"LAT Burst Update Alert Telemetry" (APP/LPA)

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Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Context:

Description:

The LAT shall provide this Alert Telemetry to the SC (for transmission to the ground) as updates to its burst processing are available. No more than ten of these Updates shall be generated per burst ID.

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LAT Burst Update Alert Telemetry (ALRTUPDATE) Telemetry Packet Format
0x	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
000	Version=0			T=0	SH	APID=0x342
002	SF		Sequence Count
004	Packet Length=81
006	Timestamp
00E	RECINFO info
010	TSEC dcl_sec
014	TUSEC dcl_usec
018	BCLASS bclass
01C	BSIG temporal
01E	BSIG spatial
020	BRA ra
022	BDEC dec
024	BERR err
026	GCNT loc_cnt
028	TSEC ep_sec
02C	TUSEC ep_usec
030	TSEC lp_sec
034	TUSEC lp_usec
038	GCNT gam_cnt[0-3]
040	BQUAT quaternion[0-3]
048	TRGPRM trg_prm[0-7]

Fields:

BCLASS (index)

Attribute(s):  

Brief:  "Burst Classification"

Instance(s):  bclass

GRB Burst classification.

BDEC (index)

Attribute(s):  

Brief:  "Burst Location DEC"

Instance(s):  dec

BERR (index)

Attribute(s):  

Brief:  "Burst Error in Arcmin"

Instance(s):  err

BQUAT (index)

Attribute(s):  

Brief:  "Burst Quaternion"

Instance(s):  quaternion

BRA (index)

Attribute(s):  

Brief:  "Burst Location RA"

Instance(s):  ra

BSIG (index)

Attribute(s):  

Brief:  "Burst Significance"

Instance(s):  spatial, temporal

GCNT (index)

Attribute(s):  

Brief:  "Gamma Counts"

Instance(s):  gam_cnt, loc_cnt

RECINFO (index)

Attribute(s):  

Brief:  "Record Info"

Instance(s):  info

TRGPRM (index)

Attribute(s):  

Brief:  "Trigger Parameter"

Instance(s):  trg_prm

TSEC (index)

Attribute(s):  

Brief:  "Time Seconds"

Instance(s):  dcl_sec, ep_sec, lp_sec

TUSEC (index)

Attribute(s):  

Brief:  "Time Microseconds"

Instance(s):  dcl_usec, ep_usec, lp_usec