Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L...

52
Session 7 System Calibration Ulrich Schreiber, Ivan Prochazka

Transcript of Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L...

Page 1: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Session 7

System Calibration

Ulrich Schreiber, Ivan Prochazka

Page 2: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Lase

r Sys

tem

Cal

ibra

tion

Ulri

ch S

chre

iber

Ivan

Pro

chaz

ka

Page 3: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Prea

mbl

e

RA

NG

E E

rro

rs:

AJ

_2

00

21

01

60

80

5M

ax

.El

72

.8 d

eg

, T

ab

.In

t 2

0 s

ec

s,

La

gr

ord

er

6(F

irs

t 4

00

se

co

nd

s o

f p

as

s))

-1.0

-0.5

0.0

0.5

1.0 2

91

60

29

20

02

92

40

29

28

02

93

20

29

36

02

94

00

29

44

02

94

80

29

52

02

95

60

Tim

e (

UT

C S

ec

on

ds

)

Range Error (ns)

Sp

line

La

gr

War

m re

gard

s fro

m J

ohn

Luck

: The

inte

rpol

atio

n er

rors

of t

he IR

Vs

are

prop

erga

ting

to th

e N

P if

thin

gs a

re n

ot h

andl

ed c

aref

ully

Page 4: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

I. G

eom

etric

al E

rror S

ourc

es

Page 5: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Geo

met

rical

Erro

r Sou

rces

•Ta

rget

stru

ctur

e (m

echa

nica

l)

•Be

am p

ath

thro

ugh

tele

scop

e (s

tabi

lity)

Page 6: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Exam

ple

Page 7: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Conc

lusio

n

•Th

ese

erro

rs a

re ty

pica

lly sm

all

Page 8: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

II. E

lect

roni

cal E

rror S

ourc

es

Page 9: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Calib

ratio

n Ba

sics

r

geom

etric

al e

rrors

(sm

all)

Page 10: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

... a

s soo

n as

we

try to

mea

sure

thin

gs

they

bec

ome

mor

e co

mpl

icat

ed

Page 11: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

H-M

aser

Cor

rect

ion

in V

LBI

Page 12: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Inte

rpre

tatio

n

The

intri

nsic

hig

h cl

ock

accu

racy

is n

ot

acce

ssib

le b

y th

e el

ectro

nic

hard

war

e

Page 13: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Iden

tific

atio

n of

Issu

es

•El

ectro

nic

circ

uits

caus

e tim

e va

ryin

gin

serti

on d

elay

s•

Del

ays s

how

tem

pera

ture

dep

ende

nce

•D

elay

s sho

w b

andw

idth

dep

ende

nce

•D

elay

s sho

w im

peda

nce

mat

chin

g iss

ues

•D

elay

s sho

w si

gnal

leve

l rel

ated

issu

es(s

uppl

y vo

ltage

stab

ility

, gro

und

refe

renc

e)

Page 14: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Pow

er L

evel

Sta

bilit

y

Page 15: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Trig

ger T

hres

hold

Sta

bilit

y

0.10

0.11

0.12

0.13

0.14

285

290

295

Trigger Level Voltage [V]

Tim

e [d

ays]

Tenn

elec

Trig

ger L

evel

beh

avio

r

Page 16: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Impe

danc

e m

atch

ing

Page 17: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

III. O

ptic

al E

rror S

ourc

es

Page 18: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Opt

ical

Erro

r Sou

rces

•W

avef

ront

dist

ortio

ns

•H

ighe

r ord

er sp

atia

l las

er m

odes

•La

ser b

ackr

efle

ctio

ns a

nd sa

tura

tion

effe

cts

(sha

red

aper

ture

)

Page 19: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

IV. S

olut

ions

Page 20: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Syste

m D

esig

n Sy

mm

etry

•us

e th

e sa

me

elec

troni

c co

mpo

nent

s as

muc

h as

pos

sible

or a

t lea

st tw

in c

hips

•ca

refu

lly a

djus

t sig

nal l

evel

s and

pul

sesh

apes

for b

oth

calib

ratio

n an

d ra

ngin

g

•av

oid

timew

alk

Page 21: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Redu

ndan

cy!!!

