Most precise and robust inertial Solution used in Defence Applications

The family of iPRENA and iPRENA-M are most robust solutions for inertial positioning, navigation, timing (PNT), weapon alignment, vehicle guidance and control. iPRENA-M includes additionally the hardening against gun-fire shocks. iPRENA as well as iPRENA-M ares available in four classes of performance (-II, -IIIA, -III, -IV),  details can be seen in the datasheet. 

iPRENA-M-II/-IIIA/-III/-IV and iPRENA-II/-IIIA/-III/-IV come with most accurate and most reliable ring laser gyroscopes (RLG), they have demonstrated more than 120'000 hrs field proven MTBF, also in safety critical applications. 

iPRENA as well as iPRENA-M come with an integrated GNSS receiver (up to RTK and PPP available) and support also external military GNSS receivers. Also other external aiding sensors like vehicle motion sensors (VMS) are supported.

iPRENA is based on iMAR's proven iNAT architecture and provides the required growth potential for the today's and future's applications in PNT and alignment tasks.

iPRENA is a leading solution also for GNSS denied applications. While the usage of an VMS (vehicle motion sensor / wheel sensor) is commonly used on defence vehicles, iMAR's specific algorithms allow to meet  a comparable position accuracy even without a connected VMS (example: test drives on a military truck  with iPRENA-RQT-4001 over 100 km during 1 hour without any GNSS and without any VMS lead  to a position error of less than 20 m [<< 0.1 %]).

iPRENA is the solution for

• localization
• navigation
• gun, mortar, antenna and EOIR sensor alignment and pointing

where reliability, accuracy and availability counts. 

Features

• Supported operational modes:
  • GNSS aided localization (for ground / land, airborne, naval vehicles) 
  • GNSS + VMS aided localization (for all ground / land vehicles)
  • pure inertial localization for ground vehicles (without GNSS, without VMS) in GNSS denied environment, urban canyons etc. with unmatched accuracy (< 0.1 % distance travelled horizontal accuracy [CEP50] and 0.05 % distance travelled vertical accuracy [PE50])
  • free inertial Navigation for arbitrary vehicles (air,, sea, subsea) with < 0.5 nm/hr position accuracy
  • AHRS mode for airborne applications (with and without true airseed, barometric altitude, magnetometer)

• integrated all-frequencies / all-constellations GNSS receiver
• designed to work also in GNSS denied environment, under spoofing and jamming conditions
• Real-time data output: longitude, latitude, alttude / height, velocty, roll, pitch, yaw / heading, angular rates, acceleration, status, calibrated raw data INS/GNSS (e.g. for post-processing)
• Interfaces: RS422 (UART) Interfaces, CAN, ARINC429, Ethernet (TCP/IP and UDP), SYNC-I/Os
• Data Output rate up to 400 Hz (each data log separately configurable)
• Measurement range +/-400 deg/s, +/-40 g
• Heading accuracy up to 0.26 mil sec lat
  Attitude accuracy < 0.2 mil
  Position accuracy pure inertial: < 10 m or < 0.1 % DT CP50 horizontal, < 0.05 % DT PE50 vertical (ground vehicles, no VMS, no GNSS)
  Position accuracy free inertial 0.5 nm/hr
  Position accuracy GNSS aided < 1 m (rms) [S/A off]
  Position accuracy GNSS aided 0.02 m (rms) [RTK available]
  
  
• Integrated 42+ state sensor data fusion with advanced algorithm for excellent motion detection, automatic ZUPT control etc.  iPRENA does not contain any AI based algorithms and hence fulfulls the armed forces requirements of deterministic behavior - whatever is the environment and operational scenario.
  
  
• Internally up to 128 GByte non-volatile memory for data storage
• Power Supply: 10...32 V DC, < 25 W
• EMI-EMC protection and qualification according to DO160G / MIL-STD-704F / MIL-STD-461G / MIL-STD-810G; designed to partially meet DO160G 
• iPRENA is in operation on wellknown weapon systems. Ask iMAR for a reference list.
• Due to its state-of-the-art and proven RLG technology, iPRENA is not suffering on performance degradation, which can be observed on solutions with other sensor technologies (FOG [fiber optical gyros], HRG [hemispherical resonator gyros] etc.) e.g. under well-known environmental impacts (vibration, temperature gradients, aging, ...) or under low dynamics scenarios. Do not hasitate to contact iMAR sales and support team for details, if required.
• iPRENA can be configuered by the operator. No factory setup required if the configuration shall be adapted to several user applications. This eases the stock handling dramatically compared to the solutions of competiting vendors.
• The proven ring laser gyro technology does not suffer from known lacks of fiber optic gyros (FOG) or vibrationg gyros (HRG, MEMS).  
• iPRENA-M fits mechanically to the obsolescent Honeywell^TM / Kearfott^TM MAPS / DRU.
• iPRENA is used by the German Armed Forces and other Armed Forces (e.g. via OCCAR).  
• iPRENA provides high performance pointing accuracy on high motion dynamics as well as on stabilized weapons or antennas. The low data latency is best of class.
• iPRENA is not covered by ITAR. iPRENA-IIIA, -III and -IV are only covered by dual-use export control. 

Note:

In compliance with our proven design philosophy and our technical code of conduct for development, production, and quality assurance of our products and solutions, only physics determines the behavior of iMAR’s measurement systems. The real-time output of our systems and solutions in the inertial signal path is achieved through the intelligent signal processing developed by our experienced engineers – not by artificial intelligence (AI).

Why?

We cannot recommend that integrators or users entrust the success of critical or general missions in inertial navigation, stabilization or control to the heuristic decisions of AI.

Rely on the high reliability, accuracy, and availability of iMAR solutions, as well as on the leading INS/GNSS/+ expertise and experience of our engineering team in Germany. This is based on our mathematically and physically precise algorithms, traceable results, our sensor, hardware, and algorithm design, and our production facilities, which are certified to military and aviation standards.

Note: We apply AI methods in signal processing where they provide benefits for the application (e.g., for improving image or scenario analysis). However, our highest priority is mission safety – even in so-called corner cases of applications, where AI is typically not sufficiently trained.

Several classes of iPRENA are available (here sorted by increasing accuracy):