https://navisp.esa.int/opportunity?category=ittLatest invitations to tender from NAVISPThu, 21 May 2026 07:55:58 +0000https://navisp.esa.int/opportunity/details/157/showOptical laser communication links from satellite to ground are affected by atmospheric conditions. When penetrating through clouds, optical signals suffer from power degradation up to complete loss of the satellite-to-ground link. As a result, optical ground stations (OGS) as used in the OpSTAR activity are not able to establish optical links continuously but will instead have data gaps. The…Thu, 21 May 2026 07:55:58 +0000latest-ittsitt-157https://navisp.esa.int/opportunity/details/156/showEC Regulation 2021/664 defines a minimum set of requirements for the Unmanned Aircraft Systems (UAS) operations in certain geographical zones, which is called U-space. U-space defines new services relying on a high level of digitalisation and automation, designed to provide access to airspace for large numbers of unmanned aircraft. Emerging U‑space Beyond Visual Line of Sight (BVLOS)…Thu, 21 May 2026 07:55:49 +0000latest-ittsitt-156https://navisp.esa.int/opportunity/details/155/showGlobal dependence on GNSS for PNT has exposed threats from jamming, spoofing, interference, and space‑weather effects. These threats are now widely recognised by defence, maritime, aviation, and critical infrastructure stakeholders as a systemic risk to safety and national resilience.  In response, eLoran has re-emerged internationally as a terrestrial, high‑power, low‑frequency…Thu, 21 May 2026 07:53:37 +0000latest-ittsitt-155https://navisp.esa.int/opportunity/details/154/showAs for ground‑based high‑performance clocks, the exploitation of atomic optical transitions represents a promising approach to improving the accuracy and stability of very compact atomic clocks, down to 10 ns per day, with short‑ to medium‑term stability ten times better (or more) than existing products.  While the main bottleneck of this technology lies in the availability of compact…Thu, 21 May 2026 07:53:10 +0000latest-ittsitt-154https://navisp.esa.int/opportunity/details/153/showThe International Atomic Energy Agency (IAEA) safeguards system is designed to verify States’ legal undertakings to use nuclear material for exclusively peaceful purposes. States declare their nuclear material and activities to the IAEA, and the IAEA verifies the correctness and completeness of these declarations. This requires robust and resilient GNSS trackers which can withstand…Thu, 21 May 2026 07:52:47 +0000latest-ittsitt-153https://navisp.esa.int/opportunity/details/128/showThe application of machine learning (based on “black-box” modelling) is of interest in problems that are difficult to solve based on traditional (optimal) estimators for simple models (“white-box” modelling). Black-box modelling is difficult to be explained and understood (i.e., difficult to understand what to expect in unknown or new situations), involve high computation complexity, and…Thu, 15 Jan 2026 08:42:14 +0000latest-ittsitt-128https://navisp.esa.int/opportunity/details/132/showSafe Localisation of railway vehicles is necessary to allow train control systems to operate. Today this is done within the European Train Control System (ETCS) by using fixed location tags called Eurobalises and odometry sensors. While Eurobalises typically are safe, fairly accurate and robust, they impose high costs for installation and maintenance on the infrastructure operator and only…Thu, 15 Jan 2026 08:31:32 +0000latest-ittsitt-132https://navisp.esa.int/opportunity/details/145/showDrones, or Unmanned Aerial Vehicles (UAVs), have evolved from defence applications into versatile platforms used across industries. They can fly autonomously or via remote control and are equipped with sensors and payloads for tasks such as crop monitoring, infrastructure inspection, environmental surveillance, logistics, and emergency response. As drone technology advances, features like AI,…Thu, 15 Jan 2026 08:29:31 +0000latest-ittsitt-145https://navisp.esa.int/opportunity/details/146/showMagnetic crustal anomaly navigation is an alternative PNT technique which leverages the fact that the Earth’s crustal magnetic field exhibits spatial variations that can serve as a unique “fingerprint” for positioning. With sufficient sensitivity, these anomalies can be measured and matched to reference maps, enabling navigation in environments where other signals are unavailable or…Thu, 15 Jan 2026 08:29:07 +0000latest-ittsitt-146https://navisp.esa.int/opportunity/details/147/showLEO-PNT stands out among the very promising evolutions of spaceborne PNT systems towards Multi-Layer Satellite Systems (MLSS), leveraging differentiators such as:  Whitening of measurements, in particular multipath;  More diverse opportunities to exploit doppler measurements in addition to ranging;  Faster transition between LOS and NLOS status, beneficial to the awareness of the…Thu, 15 Jan 2026 08:28:35 +0000latest-ittsitt-147https://navisp.esa.int/opportunity/details/144/showGNSS-based systems are increasingly exposed to interference, RF jamming and spoofing. This is an unacceptable risk for safety‐critical operations. A laser-based positioning system can mitigate these threats through the inherent resilience and directionality of optical links. Narrow beams allow for selective PNT services and make interception or false-signal injection difficult. This results in a…Thu, 15 Jan 2026 08:27:57 +0000latest-ittsitt-144https://navisp.esa.int/opportunity/details/148/showThe current and future LEO satcom constellations operating in Ku and Ka bands are considering, along with the provision of the main communication services, also a native provision of positioning, navigation, and timing (PNT) services. Leveraging the existing satcom frequency bands and signals, the concept of such integration is referred to as Fused PNT, promising increased resilience and…Thu, 15 Jan 2026 