•Co

-Loc

atio

ns w

ere

used

in th

e pa

st (c

ostly

)•

Trav

elin

g ba

rom

eter

cam

paig

ns a

djus

t the

met

eoro

logy

issu

es•

Seve

ral (

elec

troni

c) su

bsys

tem

s are

ope

rate

d in

para

llel

•Co

unte

r Clu

ster (

Gra

z) w

as th

e fir

st ste

p•

Porta

ble

Calib

ratio

n St

anda

rd (f

lexi

ble,

che

ap)

Page 22: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Acc

ess t

o a

num

ber o

f erro

rs

•ep

och

and

time

inte

rval

tim

ing

•tim

e an

d fre

quen

cy re

fere

nce

•da

ta a

quisi

tion,

filte

ring

and

proc

essin

g•

calib

ratio

n sc

hem

e an

d gr

ound

surv

ey•

oper

atio

nal p

roce

dure

s (ha

bits)

•rf-

inte

rfere

nce,

gro

und

refe

renc

e

Page 23: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Basic

Con

cept

Page 24: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Inte

r-Sys

tem

Red

unda

ncy

elec

tr.

r(t)

mea

sure

men

tun

it

engi

neer

ing

data

filesig

nal p

roce

ssin

g er

rors

(var

iabl

e, la

rger

)

Page 25: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Sat

ellit

e La

ser

Ran

ging

Mac

hine

Bia

s R

educ

tion

Pro

cedu

res

Tow

ard

Mill

imet

er A

ccur

acy

Vad

emec

um

Kar

el H

amal

, Iva

n P

roch

azka

Cze

ch T

echn

ical

Uni

vers

ity, P

ragu

e, C

zech

Rep

ublic

Page 26: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Goa

ls•

SLR

sys

tem

s bi

as r

educ

tion

•in

ter-

com

paris

on a

nd s

tand

ardi

zatio

n of

SLR

sys

tem

s

•P

orta

ble

Cal

ibra

tion

Sta

ndar

d fo

r S

atel

lite

Lase

rR

angi

ng m

achi

ne d

iagn

ostic

sid

entif

icat

ion

of e

rror

sou

rces

due

to :

- ep

och

and

time

inte

rval

tim

ing

- ep

och

and

freq

uenc

y re

fere

nce

- da

ta a

cqui

sitio

n, fi

lterin

g an

d pr

oces

sing

- ca

libra

tion

sche

me

and

grou

nd s

urve

y-

oper

atio

nal p

roce

dure

s-

radi

o fr

eque

ncy

inte

rfer

ence

- ot

her

sour

ces

Page 27: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Por

tabl

e C

alib

ratio

n S

tand

ard

Phi

loso

phy

•hi

gh d

egre

e of

red

un

dan

cy

•ba

sed

on to

p q

ual

ity

and

cer

tifi

edha

rdw

are

•in

dep

end

ent

on S

LR u

nder

test

- si

gnal

pro

cess

ing

and

cabl

ing

- gr

ound

ing,

pow

er li

ne,

RF

shi

eldi

ng-

timin

g (t

ime

inte

rval

, epo

ch)

- ca

libra

tion

targ

ets

and

grou

nd s

urve

y-

data

acq

uisi

tion

and

data

pro

cess

ing

- st

aff

•op

erat

ed i

n p

aral

lel t

o e

xist

ing

SL

R

•ea

sy t

o r

e-lo

cate

(pe

rson

al lu

ggag

e)

Page 28: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

PO

RT

AB

LE C

ALI

BR

AT

ION

ST

AN

DA

RD

P -

PE

T

1 pp

s10

MH

z

PC

+ s

oft

SLR

PC

SLR

MA

CH

INE

Lase

rS

tart

Sto

pT

imer

Clo

ck

GP

S

RS

232

min

icol

l

sate

llite

LAN

ST

AR

T

ST

OP

ME

TE

O

Page 29: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Page 30: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Pic

o E

vent

Tim

erP

orta

ble

Cal

ibra

tion

Sta

ndar

d

Page 31: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Gro

und

Tar

get C

alib

ratio

n•

“min

i-co

ll” c

once

pt,

•us

e m

inim

um 3

gro

und

targ

ets,

•di

stan

ces

< 1

00 m

eter

s,(d

iffic

ultie

s to

mod

el h

oriz

onta

l atm

. cor

rect

ion

> 1

00m

)

