TREK1000 User Manual
© Decawave 2016
This document is confidential and contains information which is proprietary to
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8 A
NALYSIS
This section contains some notes about analysis and interpretation of results.
8.1 Log Files
During a TREK session each transaction between Anchor and Tag is recorded into a log file
which can be post-processed and analysed after the testing session.
The log file can be found in the Logs folder and the name is of the format:
yyyymmdd_hhmmssRTLS_log.txt
8.1.1 Range Report Format
There are three ranging report messages sent over the USB port:
1.
mr 0f 000005a4 000004c8 00000436 000003f9 0958 c0 40424042 a0:0
2.
ma 07 00000000 0000085c 00000659 000006b7 095b 26 00024bed a0:0
3.
mc 0f 00000663 000005a3 00000512 000004cb 095f c1 00024c24 a0:0
The “mr” message consists of tag to anchor raw ranges, “mc” tag to anchor range bias corrected
ranges – used for tag location and “ma” anchor to anchor range bias corrected ranges – used for
anchor auto-positioning.
MID MASK RANGE0 RANGE1 RANGE2 RANGE3 NRANGES RSEQ DEBUG aT:A
MID
this is the message ID, as described above: mr, mc and ma
MASK
this states which RANGEs are valid, if MASK=7 then only RANGE0, RANGE1 and RANGE2
are valid (in hex, 8-bit number)
RANGE0
this is tag to anchor ID 0 range if MID = mc/mr (in mm, 32-bit hex number)
RANGE1
this is tag to anchor ID 1 range if MID = mc/mr or anchor 0 to anchor 1 range if MID =
ma (in mm, 32-bit hex number)
RANGE2
this is tag to anchor ID 2 range if MID = mc/mr or anchor 0 to anchor 2 range if MID =
ma (in mm, 32-bit hex number)
RANGE3
this is tag to anchor ID 3 range if MID = mc/mr or anchor 1 to anchor 2 range if MID =
ma (in mm, 32-bit hex number)
NRANGES
this is a number of ranges completed by reporting unit raw range (16-bit hex number)
RSEQ
this is the range sequence number (8-bit hex number)
DEBUG
this is the TX/RX antenna delays (if MID = ma) – two 16-bit numbers or time of last
range reported – if MID = mc/mr (32 bit hex number)
aT:A
the T is the tag ID and A id the anchor ID
The figure below shows how to interpret the messages in the log files.
