080 - Miniaturised GNSS/LowRF receiver

080 - Miniaturised GNSS/LowRF receiver


GNSSs are typically operating from MEO, using spread spectrum techniques and having a large coverage by each satellite, therefore the user receiver signal power received on ground is extremely low, ‘buried’ under the thermal noise level.

Because of that, the GNSSs susceptibility to RFI interference, both generated locally with inexpensive means like Personal Privacy Devices or more regionally with state-level RF counter-measures, is relatively high.

In this context, the complementary usage of Low Frequency navigation systems, with a completely different system design, performance and weakness, helps reducing the current societal dependability on GNSSs.

Enhanced-LORAN (eLoRAN) is the latest of the low-frequency LOng-Range Navigation (LORAN) hyperbolic systems, and provides a PNT service for use by all modes of transport (land, maritime and aeronautic). 

New eLoran infrastructure is being installed in a number of regions around the globe and there is renewed activity and interest in Europe.

Objective: Enhance geo‐security and precision timekeeping with e-LORAN, through its jam‐ and spoof‐resistant signal characteristics of high transmit power and low carrier frequency. 

Description of innovation/Tasks: 

  • NAVISP-EL1-065 will develop a prototype eLoran miniaturised antenna for handheld applications; to complement and enhance this upcoming EL1 activity, it will be valuable to have a professional market, handheld, prototype miniaturised integrated GNSS and eLoran receiver.   
  • Taking stock of other activities on combining Medium Frequency DGNSS, AIS, and eLoran, design, develop and verify a prototype miniaturised integrated GNSS and eLoran receiver to investigate feasibility of a complete professional handheld low size, weight and power (SWAP) GNSS/eLoran terminal. 

Expected output: 

“Proof-of-concept” prototype miniaturised integrated GNSS and eLoran receiver with associated documentation.