•di

ffere

nt a

zim

uths

,

•“z

ero

para

lax”

hol

low

ret

ro r

efle

ctor

s (2

D)

•ta

rget

s re

fere

nce

poin

ts s

urve

yed

dow

n to

1 m

m a

ccur

acy

3 D

•th

e sy

stem

inte

rnal

del

ays

eval

uate

d by

cal

ibra

tion

rang

ing

todi

ffere

nt ta

rget

s in

dica

te th

e ca

libra

tion

accu

racy

and

the

calib

ratio

n va

lue

conf

iden

ce.

•th

e su

rvey

and

cal

ibra

tion

proc

edur

e ha

s to

be

tune

d un

til th

ein

tern

al d

elay

con

sist

ency

is o

n a

mm

leve

l

Page 32: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

The

3 c

al. t

arge

ts /h

ollo

w 2

D r

etro

s/ h

ave

been

re-

surv

eyed

and

th

e ca

libra

tion

proc

edur

e tu

ned

until

the

the

syst

em in

tern

al d

elay

valu

e co

nsis

tenc

y of

2 m

m h

as b

een

achi

eved

.T

he 2

mm

leve

l was

a li

mit

for

the

syst

em a

t tha

t tim

e.

Page 33: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

SLR

Tim

e B

ias

iden

tific

atio

n

•T

he P

CS

is o

pera

ted

in p

aral

lel t

o th

e S

LR s

yste

mun

der

test

,

•th

e co

rres

pond

ing

pairs

of S

LR r

esul

ts a

re id

entif

ied,

•th

e tim

e bi

as is

eva

luat

ed a

s a

diffe

renc

e of

corr

espo

ndin

g ep

ochs

on

a sh

ot b

y sh

ot b

asis

,

•th

e tim

e bi

as p

er p

ass

is e

valu

ated

as

a an

arit

hmet

icav

erag

e,

Page 34: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Tim

e B

ias

, PC

S in

Cha

ngch

un

The

SLR

use

d a

wro

ng fr

eque

ncy

sour

ce (

the

slop

e),

the

SLR

tim

e ba

se h

as b

een

sync

hron

ized

onl

y on

ce p

er d

ayth

e tim

e bi

as is

targ

et in

depe

nden

t

Page 35: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

SLR

Ran

ge B

ias

Iden

tific

atio

n

•T

he P

CS

is o

pera

ted

in p

aral

lel t

o th

e S

LR s

yste

m u

nder

test

,

•th

e co

rres

pond

ing

pairs

of S

LR r

esul

ts a

re id

entif

ied,

•th

e ra

nge

bias

is e

valu

ated

as

a di

ffere

nce

of c

orre

spon

ding

ran

gere

adin

gs o

n a

shot

by

shot

bas

is,

•on

a s

hot b

y sh

ot b

asis

, the

ran

ge b

ias

vers

us r

ange

iden

tifie

s th

etim

e of

flig

ht li

near

ity

•th

e ra

nge

bias

per

pas

s is

eva

luat

ed a

s a

an a

rithm

etic

ave

rage

, it

char

acte

rizes

the

rang

e bi

as o

f the

SLR

sys

tem

ver

s. P

CS

Page 36: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

K. H

amal

et a

l, E

GS

-AG

U-E

UG

Joi

nt A

ssem

bly,

Nic

e, A

pril

2003

Sat

ellit

e La

ser R

angi

ng P

orta

ble

Cal

ibra

tion

Sta

ndar

d M

issi

ons

1997

-200

2

RA

NG

ING

CO

UN

TER

S C

OM

PA

RIS

ON

TO

P-P

ET

P. G

ibs,

Her

stm

once

ux, 2

002

Page 37: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

SR

620

/ P-P

ET

Co

un

ter

Lin

eari

tyP

ots

dam

, 200

1, L

AG

EO

S p

ass

50 p

s / d

iv

off

set

- 45

ps

no

n r

epro

du

cib

le o

scill

atio

ns

off

set

- 51

psC

ou

nte

r s/

n 1

014

(in

ro

uti

ne

use

)

