ANS-511 Airborne Inertial Navigation System

​ANS-511 is a navigation grade airborne inertial navigation system with embedded SAASM GPS receiver which is intended for application to military air vehicles.

ANS-511 has an open architecture and flexible hardware/ software which can be adapted to various air platforms including rotary-wing, fixed-wing and unmanned aerial vehicles.

ANS-511 provides linear acceleration, linear and angular velocity, position, attitude and heading to the host vehicle systems continuously. ANS-511 provides hybrid (inertial + GPS) navigation solution, inertial only navigation solution and GPS only navigation solution simultaneously. ANS- 511 is also capable of using external pressure altitude data to complement hybrid and inertial only navigation solutions.

ANS-511 is designed specifically for airborne applications and it is a DO-178B and DO-254 certifiable system.

Important Features

System Interfaces

  • MIL-STD-704A-F and DO-160G Compliant 28VDC Power Interface
  • 2 x MIL-STD–1553B Interfaces, dual redundant
  • ARINC 429 Interfaces, 8 output, 4 input
  • 3 x RS422 and 1 x RS232 Asynchronous Serial Interfaces
  • Have Quick and 1PPS Interface
  • KYK–13 Interface
  • Active and Passive RF Antenna Interface
  • CRPA Type Antenna Interface
  • Discrete Interfaces

System Operational Modes

  • Leveling
  • Alignment
    • In Flight Alignment (IFA)
    • Gyro Compass (GC) Alignment
    • Stored Heading Alignment
  • Directional Gyro / Attitude
  • Navigation
  • Initiated Built In Test (IBIT)
  • Platform Adaptation (ORIENT)

System Functions

  • Hybrid, Free Inertial, GPS Only Navigation Solutions
  • Magnetic Variation, Wind Speed and Direction Calculation
  • Motion Detection Function
  • Zero Velocity Update, Position Update
  • Configurable Flight Control Filters
  • Alignment Progress Status
  • GPS Lever Arm, Reference Point Lever Arm Correction
  • Start-Up BIT, Periodic BIT, Commanded BIT

Navigation Performance

 Free InertialHybrid (INS+GPS)
                Horizontal0.8 nm/hr CEP10 m (CEP)
                Altitude< 45 m(1)16 (PE)
                North, East0.8 m/s (rms)0.03 m/s  (rms)
                Vertical0.6 m/s (rms)0.03 m/s  (rms)
Roll, Pitch0.05 deg (rms)0.02 deg (rms)
Azimuth0.07 deg(2) (rms)0.02 deg(3)  (rms)
  1. 1. With Baro Aiding. %1.5 (rms) for Altitude>3 km.
  2. 2. With 4 minute ground alignment at 45 degree Latitude.
  3. 3. With sufficient aircraft maneuvers.

Alignment Durations

Ground Alignment ModeGPS In-Flight Alignment ModeStored Heading Mode
4.0 min10.0 min30 sec

Environmental Conditions

  • MIL-STD-810G / DO-160G Compliant

Electromagnetic Conditions

  • MIL-STD-461E / DO-160G Compliant

Physical Specifications

  • Dimensions: 28 cm (H) x 20 cm (D) x 17 cm (W) (including connector)
  • 7.5 kg with GPS receiver installed