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St ~ ~ ad W07. ADDRESS (City, Stare. andt ZIP Code).SOREO WDI NJL3R

Fort Monroe, VA 23651-5000 PROGRAM POJC TAK IOR UTELEMENT NoD. I40 PROC 0N. rACCSSIOIN NO.

It. TITLE= (incltude Secunity CGazwifca ton)

BATTLEKING Evaluation, BK 22-91. Meteorological Sensor Package (lISP) (U)

12. PERSONAL AUTHOR(S)Johnson, Christine M., CPT13a. TYPE OF REPORT 13b. TIME COVERED 14. DATE OF REPORT (Year Month, D3Y) IS. PAGE COUNTFinal I F0M

9 10 51 4 TO9 10 5 16 1910924 1616. SUPPLEMENTARY NOTATION

NA

17. COSATI CODES 18, SUBJECT TERMS (Continue on reverse of necessary and oden ! j b ock number)

FIELD GROUP SUB4ROUP -Meteorological Sensor Package.. BATThEKIENG-

1 .19. ABSTRACT (Continue on reverse of necessary and identify byblocknubrLetter report covering the lISP BATTLENGc Evaluatin conducted at Fort Sill, Oklahoma,

14-16 May 1991. The lISP was Ievaluated to determine if it could provide the data for a nine-

line meteorological message ana-~provide low-level wind dat- for the multiple-launch rocket

0) system. The lISP produced a nine-,' ne met message hosed o. surface readings taken by the

sensor assembly for wind direction , Frina speed, temperature, and pressure. The lISP generated

messages were compared to the meteorological data systems' messages. Although thesuitability of the lISP, as an alternati{ve to the lIDS system, could not be thoroughly assessed

-i~ the lISP does provide an approximation of the current met effects as contrasted to the NATO

C standard of no wind direction, no wind spee'd and standard Lemperatulre and pressure.

_______________________________________91_______13172______

20. DISTRIBUTION /AVAILABILITY OP ABSTRACT 2). A3STR,C3UNCLASSIIEDAINLIMITED 0 SAME AS EPT C3 I)TIr IIjFAS UNCLASSIFE)

22a. NAME OF RESPONSIBLE INDIVIDUAL 22b4 TR E3PON(InudeAreCee 221 OFFICE SYMBOLCPT Christine M. Johnson (405) 35~59 U I CSTE-TFS-T

OD Form 1473, JUN 86 Pre vious editi ons are obsoalete. SECURITY CLASSIFICATION OP THIS PAGE

DEPARTMENT OF THE ARMYT-rST AflOD I CPE--RL -ATATI;ON COUJ4M D

FIRE SUPPORT ST =ZD-CTORA7ZFORT SPL-. OKLAHOMA 73503-6100

R27L Y To

CSTZ-CSTE--S (70-1r) 24 September 1991

)OR!'DU FOR SEE DISTRIBUTION

SUBJECT: Letter Report, B .IATU G- Evaluation, BK 22-91, YeteorologicalSensor Package (SP)

1. REFERENCES:

a. Mmorandum, Assistant Commandant, U.S. Army Field Artillery School,ATIN2: ATSF-CPT, 16 April 1991, subject: Request BATTLEKING Assess theMeteorological Sensor Package (.HSP).

b. USAFACFS Regulation 11-5, Army Programs, BATTLEKING Program,29 March 1991.

c. FM 6-16-2, 15 January 1982, Tables for Artillery Meteorology (Visual)Ballistic Type 3 and Computer Messages and Limited Surface Observations.

2. PURPOSE: This evaluation will be used to determine if the MSP can be usedas a possible backup to electronically produced meteorological (met) data, andas a candidate for providing the required low-level wind data for the MultipleLaunch Rocket System (MRS).

3. BACKGROUND: The U.S. Army Training and Doctrine Command (TRADOC) SystemManager-Target Acquisition (TSM-TA) obtained the use of an MSP for thisevaluation. The Test and Experimentation Command Fire Support TestDirectorate (TEXCOM FSTD) was formally requested to conduct a custo.jer test(CT) of the MSP on 16 April 1991.