the

sam

e m

easu

rem

ent,

3 h

ou

rs la

ter

L. G

runw

ald

, R.N

eube

rt, H

.Fis

cher

, H

.Pin

o, P

otsd

am, 2

001

Page 38: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

SR

620

/ P-P

ET

Co

un

ter

Lin

eari

tyP

ots

dam

, 200

1, S

ho

rt t

imes

10 p

s / d

ivC

ou

nte

r s/

n 1

014

(in

ro

uti

ne

use

)

P-P

ET

v

s. S

R6

20

/ S

/N

1

01

4 (5

.9

.2

00

1)

50

0 p

uls

es

p

er d

ata

p

oin

t

0.52

0.53

0.54

0.55

0.56

0.57

0.58

0.59

20

30

40

50

60

70

80

90

100

Tim

e In

te

rv

al (S

R6

20

) [n

s]

SR620 - P-PET - 3 [ns]

P-P

ET

a

ga

in

st S

R6

20

/ S

N 1

01

4 (3

1.8

.2

00

1)

50

0 p

uls

es

p

er d

ata p

oin

t

0.42

0.43

0.44

0.45

0.46

0.47

0.48

0.49

20

30

40

50

60

70

80

90

100

Tim

e In

te

rv

al (S

R6

20

) [n

s]

SR620 - P-PET - 3 ns [ns]

0 -

100

nse

c

40 p

s

the

sam

e, la

ter

on

L. G

runw

ald

, R.N

eube

rt, H

.Fis

cher

, H

.Pin

o, P

otsd

am, 2

001

Page 39: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Ran

ge a

nd T

ime

Bia

ses,

Sha

ngha

i 200

1

Sate

llit

eP

-PE

T r

ms(m

m)S

LR

rm

s(m

m)T

ime b

ias(u

s)R

ng

. b

ias(n

s)S

tarl

ett

e7.5

12.7

0.1

0.0

2B

eaco

n-C

9.3

13.8

0.1

0.0

0A

jisai1

0.9

15.9

0.1

0.0

0L

ag

eo

s 2

10.5

17.3

0.1

-0.0

1S

tarl

ett

e9.0

15.1

0.1

0.0

3L

ag

eo

s 1

8.5

14.2

0.1

0.0

1B

eaco

n C

19.2

19.7

0.1

0.0

2T

op

ex22.4

350.1

0.0

0T

op

ex4.9

10.8

0.1

0.0

0L

ag

eo

s 1

7.0

13.5

0.1

0.0

0S

tella6.1

12.4

0.1

0.0

0B

eaco

n C

10.0

16.1

0.1

0.0

0S

tarl

ett

e8.4

12.9

0.1

0.0

1W

estp

ac--

16.6

0.1

0.0

3L

ag

eo

s 2

8.5

16.1

0.1

0.0

0S

tella4.8

11.5

0.1

0.0

0E

RS

-24.0

10.5

0.1

0.0

1m

ean

0.1

0.0

1

Page 40: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Tim

e an

d T

empe

ratu

re S

tabi

lity,

SLR

Gra

z

•T

he P

CS

was

ope

rate

d in

par

alle

l to

the

SLR

sys

tem

und

er te

st,

•th

e te

mpo

ral a

nd te

mpe

ratu

re d

rifts

of t

he P

CS

are

bel

ow 1

ps,

•th

e gr

ound

tar

get

calib

ratio

n w

as r

epea

tedl

y co

mpl

eted

with

inon

e ho

ur,

•th

e th

ick

curv

e co

rres

pond

s to

the

stab

ility

(+

/- 1

mm

) of

the

SLR

rang

ing

chai

n ex

clud

ing

the

time

of fl

ight

inst

rum

ent (

coun

ter

clus

ter)

,

•th

e th

in c

urve

cor

resp

onds

to th

e en

tire

SLR

sys

tem

tem

pora

lst

abili

ty (

+/-

2 m

m a

t tha

t con

figur

atio

n)

