ae9/ap9/spm: new models for radiation belt and space plasma · pdf fileafrl-rv-ps- afrl-rv-ps-...

AFRL-RV-PS- AFRL-RV-PS- TP-2016-0003 TP-2016-0003

AE9/AP9/SPM: NEW MODELS FOR RADIATION BELT AND SPACE PLASMA SPECIFICATION

W. Robert Johnston, et al.

05 May 2014

Briefing Charts

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3. DATES COVERED (From - To)01 Oct 2007 – 30 Sep 2015

4. TITLE AND SUBTITLEAE9/AP9/SMP: New Models for Radiation Belt And Space Plasma Specification

5a. CONTRACT NUMBER

5b. GRANT NUMBER

5c. PROGRAM ELEMENT NUMBER 62601F

6. AUTHOR(S)W. Robert Johnston, T. Paul O’Brien, Gregory P. Ginet, Stuart L. Huston, Timothy B. Guild, and Judy A. Fennelly

5d. PROJECT NUMBER 1010

5e. TASK NUMBER PPM00004262

5f. WORK UNIT NUMBER EF004375

7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Air Force Research Laboratory Space Vehicles Directorate 3550 Aberdeen Avenue SE Kirtland AFB, NM 87117-5776

8. PERFORMING ORGANIZATION REPORTNUMBER

AFRL-RV-PS-TP-2016-0003

9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR’S ACRONYM(S)AFRL/RVBXR

11. SPONSOR/MONITOR’S REPORTNUMBER(S) NA

12. DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. (377ABW-2014-6084 dtd 16 Apr 2014)

13. SUPPLEMENTARY NOTES

14. ABSTRACT A new set of models for the flux of particles in the Earth’s inner magnetosphere has been developed for use in space system design and other applications requiring a climatological specification. Denoted AE9, AP9, and SPM for energetic electrons, energetic protons and space plasma, respectively, the models are derived from 33 data sets measured by satellite on-board sensors. These data sets have been processed in a manner to create maps of the particle fluxes together with estimates of uncertainties due to both imperfect measurements and space weather variability. Furthermore, the model architecture permits the Monte-Carlo estimation of the time evolution of fluxes and derived quantities, e.g. the median and 95th percentile, along an arbitrary orbit. An overview of the model will be presented, addressing in particular the latest AE9/AP9 version release.

15. SUBJECT TERMSEnergetic electrons, energetic protons, space plasma, Radiation Model, AE9, AP9, SPM, space craft design 16. SECURITY CLASSIFICATION OF: 17. LIMITATION

OF ABSTRACT 18. NUMBEROF PAGES

19a. NAME OF RESPONSIBLE PERSON Adrian Wheelock

a. REPORTUnclassified

b. ABSTRACTUnclassified

c. THIS PAGEUnclassified

Unlimited 30 19b. TELEPHONE NUMBER (include area code)

Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std. 239.18

Presented at SPIE Defense Security & Sensing (DSS) Conference, Baltimore, MD, 05-09 May 2014. Government purpose rights.

Inte

grity

S

ervi

ce

Exc

elle

nce

Air

Forc

e R

esea

rch

Labo

rato

ry

AE9

/AP9

/SPM

: New

M

odel

s fo

r Rad

iatio

n B

elt a

nd S

pace

Pl

asm

a Sp

ecifi

catio

n

05 M

ay 2

014

Pres

ente

d by

: Ju

dy A

. Fen

nelly

, PhD

C

hief

Eng

inee

r B

attle

spac

e En

viro

nmen

t Div

isio

n A

ir Fo

rce

Res

earc

h La

bora

tory

Approved for public release;distribution is unlimited. 1

Aut

hors

•Bob

Joh

nsto

n A

ir Fo

rce

Res

earc

h La

b (P

rinci

pal I

nves

tigat

or)

•Pau

l O’B

rien

Aer

ospa

ce C

orp.