4. DESCRIPTION:

a. The MSP is a portable, stand-alone tripod or mast-mountable iit systemthat collects, processes, stores, and distributes met data. The meas rementof the met parameters uses sensors that have no moving parts .xcept tL! northseeker. The MSP features four major subsystems which can operate stp.atelyor as an integrated system: (1) the sensor assembly; (2) the data controlunit/communication buffer module and keyboard; (3) the mechanical supr.:thardware which includes the mast assembly (vehicular mounting), tripod(stand-alone), battery box, and antenna; (4) the ground base sensors whichinclude precipitation and soil temperature at three depths. See figure 1,page 2.

b. The MSP requires one operator. The MSP can operate on vehicle powJer(North Atlantic Treaty Organization (NATO) plug), batteries (BA5590s), andalternating current (AC) power (115/220 volts).

SI33JECT Letter Report, BATMMMJ Evaluation B 22-1 IYteorologicalSensor Package (S)-1

Figure 1. ?SP components.

I V IMP ON TRIPOD

Figure 2. MSP on tripod mount.

2

CSTE-TFS-T

SUBJECT: Letter Report, BA-31LEKI!lEvaluation, EK 22-91, MeteorologicalSensor Package (YSP)

c. The MSP, as configured for this evaluation, included the sensor

assembly, the data control unit/communication buffer module, the battery box,and the tripod. See figure 2, page 2.

d. rhe MSP produces a nine-line met message based on-operator input of-initialization data and the sensor readings. The sensor assembly computes thevertical profile of the winds, temperatures, and pressures by extrapolitionfrom surface measurements. The sensor assembly takes one sample per second.The operator can specify whether the MSP will take 1, 10, 30, or 60 samples tocompute the net message.

e. Two modes of operation are possible: the one-point and the

two-point. The one-point mode does not require data from an additionalsource. The two-point mode; however, requires wind speed and direction fromline 03 of a meteorological data system (MDS) computer met message.

5. EVALUATION OBJECTIVES: Determine if the MSP can provide the data for anine-line computer met message and provide low-level wind data for the MIRS.

6. ISSUES AND CRITERIA:

a. Issue. Can the MSP provide the required data to develop a nine-linecomputer met message and NATO supplementary surface weather report (SUPREP)for artillery limited surface observation (ALSO)?

Criterion. None.

b. Issue. Can the MSP provide a measure of the low-level winds required

by the MLRS?

Criterion. None.

NOTE: For the purpose of this evaluation, the Directorate of Combat

Developments (DCD), U.S. Army Field Artillery School, defined the low-levelwinds as those from the surface to 100 meters above the surface.

7. SCOPE AND TACTICAL CONTEXT:

a. Scope. The MSP was evaluated at Fort Sill, OK, 14-16 May 1991. The

TEXCX PSTD meteorological section performed all MSP operations. Datacollected was compared to computer met messages produced by an MDS A .

U113

b. Tactical Context. The evaluation was conducted in a nontactical DIC T benvironment • Inoviloud

STATEMENT A PER TELECON Ytrtt o,.___CPT. CHRISTINE JOHNSON TEXCOM

FIRE SUPPORT TEST DIRECTORATE .

ATTN: CSTE-TFS-T FT. SILL, OK Distribution/73503-6100 NWW 10/22/91 A -

Dist SpAcIal

CPSTE-TFS-TSU3BJECT: Letter Report, BATIL-MIX Evaluation, BRK 22-91, MeteorologicalSensor-Package (HSP)

& MHODOLOGY:

a. The two issues were evaluated concurrently.

b. Computer met message, DA Form 3677, and Limited Surface Observation,DA Form 5033-R, were used tocollect data.

c. Thirteeilet missions were flown. Radiosondes were usedt In missions1 and 4 while the pilot balloon (Pibal) method was used for the remaaming11- missions.

d. One computer met message using the 60-sample option and one using the1O-_iazple option were produced by the MSP for each of the 13 missions. Theone-point node was used for missions 1 -through 4 and the two-point mode wasused for missions 5 through 13. See table 1 below.

