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NAV420 Block Diagram

GPS-AIDED MEMS INERTIAL SYSTEM

NAV420

• Real-TimeGPSX,Y,ZPosition andVelocityOutputs

• AHRSPitch,Roll,andHeading Outputat100Hz

• Built-InGPSReceiverwithRTCMandWAASCompatibility

• HighStabilityMEMSSensors

• EnhancedPerformanceKalmanFilterAlgorithm

• EMI&VibrationResistant

• EnvironmentallySealed

Applications

• UnmannedVehicleControl

• LandVehicleGuidance

• AvionicsSystems

• PlatformStabilization

NAV420CATheMEMSICNAV420isacombinedGPSNavigationandGPS-AidedAttitude&HeadingReferencesystem(AHRS)thatutilizesbothMEMS-basedinertialsensorsandGPStechnologytoprovideanunmatchedvalueintermsofbothpriceandperformance.Developedinresponsetoyearsofextensiveapplica-tionexperienceinawidevarietyofairborne,marineandlandapplications,theNAV420alsoincorporatesmanynewandenhanceddesignfeaturesincluding:

• Built-inGPSreceiverforposition

andvelocitymeasurement

• GPSdatasynchronizationclock

• HighperformanceKalmanFilter

algorithms

• Waterresistant,vibrationresistant,

light-weightdesign

• EMIprotectionfortrouble-free

operation

• ContinuousBuilt-in-Test

TheNAV420providesconsistent performanceoverawidetemperaturerangeinchallengingEMIenvironmentsacrossabroadrangeofinputpowerconditions.Itisdesignedforuseinanumberofdifferentapplications includingunmannedvehiclecontrol,landvehicleguidance,uncertified avionicsandplatformstabilization.

Thishighreliability,strapdowninertial systemprovidesattitudeandheadingmeasurementwithstaticanddynamicaccuraciesthatexceedtraditional spinningmassverticalanddirectionalgyros.WithGPSintegration,theNAV420systemalsoprovidesGPS-aidedvelocitydataatupto100Hz.Velocitydataderivedfromtheinertialinstrumentsimprovesstabilityandreducesthelatencyassociatedwithstand-aloneGPSmeasurements.

EachNAV420systemcomeswitha GPSantennaandUser’sManual.MEMSIC’sNAV-VIEWsoftwareisalsoincludedtoassistuserswithsystemdevelopment,evaluation,anddataacquisition.

PackageDimensions

M E M S I C I n c . S a n J o s e , C a l i f o r n i a w w w . m e m s i c . c o m 6 0 2 0 - 0 0 6 1 - 0 2 R e v A

Pin Signal1 RS-232TransmitData

2 RS-232ReceiveData

3 PositivePowerInput(+Vcc)

4 PowerGround

5 ChassisGround

6 NC–Factoryuseonly

7 RS-232GPSTx

8 RS-232GPSRx

9 SignalGround

10 1PPSOUT






1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

Specifications NAV420CA-100 RemarksPerformanceUpdateRate1(Hz) 2-100 Programmable

Start-upTimeValidData(sec) <1

FullyStabilizedData(sec) < 60 Understaticconditions

Position/VelocityPositionAccuracy2(mCEP) 3 InternalGPS,notaugmented

X,YVelocityAccuracy(m/srms) <0.4 GPSavailable

ZVelocityAccuracy(m/srms) <0.5 GPSavailable

1PPSAccuracy(ns) ± 50 GPSavailable

Attitude Range:Roll,Pitch(°) ±180,±90

Accuracy3(°rms) <0.75 GPSavailable

(°rms) <2.5 GPSunavailable

Resolution(°) <0.1

HeadingRange(°) ±180

Accuracy3(°rms) <3.0

Resolution(°) <0.1

Angular RateRange:Roll,Pitch,Yaw(°/sec) ± 200

Bias:Roll,Pitch,Yaw(°/sec) <±0.1 Kalmanfilterstabilized

Bias:Roll,Pitch,Yaw(°/sec) <±0.75 Kalmanfilteroff

ScaleFactorAccuracy(%) <1

Non-Linearity(%FS) <0.5

Resolution(°/sec) <0.06

Bandwidth(Hz) 25 -3dBpointnominal

RandomWalk(°/hr1/2) <4.5

AccelerationInputRange:X/Y/Z(g) ± 4

Bias:X/Y/Z(mg) <±15

ScaleFactorAccuracy(%) <1

Non-Linearity(%FS) <1

Resolution(mg) <0.6

Bandwidth(Hz) 25 -3dBpointnominal

RandomWalk(m/s/hr1/2) <1.0

EnvironmentOperatingTemperature(°C) -40to+71

Non-OperatingTemperature(°C) -55to+85

Non-OperatingVibration(grms) 6 20Hz-2KHzrandom

Non-OperatingShock(g) 200 1mshalfsinewave

Enclosure4 IP66compliant

ElectricalInputVoltage(VDC) 9to42

InputCurrent(mA) <350 at12VDCnominal

PowerConsumption(W) < 5

DigitalOutputFormat RS-232

Physical

Size(in) 3.0x3.75x3.0 includingmountingflanges

(cm) 7.62x9.53x7.62 includingmountingflanges

Weight(lbs) <1.3

(kg) <0.58

Connector 15pin“D”male

GPSAntennaConnector SMAJack

SpecificationssubjecttochangewithoutnoticeNotes: 1SeeUser’sManualforadditionalinformation2 InternalGPSaccuracycanbefurtherimprovedwithRadioTechnicalCommissionforMaritime(RTCM)orSatelliteBasedAugmentationSystem(SBAS)messagessuchastheWideAreaAugmentationSystem(WAAS).3Dynamicconditions,aggressiveMEMSICflightprofile.4 IP66CompliantwithoutEMIfilterattached.

CALL FACTORY FOR OTHER CONFIGURATIONS

Model Description Gyro (°/sec) Accel (g)

NAV420CA-100 GPS-AidedMEMSInertialSystem ± 200 ± 4

Ordering Information

NAV420PinDiagram

This product has been developed exclusively for commercial applications. It has not been tested for, and makes no representation or warranty as to conformance with, any military specifications or its suitability for any military application or end-use. Additionally, any use of this product for nuclear, chemical or biological weapons, or weapons research, or for any use in missiles, rockets, and/or UAV’s of 300km or greater range, or any other activity prohibited by the Export Administration Regulations, is expressly prohibited without the written consent and without obtaining appropriate US export license(s) when required by US law. Diversion contrary to U.S. law is prohibited. Specifications are subject to change without notice.