Page 41: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

P-P

ET

in G

raz,

Cal

ibra

tion

Sta

bilit

y

Page 42: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

SLR

Pre

cisi

on In

crea

se

•op

erat

ed i

n p

aral

lel t

o e

xist

ing

SL

R

•hi

gh d

egre

e of

red

un

dan

cy

•in

dep

end

ent

on S

LR u

nder

test

- si

gnal

pro

cess

ing

and

cabl

ing

- gr

ound

ing,

pow

er li

ne,

RF

shi

eldi

ng-

timin

g (t

ime

inte

rval

, epo

ch)

- ca

libra

tion

targ

ets

and

grou

nd s

urve

y-

data

acq

uisi

tion

and

data

pro

cess

ing

- op

erat

ors

and

habi

ts

•hi

gh q

ualit

y in

stru

men

ts (

P-P

ET

, M

eteo

, Epo

ch &

Fre

q.)

•=

> h

igh

prec

isio

n S

LR d

ata

acqu

ired

on th

e P

CS

•=

> id

entif

icat

ion

of “

prob

lem

are

as”

and

impr

ovem

ent o

s S

LR

Page 43: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Zim

mer

wal

d, 2

4hou

r M

issi

on,M

ay 2

7-28

,199

8T

wo

wav

elen

gth

rang

ing

Orig

inal

sta

tion

setu

p15

0 ps

ec

Afte

r sy

stem

re-

cabl

ing

and

dete

ctor

s tu

ning

SLR

sys

tem

120

psec

P-P

ET

tim

ing

76 p

sec

@ r

ed58

pse

c @

blu

e

Page 44: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Sha

ngha

i SLR

, Lag

eos,

Aug

. 19,

2001

SLR

tim

ing

1

3.5

mm

RM

S P

CS

-PE

T ti

min

g 7

.0 m

m R

MS

Page 45: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

PC

S-P

ET

Mis

sion

, TIG

O, 1

998

Tw

o w

avel

engt

h ra

ngin

g

P-P

ET

4 x

SR

620

SR

620

timin

gin

frar

ed12

0 ps

ecbl

ue 9

5 ps

ecP

-PE

T t

imin

gin

frar

ed 7

5 ps

ecbl

ue 4

5 ps

ec

Page 46: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

PC

S C

apab

ilitie

s -

Com

paris

on

Syst

emat

ic e

rror

sou

rcec

ollo

catio

nPor

tabl

e C

alib

ratio

n St

anda

rdfr

eque

ncy

and

epoc

hyes

yesm

ount

ecc

entr

icity

yesp

artia

llyco

rrel

ated

RF

nois

eyes

part

ially

inst

rum

enta

l err

orsy

esye

ssta

bilit

yyes

yese

cho

sign

al s

tren

gthy

esye

sdat

a pr

oces

sing

yesy

esop

erat

or e

rror

syes

yess

hot b

y sh

ot c

ompa

riso

nnoy

esat

mos

pher

ic d

atay

esye

sexp

erim

ent c

ompl

exity

and

cos

ts>

101

time

fram

e> 1

01

Page 47: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

K. H

amal

, I.P

roch

azka

, P

ragu

e, M

ay 2

003

SLR

Mac

hine

Bia

s R

educ

tion

Pro

cedu

re

Con

clus

ion

•P

orta

ble

Cal

ibra

tion

Sta

ndar

d ba

sed

on a

Pic

o E

vent

Tim

eris

a p

ower

ful t

ool t

o id

entif

y sy

stem

atic

err

or s

ourc

es in

the

SLR

“ra

ngin

g m

achi

ne”

on th

e m

m s

cale

•th

e en

tire

syst

em is

com

pact

, eas

y to

tran

spor

t fas

t to

inst

all

and

user

frie

ndly

to o

pera

te,

the

calib

ratio

n m

issi

on c

an b

e ac

com

plis

hed

with

in o

ne w

eek

time

slot

,

•P

-PE

T m

issi

on to

SLR

site

s di

d tr

igge

r se

vera

l pro

ject

s-

WLR

S (

1998

), T

IGO

(199

9), G

raz

(200

0) t

imin

g sy

stem

s up

grad

e-

Eur

opea

n m

illim

eter

SLR

join

t act

ivity

(20

02),

- H

erst

mon

ceux

Wor

ksho

p (2

002)

