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• Built-inGPSreceiverforposition andvelocitymeasurement TheNAV420providesconsistent performanceoverawidetemperature rangeinchallengingEMIenvironments acrossabroadrangeofinputpower conditions.Itisdesignedforuseina numberofdifferentapplications includingunmannedvehiclecontrol, landvehicleguidance,uncertified avionicsandplatformstabilization. • Real-TimeGPSX,Y,ZPosition andVelocityOutputs GPS-AIDED MEMS INERTIAL SYSTEM
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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
11 NC–Factoryuseonly
12 NC–Factoryuseonly
13 NC–Factoryuseonly
14 NC–Factoryuseonly
15 NC–Factoryuseonly
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.