08:27:31 +0000latest-ittsitt-148https://navisp.esa.int/opportunity/details/143/showSatellite navigation has widespread usage and very satisfactory performance for most of the professional and consumer applications. However, for certain uses, there is increasing awareness of satellite navigation weaknesses and limitations. In his keynote address at the IEEE/ION PLANS 2025 the “Father of GPS” Dr. Brad Parkinson, who proposed the “Protect, Toughen, Augment” (PTA) framework…Thu, 15 Jan 2026 08:27:06 +0000latest-ittsitt-143https://navisp.esa.int/opportunity/details/150/showAutonomous systems, whether operating on land, in the air, at sea, or in structured indoor environments, require robust, real-time state estimation to navigate complex, dynamic, and GNSS-challenged conditions. Traditional estimation techniques such as the Extended Kalman Filter (EKF) often rely on local linearization of the system dynamics and measurement models, which can result in degraded…Thu, 15 Jan 2026 08:26:31 +0000latest-ittsitt-150https://navisp.esa.int/opportunity/details/152/showThe global GNSS market is predicted to grow considerably in the next decade, with revenues coming from the sale of devices and even more services, and the wider PNT domain revenues are even bigger. Europe share in this market is around 23%, mostly in the professional markets, and it is not expected to increase. Except for few manufacturers located in Europe (e.g. uBlox and STM), the consumer…Thu, 15 Jan 2026 08:25:33 +0000latest-ittsitt-152https://navisp.esa.int/opportunity/details/142/showThe ability of exploiting the spatial dimensions has made array antennas valuable for many applications, e.g., multipath and interference mitigation, spatial diversity, and localization. Consequently, over the past years, array antennas, i.e. Controlled Receptions Pattern Antennas (CRPA), have been deployed with GNSS receivers either to provide a spatial filter (null steering techniques) or to…Thu, 15 Jan 2026 08:24:57 +0000latest-ittsitt-142https://navisp.esa.int/opportunity/details/141/showThe success of satellite-enabled PNT applications is accompanied by a growing dependency of our society and economy on the availability of GNSS, which has motivated R&D, demonstration as well as deployment of so-called Alternative PNT systems (APNT). This dependency extends to GNSS augmentation systems and PNT capabilities relying on local terrestrial infrastructures which can be exposed to…Thu, 15 Jan 2026 08:24:29 +0000latest-ittsitt-141https://navisp.esa.int/opportunity/details/151/showThe rationale and context for this study are similar to as “EL1-120: Resilient PNT Critical National Infrastructure validation test bench”. One of the considerations that can be derived by the analysis of the context is that the extent of the exposure of CNIs operators and suppliers to the risks posed by intentional and unintentional, natural and man-made RF interference threats is not very…Thu, 15 Jan 2026 08:23:54 +0000latest-ittsitt-151https://navisp.esa.int/opportunity/details/149/showGlobal Navigation Satellite Systems (GNSS) play a crucial role in providing accurate positioning, navigation, and timing information for a wide range of applications, ranging from daily mobile phone use to infrastructure and military activities. Nevertheless, GNSS receivers often require considerable computational resources to process the received GNSS signals, especially during the correlation…Thu, 15 Jan 2026 08:20:49 +0000latest-ittsitt-149https://navisp.esa.int/opportunity/details/140/showThe threats of ground-based interference, jamming, and spoofing impacting terrestrial and aviation receivers are well recognised by the navigation community, driving many system- level and user-level mitigation studies and technology developments. However, sufficient attention has not yet been given to the impact and mitigation of these threats on GNSS space receivers in LEO (commercial and…Thu, 15 Jan 2026 08:20:18 +0000latest-ittsitt-140https://navisp.esa.int/opportunity/details/139/showJamming and spoofing of GNSS are a major concern. A controlled reception pattern antenna (CRPA) is one of the most powerful technologies to mitigate jamming and spoofing. As a result, it is attractive to start using CRPAs for several applications, including aviation and high-accuracy services. However, the use of a specific CRPA for specific applications requires a detailed evaluation of the…Thu, 15 Jan 2026 08:19:35 +0000latest-ittsitt-139https://navisp.esa.int/opportunity/details/124/showWhen cosmic rays reach the upper part of the Earth’s atmosphere, several particles are created, including muons. Muons, elementary particles with the same charge of the electron but with bigger mass, can travel through any kind of material, including water and rock. A muon detector can be very small and very low cost (~ $100). Muons can be used for navigation using Reference Detectors (to…Mon, 21 Jul 2025 10:40:09 +0000latest-ittsitt-124https://navisp.esa.int/opportunity/details/126/showNavigation systems that rely on Inertial Sensors are prone to drift and inaccuracies over time, affecting their accuracy, reliability, and autonomy, particularly in challenging scenarios where GNSS signals and/or external reference points availability is limited or strongly impacted. Quantum accelerometers enable high-precision navigation with long autonomy, effective fault detection in case of…Wed, 02 Jul 2025 07:46:51 +0000latest-ittsitt-126https://navisp.esa.int/opportunity/details/102/showPulsar are rapidly rotating neutron stars emitting beams of radiation periodically, some with very high stability. Since every pulsar has a different frequency, they can be used in a navigation system like beacons, and in timing (see EL1-006). Emission occurs in all spectrum (infrared, visible, RF, X-ray). For space navigation, detectors in X-ray are preferred for their size, but detectors…Wed, 02 Jul 2025 07:45:29 +0000latest-ittsitt-102