(Prin

cipa

l Inv

estig

ator

) •G

rego

ry G

inet

MIT

Lin

coln

Lab

(Prin

cipa

l Inv

estig

ator

) •S

tuar

t Hus

ton

Atm

osph

eric

& E

nviro

nmen

t Res

earc

h In

c.

•Tim

othy

Gui

ld A

tmos

pher

ic &

Env

ironm

ent R

esea

rch

Inc.

•J

udy

Fenn

elly

Air

Forc

e R

esea

rch

Lab

Approved for public release; distribution is unlimited. 2

Presenter

Presentation Notes

Partners: AFRL, Aerospace, MIT Lincoln Labs, AER, Boston College, and LANL

Out

line

•In

trod

uctio

n•

Ove

rvie

w o

f AE9

/AP9

/SPM

•M

odel

App

licat

ion

•Va

lidat

ion

and

Com

paris

ons

•C

urre

nt &

Fut

ure

Rel

ease

s•

Sum

mar

y


Intr

oduc

tion

to A

E9/A

P9/S

PM

AE9

/AP9

/SPM

is a

sui

te

of e

mpi

rical

mod

els

desc

ribin

g th

e tr

appe

d el

ectr

on, p

roto

n, a

nd

plas

ma

in th

e ne

ar e

arth

sp

ace

envi

ronm

ent

•A

E9/A

P9/S

PM m

eets

the

sate

llite

and

spa

cein

stru

men

tatio

n de

sign

com

mun

ity’s

nee

d fo

rra

diat

ion

envi

ronm

ent

spec

ifica

tion

mod

el–

Res

pons

ive

tool

with

expa

nded

rang

e of

feat

ures

not a

vaila

ble

with

lega

cym

odel

s–

Use

s th

e m

ost u

p-to

-dat

eda

ta a

vaila

ble

–In

trod

uces

qua

ntita

tive

stat

istic

s fo

r use

in d

esig

nef

fort

s


Nea

r-Ea

rth

Rad

iatio

n En

viro

nmen

t


Presenter

Presentation Notes

AE9/AP9 covers L values from 0.98 to 12.4; SPM covers L values 2 to 10. GEO is at 6.6 Re, GPS at 4 Re.

Nee

d fo

r Acc

urat

e N

ear-

Eart

h

Rad

iatio

n En

viro

nmen

t Est

imat

ions

AE8,

APE

Max

Mea

sure

d C

RR

ES

Mod

eled

CR

RES

Ener

getic

pro

tons

, el

ectr

ons

and

plas

ma

pose

a w

ide

rang

e of

ha

zard

s to

spa

cecr

aft

and

com

pone

nts

Thes

e ha

zard

s ar

e dy

nam

ic a

nd s

omet

imes

no

t acc

urat

ely

capt

ured

in

lega

cy m

odel

s


Lega

cy S

pace

Env

ironm

enta

l El

ectr

on a

nd P

roto

n M

odel

s

AE8

& A

P8 e

lect

ron

and

prot

on e

mpi

rical

m

odel

s ar

e th

e m

ost

wid

ely

used

of t

he

vario

us le

gacy

mod

els

•Th

ese

are

capa

ble

mod

els,

but d

o no

t mee

t em

ergi

ngne

eds

of th

e de

sign

com

mun

ity

•AE

8/A

P8 la

cked

the

abili

ty to

trad

eac

tual

env

ironm

enta

l ris

ks li

keot

her s

yste

m r

isks

–AE

8/AP

8 co

uld

neve

r ans

wer

ques

tions

suc

h as

“ho

w m

uch

risk

can

be a

void

ed b

y do

ublin

g th

esh

ield

ing

mas

s?”