TABLE 1. DATA COLLECTION

MSP one-- 'mt

1iDS method MSP mode

Mission Radiosonde Pibal 60-sample 10-san pie

1 X -a .a2 -Xb x x3 - X XX4 X - Xx

NSP two-point

5 x -c.-.c

6 - X XX7 - X XX8 - X XX9 -x x x

10 - X XX11 -- x x x12 - X XX13 x X XX

aOperator failed to properly initialize the MSP.bT~iminated after line 05 due to cloud cover.cOerjtor failed to correctly input MDS line 03 data.

4

CSTE-TFS-TSUBJECT: Letter Report, BAI-L' tXZL Evaluation, BK 22-91, Yeteoro16gicalSensorPackage (MSP)

e. The MDS produced a nine-line computer met message for each of the,13 missions. Wind direction, wind speed, temperature, and pressure from theMDS computer met messages were used as a baseline. The corresponding fieldsfrom the nine-line MSP .generat!d omputer me' missage were compared to thebaseline. Additionally, MDS computed wind speed and direction (line 03) were,used as input to the MSP when it was operated using the two-point mode.

f. The crew prepared a NATO SUPREP for missions 1 through 5 IAWFM 6-16-2. The wind speed, wind direction, temperature, and pressure for theSUPREPs were taken from line 00 of the corresponding MSP computer met messages.

9. RESULTS.

a. Findings.

(1) Tables 2 through 5 show the~means, standard deviations, samplesizes, and medians of the differences for each of the four major variables:wind direction, ind speed, temperature, and pressure for lines 00 through 09

for each mission flown. There-were two instances of operator error whichcaused three MSP messages to be invalid. During mission 1, the operatorfailed to properly initialize the MSP for the 60-sample mode. During mission5, the operator failed to correctly input MDS line 03 data for the MSPtwo-point procedures. Mission 2 was terminated after line 05 when cloudsprevented tracking for lines 06, 07, 08, and 09.

TABLE 2. DIFFERENCE IN WIND DIRECTION IN MILS

Mission numbersResults I and 4a 2 and 3b 6 through 13c

Mean -20.67 305.25 -90.50Standard Deviation 351.78 428.60 278.36Sample Size 30.00 32.00 160.00Median -110.00 345.00 -100.00

aMissions using radiosondes, MSP one-point mode.bNSP one-point mode.cMSP two-point mode.

5

CSTE-TFS-TSUBJ ECT: Letter Report, BATILEKI$. Evaluation, BK 22-91, Meteorological

Sensor Package (MSP)

TABLE 3. DIFFERENCE IN WIND SPEED IN KNOTS

Mission numbers

Results 1 and 4a 2 and 3 b 6 through 1 3C

Mean -54.27 -45.34 0.48

Standard Deviation 31.76 21.87 12.79

Sample Size 30.00 32.00 160.00

Median -46.50 -43.50 0.00

amissions using radiosondes, KM? "one-point mode.

bMSP one-point mode.cmSp two-point mode.

TABLE 4. DIFFERENCE IN TEMPERATURE IN DEGREES KELVIN

Mission-numbers

Results 1 and 4a 2 and 3 b 6 through 13c

Mean -2.01 5.91 7.98

Standard Deviation 1.13 4.71 3.5.7

Sample Size 30.00 32.00 160.00

Median -1.50 6.70 9.70

aMissions using radiosondes, MS? one-point mode.

bMSP one-point mode.CMSP two-point mode.

TABLE 5. DIFFERENCE IN PRESSURE IN MILLIBARS

Mission numbers

Results 1 and 4a 2 and 3b 6 through 13c

Mean 0.17 44.84 47.08

Standard Deviation 0.58 31.96 26.17

Sample Size 30.00 32.00 160.00

Median 0.00 55.50 58.00

aMissions using radiosondes, MSP one-point mode.

bMSP one-point mode.

cMSP two-point mode.

6

SUBJECT: Letter Repdit, BATTLEK.UC Evaluation, Br 22-91, MeteorologicalSensor Package (MSP)

(2) Tables 6 and 7 show the mean difference -between the MDS and MSPline 01 data for wind direction and speed. Line 01 represents the averagefrom the surface- to 200 meters altitude.

