post (Ref.1), I was hoping to receive a DRM transmission on the 31m band at 1900DST/2300UTC. I used the same equipment: SDR-IQ with HF Loop antenna tuned for 9.5MHz. There were several very powerful signals but no DRM. I did receive a strong USB signal on 8764KHz which turned out… Continue reading HF Marine Weather 8764KHz_USB
RTL-SDR for NOAA15/18/19 Satellite Weather-Summer 2025
Introduction Several years ago, I looked at receiving NOAA15/18/19 satellite weather using various configurations with a Windows 10 laptop and a Raspberry Pi4B (Ref.1/5). I also simulated the NOAA-APT transmission using Scicos (Ref.6). I thought it would interesting to revisit NOAA and try some different ideas I picked up working with Cubesats. Satellite Tracking Figure… Continue reading RTL-SDR for NOAA15/18/19 Satellite Weather-Summer 2025
Celestial Navigation – Summer Fix
Introduction June 20th was Summer minus one day! The forecast was sun mixed with cloudy periods. I headed down to Toronto Harbourfront and the tip of Trillium Park. There is an excellent view of the Lake Ontario water horizon (Az =131deg & Az = 214deg). Figure 1 shows the Stellarium prediction for this date and… Continue reading Celestial Navigation – Summer Fix
GNSS Spring Fix
Introduction In recent posts I have been looking at using my new GNSS receiver on various maps such as OpenStreetMap, OpenCPN and operating systems such as Windows & RaspberryPi (Ref.1/6). Since the icebergs and polar bears have left Toronto Harbour, I thought it would be fun to do a spring fix with GNSS and AIScatcher.… Continue reading GNSS Spring Fix