•In

accu

raci

es a

nd la

ck o

f ind

icat

ions

of u

ncer

tain

ty–

Cre

ates

the

nece

ssity

of e

xces

sive

mar

gin

in d

esig

ns•

No

plas

ma

spec

ifica

tion

–U

nkno

wn

surf

ace

dose

effe

cts

•N

o na

tura

l dyn

amic

s–

Not

pre

sent

are

env

ironm

ents

for

inte

rnal

cha

rgin

g or

wor

st c

ase

prot

on e

ffect

s, s

uch

as s

ingl

e ev

ent

effe

cts

(SEE

s)


AE9

/AP9

/SPM

Em

piric

al R

adia

tion

B

elt a

nd S

pace

Pla

sma

Mod

el S

uite

AE9

/AE9

/SPM

sui

te

prov

ides

adv

ance

d ca

pabi

litie

s fo

r es

timat

ing

the

natu

ral

trap

ped

radi

atio

n en

viro

nmen

t in

near

-Ear

th S

pace

for s

atel

lite

desi

gn

•U

npre

cede

nted

cov

erag

e in

ene

rgie

san

d pa

rtic

le ty

pes

addr

essi

ng m

ajor

spac

e en

viro

nmen

tal h

azar

ds

•In

clud

es u

ncer

tain

ties

and

dyna

mic

sth

at h

ave

neve

r be

en a

vaila

ble

for

use

in d

esig

n–

Dat

a-ba

sed

stat

istic

s qu

antif

ying

unce

rtai

ntie

s fr

om b

oth

mea

sure

men

tsan

d sp

ace

wea

ther

var

iabi

lity

–Es

timat

e de

sign

mar

gins

(95t

hpe

rcen

tile

rath

er th

an a

rbitr

ary

fact

ors)

•D

ynam

ic s

cena

rios

allo

w u

sers

tocr

eate

wor

st c

ases

for i

nter

nal

char

ging

, sin

gle

even

t effe

cts,

and

impa

cts

on m

issi

on li

fe


AE9

/AP9

/SPM

Sui

te C

over

age

MO

DEL

AE

9 AP

9 SP

M

Spec

ies

e- H+

e- , H+ ,

He+ ,

O+

L Ra

nge

0.98

< L

* < 1

2.4

0.98

< L

* <

12.4

2

< L m

< 1

0

Ener

gy R

ange

40

keV

– 1

0 M

eV

100

keV

– 40

0MeV

(V1.

0-V1

.05)

10

0keV

– 2

GeV

(V1.

20)

e- : 1

-40

keV

H+ , He

+ , O

+ : 1.

15 –

164

keV

•AE9

/AP9

cov

ers

trap

ped

radi

atio

n ov

er fu

ll ra

nge

of o

rbit

regi

mes

•SP

M in

trod

uces

cov

erag

e of

pla

sma

ener

gies

and

spe

cies

•AP9

V1.

20 w

ill e

xten

d en

ergy

rang

e up

to 2

GeV

, bas

ed o

n Va

n Al

len

P rob

e ob

serv

atio

ns


Presenter

Presentation Notes

Expected release of V1.20 end of summer FY14

Ran

ge o

f Nea

r-Ea

rth

Part

icle

Haz

ards

PART

ICLE

ENER

GIE

S :

1

eV

10 e

V

10

0 eV

1 k

eV

1

0 ke

V

1

00 k

eV

1

MeV

10 M

eV

1

00 M

eV

1

GeV

Pla

smas

pher

e R

ing

Cur

rent

& A

uror

al P

reci

pita

tion

Rad

iatio

n B

elt P

artic

les

AE9/

AP9

/SPM

Sui

te

Ener

gy R

ange

Cov

erag

e (tr

appe

d pa

rtic

les

only

)


Presenter

Presentation Notes

Note that SPM includes trapped plasma at ring current energies, but it does not include untrapped plasma sheet and auroral particles. We plan to add these in future versions. Plasmasphere particles are below energy coverage of SPM.

