Search found 179 matches

by justinleeyang
Wed Nov 27, 2019 3:14 pm
Forum: Loco Positioning System
Topic: ch2 and ch3 Interfere
Replies: 1
Views: 58

ch2 and ch3 Interfere

Interfere with each other about ch2 and ch3, but the two channel don't use the same frequence.
when sniffer set as ch2, tag set as ch3, sniffer still receive tag's data, why?
by justinleeyang
Wed Nov 27, 2019 3:09 pm
Forum: Loco Positioning System
Topic: when exist metal or wall, about tdoa3
Replies: 5
Views: 131

Re: when exist metal or wall, about tdoa3

hi,

Inter-anchors are LOS, but tag and anchors maybe exist occlusion,
by justinleeyang
Sun Nov 24, 2019 4:16 pm
Forum: Loco Positioning System
Topic: when exist metal or wall, about tdoa3
Replies: 5
Views: 131

when exist metal or wall, about tdoa3

hi,

If there is some metal or wall occlusion in the environment, the TDOA3 algorithm be used, and the positioning is very inaccurate?
by justinleeyang
Fri Nov 15, 2019 3:32 pm
Forum: Loco Positioning System
Topic: tdoa3 remoteCount
Replies: 3
Views: 106

Re: tdoa3 remoteCount

hi, arnaud:

sorry, I don't understand it, What problems can this parameter solve?
by justinleeyang
Fri Nov 15, 2019 2:27 am
Forum: Loco Positioning System
Topic: tdoa3 remoteCount
Replies: 3
Views: 106

tdoa3 remoteCount

hi,

https://wiki.bitcraze.io/doc:lps:tdoa3: ... ket_format

about tdoa3, how to understand the Header data remoteCount?
by justinleeyang
Sat Aug 03, 2019 10:25 am
Forum: External positioning systems
Topic: can we design and produce the HTC vive's basestations v1/v2 ?
Replies: 1
Views: 819

can we design and produce the HTC vive's basestations v1/v2 ?

hi

lighthouse position system, we must buy the HTC vive's device, can we design and produce likely devie to replace of the HTC vive's basestations v1/v2 ?
by justinleeyang
Thu Jun 20, 2019 10:49 am
Forum: Developer Discussions
Topic: after enable UART1 for DEBUG PIRNT, system start fail
Replies: 1
Views: 534

after enable UART1 for DEBUG PIRNT, system start fail

hi,

I want to enable UART1 for printf some information, then rewrite config.mk, add :

Code: Select all

CFLAGS += -DENABLE_UART1
CFLAGS += -DDEBUG_PRINT_ON_UART
after compile completely, then make flash, but the system fail.
hope help, thanks!
by justinleeyang
Fri Jun 14, 2019 4:04 am
Forum: Loco Positioning System
Topic: tdoa3 random send, packet will conflict, PTP(Precision Time Protocol) can solve it
Replies: 1
Views: 409

tdoa3 random send, packet will conflict, PTP(Precision Time Protocol) can solve it

hi,

tdoa3 random send, packet will conflict,I think that PTP(Precision Time Protocol) can solve it.
PTP can sync all anchor time, then every anchor run tdma mechanism to avoid collision。
by justinleeyang
Wed Mar 27, 2019 11:06 am
Forum: Loco Positioning System
Topic: enable twr and disable tdma range fail
Replies: 2
Views: 402

Re: enable twr and disable tdma range fail

hi,

only force enable loco deck, no enable other deck.
by justinleeyang
Tue Mar 26, 2019 2:34 pm
Forum: Loco Positioning System
Topic: enable twr and disable tdma range fail
Replies: 2
Views: 402

enable twr and disable tdma range fail

hi,

when enable TWR and disable TDMA, crazyflie2.0 range with 8 anchors, only run a while, then crazyflie2.0 system don't hang, bug don't drive dwm1000 to range with anchor. when enable tdma, always range successufully.