Page 48: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Hon

eyw

ell T

echn

olog

y S

olut

ions

Inc

1

NA

SA S

LR

Sys

tem

Cal

ibra

tion

Tec

hniq

ues

Ext

erna

l Cal

ibra

tions

to E

stab

lishe

d, S

tabl

e an

d F

orm

ally

Sur

veye

d G

roun

d T

arge

ts

•90

min

ute

max

imum

cyc

le ti

me

per

trac

king

sce

nari

o –

(Offs

ettin

g po

tent

ial

diur

nal e

ffect

and

sys

tem

atic

dri

fts)

•C

alib

ratio

n T

arge

t Ran

ges

< 30

0M

•C

alib

ratio

n Pi

er d

esig

n –

conc

rete

and

met

al r

einf

orce

d fo

r lo

ng te

rm s

tabi

lity

•O

ptic

ally

cal

ibra

ted

corn

er c

ubes

– o

ptic

al tr

ansi

t pat

h m

easu

red

& a

ccou

nted

for

inca

libra

tion

rang

e

•Pr

e &

Pos

t Cal

ibra

tions

to o

pera

tiona

l gro

und

targ

et ~

100

0 Sh

ots

•R

ecei

ve a

mpl

itude

s m

aint

aine

d w

ithin

dyn

amic

ran

ge o

f th

e C

onst

ant F

ract

ion

Dis

crim

inat

or f

or P

re a

nd P

ost C

alib

ratio

n A

ND

ope

ratio

nal s

atel

lite

trac

king

•G

roun

d T

est C

alib

ratio

ns to

mul

tiple

targ

ets

also

use

d as

dia

gnos

tic to

ol

Page 49: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Hon

eyw

ell T

echn

olog

y S

olut

ions

Inc

2

Sta

tio

nT

arg

et

Azi

mu

thE

levati

on

Deg

.

Ran

ge

m

Ta

hit

iA

42.8

45

6.5

5171.2

62

Fre

nch

Po

lyn

esia

B138.8

54

4.4

24

263.2

34

C332.2

72

-1.5

26

122.6

95

Are

qu

ipa

A10.2

3-1

.81

105.9

49

Pe

ruB

48.1

67

-1.2

65

105.9

78

C132.0

63

0.8

18

423.2

9

D205.4

12

-3.0

29

51.4

38

E46.9

28

5.0

73

870

Mt.

Hale

akala

A116.7

18

-8.7

32

39.1

29

Haw

aii

B114.9

99

-8.7

09

1109.6

35

C85.5

11

-1.3

16

602.0

99

D116.7

18

-8.7

32

39.1

29

* M

cDon

ald,

USA

– P

erfo

rms

inte

rnal

Cal

ibra

tions

= O

pera

tiona

l Tar

get

NA

SA S

LR

Sys

tem

Cal

ibra

tion

Mo

nu

men

t P

eak

Cal

ibra

tio

n S

hif

ts

-12

.0

-8.0

-4.0

0.0

4.0

8.0

12

.0 Ju

n-0

0O

ct-

00

Ja

n-0

1A

pr-

01

Ju

l-0

1N

ov

-01

Fe

b-0

2M

ay

-02

Se

p-0

2D

ec

-02

Ma

r-0

3J

un

-03

Oc

t-0

3J

an

-04

Cal Shift (mm)

Mo

nu

men

t P

eak

Cal

ibra

tio

n R

MS

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10

.0

11

.0

12

.0 Ju

n-0

0O

ct-

00

Ja

n-0

1A

pr-

01

Ju

l-0

1N

ov

-01

Fe

b-0

2M

ay

-02

Se

p-0

2D

ec

-02

Ma

r-0

3J

un

-03

Oc

t-0

3J

an

-04

Cal RMS (mm)

fg

Nom

inal

Com

bine

d C

al. R

MS

4.0m

m –

6.0

mm

Nom

inal

Pre

to P

ost C

alib

ratio

n Sh

ift <

4.0m

m

Sta

tio

nT

arg

etA

zim

uth

Ele

vati

on

D

eg.