AE9

/AP9

/SPM

Inco

rpor

ates

H

igh-

Qua

lity

Dat

a Se

ts

The

AE9

/AP9

/SPM

sui

te is

ba

sed

on d

ata

sets

mos

tly

acqu

ired

afte

r dev

elop

men

t of

AE8

and

AP8

and

cov

ers

grea

ter s

patia

l and

ene

rgy

rang

es th

an th

e pr

ior m

odel

s •

Map

s of

the

part

icle

flux

es a

recr

eate

d fr

om th

ese

data

set

s•

Estim

ates

of u

ncer

tain

ties

incl

ude

both

mea

sure

men

tsun

cert

aint

ies

and

spac

ew

eath

er v

aria

bilit

y

•AE

9/A

P9/S

PM in

corp

orat

es 3

3da

ta s

ets

mea

sure

d by

spa

ce-

base

d se

nsor

s•

Dat

a se

ts w

ere

sele

cted

for

accu

racy

in in

ner m

agne

tosp

here

•D

ata

durin

g so

lar p

roto

n ev

ents

wer

e el

imin

ated

–re

sulti

ng m

aps

desc

ribe

trap

ped

radi

atio

n on

ly•

Cro

ss-c

alib

ratio

n w

as d

one

to a

sing

le s

tand

ard

sens

or, b

oth

elim

inat

ing

rela

tive

bias

es a

ndpr

ovid

ing

estim

ates

of

mea

sure

men

t unc

erta

inty


Dat

a Se

ts

Use

d fo

r AE9

/AP9

/SPM

AE9/

AP

9/

SPM

da

ta

sour

ces

Will

be

used

in

futu

re

vers

ions

Mos

t dat

a se

ts u

sed

cove

r m

in+m

ax

sola

r cyc

le

cond

ition

s


Presenter

Presentation Notes

V1.20: will use TacSat-4 for protons, THEMIS for plasma, Van Allen Probe for extended proton energy range. V1.50: will use Van Allen Probe for electrons and protons. V2.00: will use DSX for electrons, protons and plasma.

Exam

ples

of F

utur

e A

E9/A

P9/S

PM

Dat

a Se

ts

Key

: El

ectr

on E

nerg

ies

Prot

on E

nerg

ies

Ion

Ener

gies


Presenter

Presentation Notes

Van Allen Probe RPS data used in AP9 V1.20 to extend energy range to 2 GeV. Van Allen Probe data will be added in V1.50. DSX data will be added in a later version.

Energy (keV)

TEM

1c P

C-4

(6.7

7%)

L2

34

56

78

102

103

104

•Cre

ates

map

s fo

r med

ian

and

95th

per

cent

ile o

f dis

trib

utio

nfu

nctio

n–

Map

s ch

arac

teriz

es b

oth

nom

inal

and

extr

eme

envi

ronm

ents

•Inc

lude

s er

ror m

aps

with

inst

rum

ent u

ncer

tain

ty

AE9

/AP9

/SPM

A

rchi

tect

ure

Ove

rvie

w

18 m

onth

s

L shell (Re)

1.0

7.0

Stat

istic

al M

onte

-Car

lo

Mod

el

•C

ompu

te s

patia

l and

tem

pora

l cor

rela

tion

assp

atio

tem

pora

l cov

aria

nce

mat

rices

•Se

t up

Nth

-ord

er a

uto-

regr

essi

ve s

yste

m to

evo

lve

pert

urbe

d m

aps

in ti

me

Use

r app

licat

ion

•R

uns

stat

istic

al m

odel

N ti

mes

with

diff

eren

t ran

dom

see

ds to

get N

flux

pro

files

•C

ompu

tes

dose

rate

, dos

e or

othe

r des

ired

quan

tity

deriv

able

from

flux

for e

ach

scen

ario

•Ag

greg

ates

N s

cena

rios

to g

etm

edia

n, 7

5th a

nd 9

0th c

onfid

ence

leve

ls o

n co

mpu

ted

quan

titie

s

Sate

llite

dat

a &

theo

ry

Use

r’s o

rbit

+ =

50th

75th

95th

Mis

sion

tim

e

Dose

AE9/

AP9

/SPM

Cre

ates

Fl

ux M

aps

ba

sed

on S

atel

lite

Dat

a


Presenter

Presentation Notes

On evolution of perturbed maps (middle): Covariance matrices give space weather dynamics, and flux maps perturbed with error estimate give instrument uncertainty.

