New in SC Modeler 4.0

1. The Constellation Editor functionality and interface improvements, including the ability to use it jointly with the Constellation Design modules, i.e., to add constellations generated by these modules to a user-defined constellation or constellation defined by TLE records.

2. The SGP4/SDP4 orbit propagator. During simulation, the constellation view and all graphs and analysis results produced by the base module, the Network Topology tools, and the Network Traffic Analysis Module reflect changes caused by the orbital decay of satellites.

3. The Conjunction Visualization mode provides visualization of conjunction events identified by the Conjunction Forecast Web Service or any other product capable of producing an evaluation set of conjunction data. During the conjunction event simulation, the viewpoint remains directly above the primary conjunction object, and the image's scale changes continuously depending on the relative position of conjunction objects. You can review the intersection of error ellipsoids of conjunction objects and monitor the RIC (radial, in-track, cross-track) distances during close fly-by.

4. Improved support for importing large TLE files.

5. The "Maximum Number of Hops across the Satellite" constraint is enabled for all chain configurations. Intersatellite links can be completely disabled.

6. The Modeling Interval window functionality improvements.

7. The Real Time Mode stability improvement for a small time step.

8. New format of constellation analysis report files.

9. The Orbital Elements, Position, and Velocity report can be generated anytime during simulations for the Two-Body Keplerian, J2 Perturbations, and SGP4/SDP4 orbit propagators.

Conjunction Visualization

Importing TLE

New in SC Modeler 3.5 :
1. The Advanced Routing Module (v.3.5.4).
2. The Equivalent Power Flux Density (EPFD) Analysis option.
3. As part of the EPFD Analysis option, the Periodic Coverage Analysis module provides simultaneous EPFD Down analysis of multiple "GSO ground station - GSO satellite" couples.
EPFD Down Report
New in SC Modeler 3.4 :
1. The Network Topology Tool provides a choice of four routing policies (v.3.4.2):
- routing policy that minimizes the number of hops across the satellite (this algorithm is part of the base configuration of SC Modeler);
- routing policy that minimizes the number of hops (first) and the total length of the path from the source node to the destination node (second);
- routing policy that minimizes the total length of the path from the source node to the destination node;
- routing policy that minimizes the packet delay, which includes the propagation delays and the processing delay at a satellite node (user-specified value) multiplied by the number of hops across the satellite.
2. The Periodic Coverage Analysis module allows adding the coverage grid points to the ground stations' list to be used for connectivity and delays analysis by the Network Topology Tool (v.3.4.3).
For any couple of network nodes, the Network Topology Tool displays the number of hops across the satellite, the total length of the path, and the end-to-end packet delay (tested on a network with 100+ satellites and 3,000+ ground stations).
The Network Topology Tool can also interactively display the best path (in accordance with the selected routing policy) for any couple of network nodes.
3. The Network Traffic Analysis Module (v.3.4.4).
New in SC Modeler 3.3 :
1. The Periodic Coverage Analysis module allows creating of a log file in TSV format, containing values of selected access constraints for all access events: "time-gridpoint-satellite-{ground elevation angle, satellite sensor's field of view (horizontal and vertical half-angle for a rectangular sensor), range, range rate, satellite-based azimuth and elevation, azimuth rate, elevation rate, angular rate}".
2. The Constellation Deployment module (v.3.3.2).
New in SC Modeler 3.2 :
1. The Interference Analysis of GSO and non-GSO satellites option.
2. The Continuous Coverage Constellation Design/Advanced Options Plus module.
New in SC Modeler 3.1 :
1. The program allows calculating dilution of precision (DOP) values for a ground-based and satellite-based GPS receiver:
- geometric dilution of precision (GDOP),
- position dilution of precision (PDOP),
- vertical dilution of precision (VDOP),
- horizontal dilution of precision (HDOP),
- time dilution of precision (TDOP).
2. Improved support for multiple displays.
3. "Save Image" functionality improvements and fixes.
4. Improved support and fixes for non-US regional settings (using the comma as a decimal mark).
5. Numerous user interface improvements.