TABLE 6. DIFFERENCE IN LINE 01 WIND DIRECTION IN MILS

Mission numbersResults -, 1 and 4a

2 and 3b 6 through 1 3 c

Mean -210.00 -45.00 361.25Standard Deviation 160;83 235.53 167.48Sample Size 3.00 4.00 16.00Median -150.00 -50.00 355.00

aMissions with radiosondes, MSP one-point mode.bMSP one-point mode.cMSp two-point mode.

TABLE 7. DIFFERENCE IN LINE 01 WIND SPEED IN KNOTS

Mission numbers

Results 1 afid 4a 2 and 3b 6 through 13c

Mean -37.00 -28.25 1.53Standard Deviation 9.00 4.97 14.44Sample Size 3.00 4.00 16.00Median -28.00 -28.50 -4.00

aMissions with radiosondes, MSP one-point mode.bMSP one-point mode.cMsp two-point mode.

b. Assessments. Sufficient data could not be obtained during the conductof this BATTLEWING evaluation to determine the suitability of the MSP toprovide data for a nine-line computer met message and NATO SUPREP due to thelimited number of missions with radiosondes. Although the suitability of theMSP as an alternative to the MDS system could not be thoroughly assessed, the

following observations are offered:

(1) The MSP is portable, lightweight, and operates with only oneoperator. Based on sensor obtained surface readings, it collects, processes,stores, and distributes met data.

7

CSTE-TFS-T

SUBJECT: Letter Report, BATTLEKIN Evaluation;, BK2241, MeteorologicalSensor Package (MSP)

(2) The MSP produced a nine-line met message -based on surfacreadings taken by the sensor assembly for wind direotion, wnd- speed,""temperature and pressure. Due to the limited numbett(two) of missioni using aradiosonde, means testing was not'done on the data oitained. However. greaterdifferences between MDS)and MSP data were obtained fur wind direction and windspeed than for temperature and pressure. This did:nor4Tbld "eue tod Ehevisual met missions wheregreater differences in. presifife wdfSo6;er;6d.

(3) The MSP does provide an approximation ofzthe '6LfenE'met effectsas contrasted to the NATO standard of no wind direcdioti, no ind spe6d, andstandard temperature and pressure.

c. Recommendation: The MSP's suitability for measdr-ing surfae& andlow-level wind conditions warrants further testing. .

10. SUGGESTED IMPROVEMENTS: None.

FOR THE DIRECTOR:

Encl

Test Data

DISTRIBUTION:

BATTLEKIND EXECUTIVE COMMITTEEASSISTANT COMMANDANT, U.S. ARMY FIELD ARTILLERY SCHOOL, ATTN:- ATSF-A,

FORT SILL, OK 73503-5600COMMANDER, III CORPS ARTILLERY, ATTN: AFVI;. FORT SILL, OK 73503-6000DIRECTOR, DIRECTORATE OF COMBAT DEVELOPMENTS, U.S. ARMY FItELD ARTILLERY

SCHOOL, ATTN: ATSF-CD, FORT SILL, OK 73503-5600 , .

COMMANDERU.S. ARMY TRAINING AND DOCTRINE COMMAND, ATTN: ATOS, FORT'MONRGE, VA

23651-5000HEADQUARTERS, TEST AND EXPERIMENTATION COMMAND, ATTN: MSTE-T hA,

FORT HOOD, TX 76544-5065

ASSISTANT COMMANDANTU.S. ARMY FIELD ARTILLERY SCHOOL, ATTN: ATSF-CPT, FORT SILL, OK 73503-5600U.S. ARMY FIELD ARTILLERY SCHOOL, ATTN: USMC-LNO, FORT SILL, OK '3503-5600

8

i CSTE-TFS-T

SUBJECT: Letter Report, BATTLRIN3 Evaluation, BK 22-91, Meteorological

Sesor Package (MSP)

DISTRIBUTION: (CONT)DIRECTOR

ATMOSPHERIC SCIENCES LABORATORY, ATTN: SLCAS-AS-I, WHITE SANDS MISSILE RANGE,N 88002-5501

TEXCOM FIRE SUPPORT TEST DIRECTORATE, ATTN: CSTE-TFS, FORT SILL, OKY3503-6100

DEFENSE DOCUMENTATION CENTER, CAMERON STATION, ATTN: DPC-TCA, ALEXANDRIA,VA 22314-5000

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