We know that RoadGuide.ph likes Track submissions with 1 second Recording.
I assume the 'logic' behind such request, is to obtain Tracks that display nicely rounded 'curves' accurately showing the 'track' from GPS 'plot'.
If one is travelling @ 60kph, that is 1 km per minute, or 16.66m per second.
Cut that speed down to 30kph and that is 8.33m per second.
15kph means 4.16m per second.
On my Wintec WBT-201 Bluetooth GPS logger I can change the settings to Record GPS Tracks based on the following:-
To satisfy the strict requirement on 1 Second Recording by RoadGuide.ph, I have set my WBT-201 to 'TIME MODE' so if above 2kph and below 120kph, Tracks are recorded every 1 second, regardless of Speed, Distance or Heading.
I pose the question would 'HEADING', or 'MIX MODE', not give 'better' or as good GPS Track recording, with perhaps fewer total points recorded?
Example: Assume you are on a motorcycle, riding on a dirt track, travelling @ 15kph.
With 1 Second Time Interval recording, this will plot GPS Track Point every 4.16m
Travel around a bend of 45 Degrees, and one still only gets a Track Point recorded every 4.16m ie every 1 Second.
If I set my WBT-201 to 'HEADING' Mode and 10 Degrees (ie 5 degrees to left or 5 degrees to right), then it would have recorded 9 x GPS Track points.
You decide if 9 x Track Points around a 45 Degree Bend, regardless of speed, would give better GPS track plot, than every 4.16m if travelling @ 15kph, every 6.33m if travelling @ 30kph etc?
Why plot Tracks every 4.16m if travelling in a straight line @ 15kph?
Would a Track Plot on change of Heading by say 5 Degrees to the Left or 5 degrees to the Right, not be just as good quality, better in fact, with more GPS Track points on bends, and fewer Track points on straight sections
Perhaps RoadGuide.ph might like to review this 1 Second Recoding and allow alternatives perhaps?
Pity Wintec don't offer a Mix Mode of Heading and Distance?
However their current Mix Mode combines Time and Distance Modes. As long as one of both terms is met, one point would be recorded.
This could/would give better results when travelling @ higher speeds than just 1 Second Interval Time Mode?
@ 60kph, Time Mode of 1 second is GPS Track point every 16.66m. One could set Mix Mode to have Distance of 5Km Recording, so 3 times as many plots than just 1 second Recording @ 60kph.
I assume the 'logic' behind such request, is to obtain Tracks that display nicely rounded 'curves' accurately showing the 'track' from GPS 'plot'.
If one is travelling @ 60kph, that is 1 km per minute, or 16.66m per second.
Cut that speed down to 30kph and that is 8.33m per second.
15kph means 4.16m per second.
On my Wintec WBT-201 Bluetooth GPS logger I can change the settings to Record GPS Tracks based on the following:-
- HEADING
Range of Angle Change for Recording
Condition 1: Valid Speed For Record:After positioning, if the speed is between the left side (minimum 0-20kph) and right side (maximum 100-5,000), it is a valid speed for recording. This effectively sets a 'Filter' to prevent Recording when stationary, and spurious GPS track recording hundreds of Km away
Condition 2:After Condition 1 working, the Condition 2 would be reviewed. The device will record one point when the angle of left and right side changed more than 5 degrees (total 10 degrees), and record the other point for the other 10 degrees based on the last point.
The actual 'Heading' variation that can be set, is from 2 degrees (ie 1 degree left or right), to 180 degrees (ie 90 degree left or right turn only) in 2 degree graduation ie Heading Setting in Degrees of 2, 4, 6, 8, 10, 12, 14 ....
- SPEED MODE
Condition 1:Valid Speed For Record:After positioning, if the speed is between the left side (minimum) and right side (maximum), it is a valid speed for recording.
Condition 2:After Condition 1 working, the Condition 2 would be reviewed. The Speed Mode is separated 4 areas, and the record terms would depend on which area it is. For instance, when the speed is 50 km/h, then the point would be recorded every 6 seconds.
The 4 x speed 'Bands' are user configurable, as is the Recording Time Interval for each 'Speed Band'.
Example
Condition 1: Valid Speed for Record: Min 2kph to Max 120kph
Condition 2: 2-15kph = 1 Sec, 15-30kph = 2 sec, 30-60kph = 4 sec, 60-120kph = 8 sec Recording Interval
- TIME MODE
Condition 1:Valid Speed For Record:After positioning, if the speed is between the left side (minimum) and right side (maximum), it is a valid speed for recording.
Condition 2:After Condition 1 working, the Condition 2 would be reviewed. The Log Setting by Time Mode means the record terms is based on the interval of what was set. For example, if could be set so the point would be recorded every 1 seconds, (if above 2kph, and below 120kph).
- DISTANCE MODE
Condition 1:Valid Speed For Record:After positioning, if the speed is between the left side (minimum) and right side (maximum), it is a valid speed for recording.
Condition 2:After Condition 1 working, the Condition 2 would be reviewed. The Log Setting by Distance Mode means the record terms is based on the interval of what was set. Use the last point as a datum point, when the distance of movement is longer than the value sat, one point would be recorded, and the recorded point should be next datum point.
Range is 1m to 1km [COLOR="rgb(105, 105, 105)"](in 1m increments)[/COLOR]
- MIX MODE
Condition 1:Valid Speed For Record:After positioning, if the speed is between the left side (minimum) and right side (maximum), it is a valid speed for recording.
Condition 2:The Mix Mode combines Time and Distance Modes. As long as one of both terms is met, one point would be recorded.
To satisfy the strict requirement on 1 Second Recording by RoadGuide.ph, I have set my WBT-201 to 'TIME MODE' so if above 2kph and below 120kph, Tracks are recorded every 1 second, regardless of Speed, Distance or Heading.
I pose the question would 'HEADING', or 'MIX MODE', not give 'better' or as good GPS Track recording, with perhaps fewer total points recorded?
Example: Assume you are on a motorcycle, riding on a dirt track, travelling @ 15kph.
With 1 Second Time Interval recording, this will plot GPS Track Point every 4.16m
Travel around a bend of 45 Degrees, and one still only gets a Track Point recorded every 4.16m ie every 1 Second.
If I set my WBT-201 to 'HEADING' Mode and 10 Degrees (ie 5 degrees to left or 5 degrees to right), then it would have recorded 9 x GPS Track points.
You decide if 9 x Track Points around a 45 Degree Bend, regardless of speed, would give better GPS track plot, than every 4.16m if travelling @ 15kph, every 6.33m if travelling @ 30kph etc?
Why plot Tracks every 4.16m if travelling in a straight line @ 15kph?
Would a Track Plot on change of Heading by say 5 Degrees to the Left or 5 degrees to the Right, not be just as good quality, better in fact, with more GPS Track points on bends, and fewer Track points on straight sections
Perhaps RoadGuide.ph might like to review this 1 Second Recoding and allow alternatives perhaps?
Pity Wintec don't offer a Mix Mode of Heading and Distance?
However their current Mix Mode combines Time and Distance Modes. As long as one of both terms is met, one point would be recorded.
This could/would give better results when travelling @ higher speeds than just 1 Second Interval Time Mode?
@ 60kph, Time Mode of 1 second is GPS Track point every 16.66m. One could set Mix Mode to have Distance of 5Km Recording, so 3 times as many plots than just 1 second Recording @ 60kph.
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