How

to U

se A

E9/A

P9

•M

odel

pro

vide

d w

ith G

UI a

ndC

mdL

ine

acce

ss•

Spec

ify in

put a

nd o

ptio

ns:

•or

bita

l ele

men

ts o

r eph

emer

is•

coor

dina

te s

yste

m•

mod

el(s

) to

use—

AE9/

AP9

/SPM

,le

gacy

mod

els

•m

ode—

e.g.

mea

n or

Mon

te C

arlo

scen

ario

s•

Mod

el p

rovi

des

requ

este

dqu

antit

ies

•flu

xes,

flue

nces

, dos

es•

Res

ults

for a

ppro

pria

te m

odes

incl

ude

stat

istic

s (e

.g. m

edia

n an

d95

th p

erce

ntile

) for

risk

asse

ssm

ent

100

101

102

103

104

105

106

107

108

109

Ene

rgy,

MeV

Flux #/cm2/s/MeV

GP

S, 9

5% C

onfid

ence

, Wor

st C

ase

24-h

our a

vera

ge

0.5

year

s1

year

s2

year

s3

year

s4

year

s5

year

s6

year

s7

year

s8

year

s9

year

s10

yea

rs


Mod

el C

ompa

rison

and

Val

idat

ion

Mod

el c

ompa

rison

s an

d va

lidat

ions

con

duct

ed:

•A

E9/A

P9/S

PM re

sults

com

pare

d to

lega

cy m

odel

sin

clud

ing

AE8

/AP8

•A

E9/A

P9 re

sults

val

idat

edag

ains

t ind

epen

dent

LEO

,H

EO, G

EO d

ata

sets

•Im

plem

enta

tions

of A

E8/A

P8an

d SH

IELD

OSE

with

inA

E9/A

P9 to

ol v

alid

ated

agai

nst r

esul

ts fr

omSP

ENVI

S an

d IR

BEM

AE8M

AX

AE9

Mea

n AE

9 M

edia

n AE

9 Sc

enar

ios 7

5%

AE9

Scen

ario

s 95%

AE8,

AE9

in G

TO


Presenter

Presentation Notes

Right plot shows one week AE9 fluence results for a GTO orbit: black lines show individual Monte Carlo scenarios, colored lines show AE9 statistics and AE8 max for comparison.

AE9

/AP9

Com

pare

d to

AE8

/AP8

prot

ons

(30

MeV

) el

ectr

ons

(2 M

eV)

AP8

AP9

AE8

AE9


Presenter

Presentation Notes

(left) Comparison of AP8 (top) and AP9 V1.05 median (bottom) on a meridional cut through the radiation belts, 30 MeV proton fluxes. (right) Same format, but for AE8 (top) and AE9 V1.05 median (bottom), 2 MeV electron fluxes. Axis labels are in units of Earth radii.

AP9

Val

idat

ion—

POES

15

(LEO

)

POES

15

obse

rvat

ions

, >3

6 M

eV p

roto

ns

AP9

med

ian

resu

lts,

>36

MeV

pro

tons


Presenter

Presentation Notes

Validation of >36 MeV proton median fluxes vs. geographic location in LEO, (left) POES N15/SEM observations, 1998-2011, and (right) AP9 results for POES N15 orbit, 1 year run. POES at 840KM

AP9

Val

idat

ion—

POES

15

(LEO

)


Presenter

Presentation Notes

Validation of >36 MeV proton fluxes vs. time for POES N15, with POES data (blue) and AP9 results (red). Peaks represent passes through the SAA.

