The Software Defined Radio (SDR) platform continues to shape the Global Navigation Satellite System (GNSS) testing and development environment. Open source SDR platforms are now being developed and offer GNSS development capability to a variety of users that have not previously had sufficient resources to be engaged. An open source platform also offers many advantages in terms of customization ...

NS2 is a discrete event simulator targeted at networking research. NS2 provides substantial support for simulation of routing protocols over wired and wireless (local and satellite) networks. NS2 uses TCL script for its front end and C++ as its back end [1,5]. NS2 is completely command based and one needs to create a TCL file for running any network simulation. Therefore, it’s very tedious for ...

A new simulator tool is described that can be used in the field of RF photonics. It has been developed on the basis of a broadband, continuously tunable optical beamformer system for phased array receive antennas. The application that is considered in this paper is airborne satellite reception of digital television. The simulator tool has been developed in LabVIEW. The simulation model comprise...

In order to study forests at the global scale, a detailed link budget for a lidar system onboard satellite is presented. It is based on an original approach coupling airborne lidar observations and an end-to-end simulator. The simulator is initialized by airborne lidar measurements performed over temperate and tropical forests on the French territory, representing a wide range of forests ecosys...

Accurate modeling of Space Surveillance sensors is necessary for a variety of applications. Accurate models can be used to perform trade studies on sensor designs, locations, and scheduling. In addition, they can be used to predict system-level performance of the Space Surveillance Network to a collision or satellite break-up event. A high fidelity physics-based radar simulator has been develop...

In interferometric synthetic aperture radar (InSAR) processing, simulation of interferogram is a common practice. It is used as synthetic data to test and validate the whole chain of InSAR processing from the interferogram creation to the DEM reconstruction. The objective of this paper is to develop a simulator for validation of geocoding processing and phase-to-height conversion processing alg...

NAVSYS has developed an Advanced GPS Hybrid Simulator (AGHS) architecture to address next generation GPS testing issues for the civilian and military markets. The AGHS is a hybrid software, digital and radio frequency (RF) GPS simulator design. In addition to providing digital and RF signal simulation capability, the AGHS can also be used to record and play-back realworld GPS signals from field...

This paper presents the simulation results of a satellite network based in the Digital Video Broadcast Standard for the outbound channel DVB-S and the return channel DVB-RCS for interactive satellite terminals called RCST. The network model was built under the Network Simulator NS and the main objective was to study the return channel DVB-RCS resource request mechanism and adaptation layer for ...