997 mph alarm

[chuckauten]

When trolling, sometimes the wind will slow my speed down and I hang up. There are many alarms for the 997, so why doesn't it have a setting that has a minimum setting. Say that I am trolling .8 and I don't want my speed to drop below .6, when it does, it gives me an alarm. Isn't this possible?

Thanks.

Chuck

[Humminbird_Greg]

It could be possible Steve and would just be another software upgrade. Not sure that they will want to do it though as slow GPS speeds are still unstable due to the positioning error of the civilain GPS system, but I will pass this along and see that it is put on a "Wish List".

[chuckauten]

Thanks Gregg. It would be a great help to us fishermen. Just another great tool for the HB units.

Chuck

[Cane Pole]

It could be possible Steve and would just be another software upgrade. Not sure that they will want to do it though as slow GPS speeds are still unstable due to the positioning error of the civilain GPS system, but I will pass this along and see that it is put on a "Wish List".

But, these errors are overcome by good programming algorithms.

[slimeyslab]

But, these errors are overcome by good programming algorithms.

I just Googled the word "algorithms". I am still confused. I will just have to take your word on it CP..:D

[BamaMan]

Algorithms=

NOUN:
A step-by-step problem-solving procedure, especially an established, recursive computational procedure for solving a problem in a finite number of steps.

[hotdawg]

yep what bama said

[Humminbird_Greg]

True but only up to a certain point CP. While good programming can be used to root-sum-squared out most of the inherent inaccuracies in the GPS system (like: satellite clock errors, satellite orbit errors, atmospheric delays, multipath errors and receiver noise) it cannot help with RF noise issues that can cause inaccurate position measurements. Plus the government will not allow us to use the more accurate L2 signal (Precise code or “P-code”), so we are stuck with what we have. Now as the folks that run the GPS system upload more intelligent programming to the satellites, launch more standard satellites and geostationary satellites like the three WAAS satellites in orbit now (only two are fully operational), and as GPS Receivers adapt to the increased numbers of satellites and even gain the ability to use satellite systems from other countries: slow speed reading accuracy will increase as will the overall accuracy of any GPS Receiver that can take advantage of these.

Now, we could use some of those fancy algorithms and make a best guess as to your speed and course, but do you really want to go by a guess for this?

[Cane Pole]

True but only up to a certain point CP. While good programming can be used to root-sum-squared out most of the inherent inaccuracies in the GPS system (like: satellite clock errors, satellite orbit errors, atmospheric delays, multipath errors and receiver noise) it cannot help with RF noise issues that can cause inaccurate position measurements. Plus the government will not allow us to use the more accurate L2 signal (Precise code or “P-code”), so we are stuck with what we have. Now as the folks that run the GPS system upload more intelligent programming to the satellites, launch more standard satellites and geostationary satellites like the three WAAS satellites in orbit now (only two are fully operational), and as GPS Receivers adapt to the increased numbers of satellites and even gain the ability to use satellite systems from other countries: slow speed reading accuracy will increase as will the overall accuracy of any GPS Receiver that can take advantage of these.

Now, we could use some of those fancy algorithms and make a best guess as to your speed and course, but do you really want to go by a guess for this?

I know these things as stated above. I taught this is school. I got my GPS training with Trimble and they provided my course work outlines. Now, at slow speeds, I doubt I would run over anything below .6 mph. A calculated estimate speed/direction would be better than a dount. I can't "aim" a donut.My Garmin does pretty good at these lower speeds.


reference: Trimble - GPS Tutorial


respectfully,

Tom

[Humminbird_Greg]

Understand CP. Maybe we will come out with an additional accessory that works like an electronic compass or something so that we can always show a directional arrow.