AE9

Val

idat

ion—

GO

ES 1

0 (G

EO)


Presenter

Presentation Notes

Validation of >2 MeV electron cumulative mission fluences, 10 years, showing 40 AE9 V1.05 individual Monte Carlo scenarios (grey lines), resulting AE9 statistics (color), GOES 10/MEPED observations, and AE8 active/quiet results. AE9 represent range of solar cycle conditions but not solar cycle phase—note that GOES observations are below the AE9 results early on, but the long-term average (=one solar cycle) is well represented by AE9.

AE9

/AP9

Flu

ence

and

Dos

e Es

timat

es,

LEO

(800

km

)


Presenter

Presentation Notes

(left) Mean proton fluence spectra for one year in LEO orbit (800 km polar) from AP9 perturbed mean runs (blue) with same from AP8 max (black) and CRRESPRO (red). (right) Dose vs. depth curves, using AP9+AE9 and SHIELDOSE2, with results from AP8+AE8 for comparison, one year in LEO orbit (800 km polar).

AE9

/AP9

/SPM

Flu

ence

Est

imat

es,

GEO


Presenter

Presentation Notes

Fluence vs. energy for electrons, one year in GEO orbit (36000 km equatorial), from AE9 V1.20, SPME (plasma electrons), and AE8 max. Results from each of 40 MC scenarios for AE9 and 40 perturbed mean scenarios for SPME are shown by grey lines, with composite statistics shown in color. SPM does not include Monte Carlo capability, consequently SPM shows less variability than AE9 (visible at overlapping energy of 40 keV).

AE9

/AP9

Dos

e Es

timat

es,

GTO


Presenter

Presentation Notes

Dose vs. depth curves, using AE9/AP9 or AE8/AP8 max and SHIELDOSE2, 1 day in GTO orbit (300 x 36000 km, 10° incl.), hemispherical geometry.

AE9

/AP9

/SPM

C

urre

nt V

ersi

on a

nd F

utur

e Pl

ans

•V1

.0 re

leas

ed in

201

2, c

urre

nt v

ersi

on V

1.05

rele

ased

in 2

013

•AE

9/A

P9 p

ropo

sed

as a

n IS

O s

tand

ard

trap

ped

radi

atio

n m

odel

•V1

.2 fe

atur

es–

New

dat

a: T

acSa

t-4 p

roto

ns, T

HEM

IS p

lasm

a–

New

feat

ures

: m

ore

orbi

t ele

men

t/coo

rdin

ate

optio

ns, p

itch

angl

e to

ol

•V1

.5 fe

atur

es–

Para

lleliz

atio

n ca

pabi

lity

for r

uns

on c

lust

ers—

need

ed to

spe

ed u

p lo

ng ru

ns–

New

ker

nel-b

ased

effe

cts

calc

ulat

ion

–N

ew d

ata:

Va

n Al

len

Prob

e &

Azu

r pr

oton

s, V

an A

llen

Prob

e &

DEM

ETER

ele

ctro

ns,

SCAT

HA

& A

MPT

E pl

asm

a–

Inte

rnat

iona

l col

labo

rato

rs c

ontr

ibut

ions

of d

ata

and

mod

els

–Fu

ture

nam

e IR

ENE

— In

tern

atio

nal R

adia

tion

Envi

ronm

ent N

ear E

arth

•V2

.0 a

nd la

ter f

eatu

res

–Sa

mpl

e so

lar c

ycle

flyt

hrou

gh o

ptio

n–

New

mod

ules

–N

ew d

ata:

PAM

ELA

, DSX

/SW

x, E

RG


Presenter

Presentation Notes

PAMELA (Italian sensor flying on Russian satellite LEO data set) ERG (Japanese mission like Van Allen sats)

