Galileo-Based Doppler Shifts and Time Difference Carrier Phase: A Static Case Demonstration.

The European Commission is designing and implementing new regulations for vehicle navigation in different sectors. Commission Delegated Regulation 2017/79 defines the compatibility and performance of the 112-based eCall in-vehicle systems. The regulation has a large impact on road transportation because it requires that all cars and light duty vehicles must be equipped with eCall devices.

Application of "Galileo High Accuracy Service" on Single-Point Positioning.

Employment of precise positioning techniques will enable low-cost receivers for a variety of applications. The complexity of techniques such as Precise Point Positioning (PPP), or differential techniques that require the use of external sources of corrections, could be a disadvantage for users. On the other hand, a simple technique such as Single-Point Positioning (SPP) alone does not provide high-level accuracy.

Neustrelitz Total Electron Content Model for Galileo Performance: A Position Domain Analysis.

Ionospheric error is one of the largest errors affecting global navigation satellite system (GNSS) users in open-sky conditions. This error can be mitigated using different approaches including dual-frequency measurements and corrections from augmentation systems. Although the adoption of multi-frequency devices has increased in recent years, most GNSS devices are still single-frequency standalone receivers.

From damage control surgery to complex abdominal wall reconstruction It is possible even in the elderly in a Spoke Center?

Aim: To describe our Spoke Center experience in Damage Control Surgery (DCS) in a non traumatic patient and the possibility of delayed abdominal wall reconstruction (AWR). Material of Study The case of a 73 years old Caucasian male treated with DCS for a septic shock due to a duodenal perforation and his clinical course till the abdominal wall reconstruction.

Results: We made DCS with abbreviated laparotomy, suture of the ulcer and duodenostomy with a foley placed in right hypochondrium.

Time-Differenced Carrier Phase Technique for Precise Velocity Estimation on an Android Smartphone.

GNSS (Global Navigation Satellite System) receivers are not only able to accurately determine position, but also velocity, knowledge of which could be important in several applications. The most adopted technique for velocity estimation exploits the Doppler shift due to the relative motion between the signal source and the receiver. Alternatively, the TDCP (Time-Differenced Carrier Phase) technique, based on the differences between consecutive carrier-phase measurements, can be used.