Ran

ge

m

Mo

nu

men

t P

eak

A1

03

.50

44

.09

31

87

.00

3

US

AB

17

7.4

27

-1.0

89

19

55

.26

8

C1

98

.85

4-0

.43

31

07

.37

1

Yar

rag

adee

A1

6.8

56

0.1

76

31

16

.74

2

Au

stra

liaB

14

.77

8-1

.15

41

50

.42

5

C1

2.3

36

-1.3

76

10

0.4

19

Ha

rte

be

es

tho

ek

A3

.76

0.4

67

15

0.2

46

So

uth

Afr

ica

B4

8.4

57

2.2

18

96

.88

2

C1

26

.75

21

.86

10

0.6

42

D2

29

.49

-0.8

61

31

.15

E2

78

.62

6-2

.34

41

98

.66

4

I1

04

.54

73

.04

81

41

.05

5

Gre

en

be

ltA

65

.18

9-3

.14

11

06

.67

3U

SA

B9

5.5

15

-1.7

37

17

4.8

33

C1

05

.16

5-1

.67

11

70

.52

6

Page 50: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

Hon

eyw

ell T

echn

olog

y S

olut

ions

Inc

3

Mon

umen

t Pea

k (M

obla

s-4)

Sch

edul

e fo

r10

/22/

03

Sche

dule

d C

alib

rati

ons

Page 51: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

1H

oney

wel

l Tec

hnol

ogy

Sol

utio

ns In

c

NA

SA S

LR

Met

eoro

logi

cal M

easu

rem

ent

Sens

or(M

ET

3) C

alib

rati

on T

echn

ique

Pres

sure

, Tem

pera

ture

, and

Hum

idity

Mea

sure

men

t

•T

wo

Yea

r C

alib

ratio

n C

ycle

:

¸St

atio

n’s

unit

repl

aced

with

a m

anuf

actu

rer

calib

rate

d se

nsor

pac

kage

¸Pr

e/Po

st in

stal

latio

n ca

libra

tion

repo

rts

exam

ined

for

ano

mal

ies

¸C

alib

ratio

n re

port

s w

ill b

e m

aint

aine

d in

a d

atab

ase

¸N

IST

trac

e-ab

ility

mai

ntai

ned

(Pre

ssur

e Se

nsor

)

•O

ne Y

ear

Prev

entiv

e M

aint

enan

ce C

ycle

Pres

sure

– A

ccur

acy:

± 0

.08

mB

ar, S

tabi

lity:

< 0

.1 m

Bar

per

yea

r

Tem

pera

ture

– A

ccur

acy:

£ 0

.5 D

egre

e C

, Sta

bilit

y: B

ette

r th

an 0

.1 D

egre

e C

Rel

ativ

e H

umid

ity –

Acc

urac

y: ±

2%

RH

(@

25

Deg

ree

C),

Sta

bilit

y: B

ette

r th

an 1

% p

er y

ear

Futu

re I

mpr

ovem

ents

– M

ET

3A, b

ette

r pe

rfor

min

g pr

essu

re tr

ansd

ucer

, hig

her

accu

racy

te

mpe

ratu

re r

eadi

ngs,

fas

ter

hum

idity

sat

urat

ion

reco

very

tim

e

Page 52: Session 7 System Calibration - NASASession 7 System Calibration Ulrich Schreiber, Ivan Prochazka. L aser S ystem C alibration U lrich Schreiber Ivan Prochazka. Preamble RANGE Errors:

1000

1005

1010

1015

1020

1025

1030

JAN

FE

BM

AR

AP

RM

AY

JUN

JUL

AU

GS

EP

OC

TN

OV

DE

C

Avg. Pressure (mB)

-6-4-20246

Jan-97

May-97

Sep-97

Jan-98

May-98

Sep-98

Jan-99

May-99

Sep-99

Jan-00

May-00

Sep-00

Jan-01

May-01

Sep-01

Jan-02

May-02

Sep-02

Jan-03

May-03

Pressure Offsets (mB)

-6-4-20246

The

eff

ect o

f a

baro

met

er

chan

ge o

r re

-cal

ibra

tion