Often in these circumstances, depth was lost as some point in the trip and the user did not notice and continued driving their path recording null data. We’ve frequently get calls from users wondering why parts of mapped water bodies were missing from their BioBase map after upload. Users can verify and edit their output in the main trip viewer in BioBase EcoSound, loading the data and using Trip Replay.įigure 3. Extreme changes and periodic losses of depth are automatically smoothed or removed from BioBase. Example of periodic losses of depth in the vegetation canopy. As the growing season progresses, horizontal and “matting” growth proliferates and high levels of plant biomass can obscure bottom readings (see Fig. Smooth and accurate depth tracking through plant canopies occurs during times of the year when plants are elongating vertically. Depth (white line) should track pretty well through moderately dense plant canopies. Example of a clear 200 kHz (“Sonar ” left) and 455 kHz Downscan (“Structure ” right) signal. If you’re a first timer not familiar with sonar of “fish finders” you should spend some time familiarizing yourself visually interpreting a sonar display prior to mapping “for real.”įigure 1. And, add a depth line to your Sonar Screen in the Sonar View menu. If you can’t see a digital depth reading on your screen, add it ( here’s how). Like using most other sophisticated instrumentation, users need to monitor that the instruments are performing as expected and sometimes make adjustments if they aren’t.Īs such, we often stress the importance of monitoring your sonar and GPS display while logging sonar making sure you get a clear view of bottom with a continuous digital depth reading (Figure 1). We promote BioBase as an automated “easy-button” solution for creating aquatic maps, but unfortunately, mobile acoustic data collection is not something you can push a button and forget about and expect perfect results.
0 kommentar(er)