Ker

nel-B

ased

Effe

cts

Cal

cula

tion

•V1

.5 w

ill in

clud

e AE

9/A

P9 c

apab

ility

to u

se in

depe

nden

tly-c

alcu

late

dra

diat

ion

effe

cts

for f

aste

r effe

cts

resu

lts in

the

AE9/

AP9

env

ironm

ent:

–U

ser p

reco

mpu

tes

desi

red

effe

ct v

s. d

epth

/par

ticle

/ene

rgy

for a

par

ticul

arm

ater

ial/g

eom

etry

/com

pone

nt, u

sing

inde

pend

ent p

artic

le s

imul

atio

n co

de–

Res

ults

are

form

atte

d as

a “

kern

el”

for i

mpo

rt in

to A

E9/A

P9/S

PM–

AE9/

AP9/

SPM

env

ironm

ent p

lus

effe

cts

kern

el y

ield

s ra

pid

calc

ulat

ions

of s

peci

fic e

ffect

s

Full

MU

LASS

IS

calc

ulat

ion:

4 h

rs

Prec

ompu

ted

conv

olut

ion:

<1

sec

•Sa

mpl

e ke

rnel

for s

ingl

eev

ent e

ffect

s is

inde

velo

pmen

t•

Prov

ides

abi

lity

to ra

pidl

yob

tain

AE9

/AP9

env

ironm

ent

effe

cts

for s

peci

ficco

mpo

nent

s

O’B

rien

and

Kwan

, 201

3, A

eros

pace

Rep

ort T

OR-

2013

-005

29 A


Presenter

Presentation Notes

Particle simulation codes—examples are MULASSIS, GEANT. Precomputed kernel for example in diagram took 2-3 weeks.

Sum

mar

y

•A

E9/A

P9/S

PM m

eets

the

desi

gn c

omm

unity

’s n

eed

for

stat

e-of

-the-

art r

adia

tion

envi

ronm

ent s

peci

ficat

ion

–M

ore

cove

rage

in e

nerg

y an

d lo

catio

n–

Intr

oduc

es s

tatis

tics

desc

ribin

g un

cert

aint

ies

and

envi

ronm

ent

varia

bilit

y

•Pl

ans

are

in p

lace

for f

utur

e up

date

s in

bot

h da

ta a

ndfe

atur

es–

Arch

itect

ure

supp

orts

upd

ates

with

new

dat

a–

Futu

re fe

atur

es w

ill e

xpan

ded

capa

bilit

ies,

add

ress

ing

addi

tiona

lha

zard

s an

d m

ore

optio

ns fo

r app

lyin

g m

odel

resu

lts to

des

ign


Con

tact

Info

rmat

ion

•C

omm

ents

, que

stio

ns, e

tc. a

re w

elco

me

and

enco

urag

ed!

•Pl

ease

sen

d fe

edba

ck to

(cop

y al

l):–

Bob

Joh

nsto

n, A

ir Fo

rce

Res

earc

h La

bora

tory

, AFR

L.R

VBXR

.AE9

.AP9

.Org

.Mbx

@ki

rtla

nd.a

f.mil

–Pa

ul O

’Brie

n, A

eros

pace

Cor

pora

tion,

pau

l.obr

ien@

aero

.org

–G

rego

ry G

inet

, MIT

Lin

coln

Lab

orat

ory,

gre

gory

.gin

et@

ll.m

it.ed

u

•In

form

atio

n an

d di

scus

sion

foru

m a

vaila

ble

on N

ASA

SET

web

site

:•

http

://lw

s-se

t.gsf

c.na

sa.g

ov/ra

diat

ion_

mod

el_u

ser_

foru

m.h

tml

•Th

e m

odel

will

eve

ntua

lly b

e av

aila

ble

for w

eb d

ownl

oad

–In

the

mea

ntim

e co

ntac

t Gre

gory

Gin

et, M

IT L

inco

ln L

abor

ator

y, g

rego

ry.g

inet

@ll.

mit.

edu


mailto:[email protected]



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