Tue 13 Mar, 2018 5:35 pm
Tue 13 Mar, 2018 9:36 pm
Tue 13 Mar, 2018 11:05 pm
Wed 14 Mar, 2018 4:29 am
crollsurf wrote:Sorry but this technology is very dangerous. Useful for targeting someone in a crowd with a drone but offers little benefit to bushwalkers.
Wed 14 Mar, 2018 6:11 am
Wed 14 Mar, 2018 7:28 am
crollsurf wrote:Sorry but this technology is very dangerous. Useful for targeting someone in a crowd with a drone but offers little benefit to bushwalkers.
Wed 14 Mar, 2018 10:30 am
Wed 14 Mar, 2018 11:00 am
Wed 14 Mar, 2018 11:16 am
neilmny wrote:Does the GPS actually talk (identify itself) to the satelites?
neilmny wrote:I'd like that accuracy in a PLB.
Wed 14 Mar, 2018 2:20 pm
Warin wrote:............Why? If the rescuers are directed to within 20 meters of you that should be good enough.............
Wed 14 Mar, 2018 4:04 pm
Orion wrote:Do you know how much the L5 will improve elevation accuracy?
wander wrote:now I know that is because there is less reflected signals.
Warin wrote:Why? If the rescuers are directed to within 20 meters of you that should be good enough.
Warin wrote:This new stuff ... only a few of these satellites are up - so coverage will be poor.
Warin wrote:And a GPS that receives this extra band may consume more battery power, and be more expensive.
Fri 16 Mar, 2018 5:00 pm
keithy wrote:Warin wrote:And a GPS that receives this extra band may consume more battery power, and be more expensive.
Broadcom released their spec of their dual frequency chipset in September 2017 and it shows it consumes less than half the power of the previous generation Broadcom GNSS chipset, as mentioned above "current consumption during GNSS tracking can be lower than 5 mA".
When asked about the price to OEM (original equipment manufacturers), Broadcom stated the price of the chipset would be the similar to the existing L1 GNSS chipset.
Of course, I wouldn't put it past a GPS manufacturer jack up the price of new models incorporating these dual frequency receivers with marketing spin.
Sat 17 Mar, 2018 1:58 am
keithy wrote:Orion wrote:Do you know how much the L5 will improve elevation accuracy?
I would say that the L5 signal would improve vertical accuracy where that is impacted by multi-path errors (the reflected/bounced satellite signals). But the geometry issue still remains...
...The dual L1 & L5 signal can also improve the signal by being able to estimate the ionospheric signal delays directly (without the augmentation by WAAS or SBAS). The stronger L5 signal should also reduce noise and multi-path errors to give a more accurate vertical accuracy.
Tue 20 Mar, 2018 10:27 pm
Orion wrote: But my question was "how much" it will improve the vertical accuracy. Will it scale similarly to the improvement in horizontal accuracy?
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