Chris

Results 146 issues of Chris

# High level description Nyx uses the hyperdual representation of an orbit to compute the partial derivatives of orbital elements with respect to the Cartesian elements. At the moment, the...

T-mission-design

For this task, the idea is to demonstrate that Nyx supports high fidelity estimation of lunar orbits. Idea: grab one of the definitive ephemeris files from NASA PDS for LRO,...

Kind: Improvement
Topic: Mission Design
Priority: high

# High level description Ground stations have biases, which are currently modeled as [first order Gauss Markov](https://rustdoc.nyxspace.com/nyx_space/od/noise/gauss_markov/struct.GaussMarkov.html) processes. With a reasonably high bias, the OD results are quite noisy because...

T-orbit-determination
P-high
Premium

# High level description Kedro has a [data catalog](https://docs.kedro.org/en/stable/data/data_catalog.html) concept, which is absolutely fantastic to use. In a way, this is what the `ExportCfg` does but only for _saving_ data,...

i-rust

# High level description The first part of this work will include creating, refactoring, and re-enabling the Python interface in Nyx, which was removed in #305 for the sake of...

i-python
P-high

# High level description At the moment, OD only support range and Doppler measurement, simultaneous or not. In practice, especially in LEOP, we may want to use azimuth and elevation...

Status: Design
Topic: Orbit Determination
Priority: normal

# High level description Issue #326 will support estimation of the ground station biases. Although important, it's possible that one may increase the measurement noise quite high in order to...

T-orbit-determination
Premium

# High level description There are currently some low fidelity drag models. In the past few years, these drag models have greatly improved. This ticket should support one of the...

T-mission-design
Premium

# High level description Large spacecraft may be affected by albedo modeling. This is not currently supported in Nyx, but it should be and it's pretty straightforward. Migrated from https://gitlab.com/nyx-space/nyx/-/issues/201...

T-mission-design
P-low
Premium

# High level description Nyx can compute the [eclipsing (with penumbra)](https://rustdoc.nyxspace.com/nyx_space/cosmic/eclipse/fn.eclipse_state.html) and the [line-of-sight visibility](https://rustdoc.nyxspace.com/nyx_space/cosmic/eclipse/fn.line_of_sight.html). This [algorithm is derived in the MathSpec](https://nyxspace.com/nyxspace/MathSpec/celestial/eclipse/) and its implementation is verified in the ["GEO...

Kind: new feature