SSA ComSpOC conjunction analysis maneuver detection orbit estimation catalog HiDEph space events measurements commercial

Astrogator Apollo Ranger Surveyor trajectory design artificial intelligence fuel use transfer maneuver design

LEO gasdynamic drag effects force atmospheric

classical filters CA collisions all on all ephemerides TLE two line element COSMOS Iridium Hoots Healey SGP4

AAS 07-358 navigation services GPS on-board OD ODTK orbit determination POE precision orbit ephemerides

AIAA 2004-5217 collision probability covariance ellipsoid

CAT close approach conjunction propagation velocity covariance voxel grid Mahalanobis ellipsoid

web services SOA all on all satellite conjunctions CAT collisions debris

ODTk orbit determination radar optical measurements bias precision orbit ephemerides POE POEs TLE SSA GPS

AAS 05-199 space catalog TLE ephemerides flight dynamics propagation

Chinese ASAT 20017 debris space surveilleance offensive counterspace TLE norad direct ascent

close approach conjunction analysis space debris CAT STK

space debris SSN anti-satellite asat sensors OD orbit determination

optimal estimate Gauss-Newton estimation sequence quaternion estimator magnetometer sun sensor

Defensive counter-space missile kinetic satellite interceptor

integration atmospheric behavior predictions solar flux geomagnetic drag Schatten radio stochastic

A recently-developed optimal feedback synthesis method based on Gaussian Process Regression (GPR) is applied to soft lunar landing guidance.

collision commercial off the shelf Iridium Cosmos mult-core processor

Satellite Tool Kit STK GPS PPS precise positioning service FAA interfrence visualization

nonlinearity kinematics polynomial trajectories optimization spinners maneuver design

AAS 11-134 three parameter attitude azimuthal unit sphere kinematics Rodrigues control law quaternion

AMOS space catalog surveillance SSN orbit determination sensors optical hosted payloads

CAT conjunction collision non-linear relative motion linear maximum probability dilution region covariance

lunar astrogator orbital design deep space

slew attitude angular velocity high accuracy star trackers attitude control LaGrange interpolation

single axis dual axes covariance matlab collision avoid conjunction

maritime domain awareness aircraft visualization

AAS 11-480 Astrogator maneuver planning trajectory design orbit transfers interplanetary trajectories root-finding algorithms

directed energy air space platforms laser propagation environment obstructions atmosphere space loss interference

spacecraft orbit uncertainty space operations ssa space situational awareness measurements coordinates covariance linearity

JPL DE 405 spice files numerical integration

scheduling sensor planning XML OGC

covariance comparison against real-time data estimation prediction error conjunction Kolmogorov-Smirnov

rapid response responsive space SSA AIAA

spectrum management GPS interference jamming

AAS 11-464 linearized equations force models equi-distant cyclindrical frame Hills solution

asteroid NEAR rendezvous maneuver STK triaxial ellipsoid

STK Scheduler Optwise priority resources coverage optimization

ellipsoidal threat volumes conjunction fixed time-varying

collision orbital planes CERISE filters apogee inclination

constellations LEO blackout intervals filters exclusion zone collision Hoots

maneuver detection events low-pass filters calibration NCT non-cooperative tracking radar optical

AAS 13-825 linear estimation techniques orbit error covariance state filtering equinoctial cartesian

collision probability non-zero cross correlation filter orbti determination ellipsoid

trajectories force modeling equations of motion HEO LEO orbit

CA conjunction analysis orbit catalog interpolation estimation

AAS 14-228 hybrid techniques corrective step methods non-iterative Euler rotation angles GEO astrodynamics convergence

Enterprise data management Richard Page

ephemerides ssa threat detection preceision interpolation

maneuver reconstruction calibration sequential filter fixed interval smoother

GEO space-based sensors SBSSorbit determination IOD STK

AAS 12-248 probability gaussian frigm rohrbaugh relative long term short term TCA

C4ISR visualization decision support mult-domain situational awareness

IED detection defense Insite rapid propagation urban environment radio

Optwise STK Scheduler scheduling tasks resources profiles heuristics

L2 libration Sun Earth formation flying space surveillance impulsive finite low-thrust

AAS 13-524 ITU UTC leap second time scale

control laws rigid body kinematics passive non-linear systems

AAS 11-416 TLE debris ring shells spherical zone orbital elements spatial density non-cooperative tracking

estimation ODTK orbti determination optimal atmospheric density jacchia 1970 uncertainty modeling

estimation observations residuals

SDC catalog measurements SOCRATES SDA CA conjunction

standards high precision timing accuracy celestial pole precession-nutation barycentric reference J2000 mean equinox

Chinese ASAT 2007 USA 193 intercept orbit debris threat coliisions

This report investigates the use of linear programming to optimise the performance of constellations of small satellites when the constellation design for a particular mission is known.

AAS12-247 position uncertainty monte carlo

cubesat rax modeling INCOSE sysml

sensors surveillance payloads operations coverage real-time dta

AAS 08-235 Earth-Moon Jovian point masses gravitational fields gravity integrated trajectory high-fidelity orbit propagation force modeling interplanetary missions

high fidelity orbit propagation HPOP CA conjunction analysis debris modeling reentry

fast-running algorithm refined orbit determination least squares estimates

real-time telemetry data visualization launch

GPS dilution of precision navigation error prediction GNSS signal-in-space range atmospheric error

attitude error trajectories attitude dynamics stabilization tracking control

numerical integration encke type correction orbit trajectory orbit perturbations

Cubesat MBSE SysML small spacecraft

AMOS 2014 RSO SSA space-based optica performancel radar passive RF sensors orbit determination scheduling

attitude dependent forces faster propagation Encke multiple model propagation adaptive estimation numerical integration orbit

VLS multi-dimensional estimation problems filter smoother ODTK orbit determination

conjunction screening collision geometric pre-filters time filter

Galileo clock state predictions navigation accuracy dilution of precision

UAV network modeling OPNET STK interoperability packet switching data routing protocols

undifference GPS carrier-phase pseudo range measurements UTC near real time

ANIK low thrust fuel efficiency sequential filter long duration

lunar orbits deep space optimal sequential filter moon prospector

optical measurements tracking data orbit determination ODTK SDA SOCRATES geosynchronous

IOD initial Least squares batch filter sequential processing smoother kalman optimal

ODTK Orbit Determination sequential kalman filter smoother weighted least squares estimator

orbit determination ODTK Kalman sequential filter measurement biases smoother

optimal OD orbit determination covariance matric error graity modeling estimation filter sequential filter-smoother low altitude orbits

visualization orbital debris modeling collision conjunction analysis breakup modeling pixel graphics

TLE RSO orbit inclinations mean element state vectors general perturbations orbit operations SSA EGP enhanced HPOP force model

Slewing multiple targets optimizing angular acceleration torque attitude modeling spacecraft design quaternion

position covariance orbit estimation TLE SGP4 3D visualization estimation

maneuvers measurement types uncertainties post-maneuver solution orbit determination

nutation celestial reference frame numerical standards

standards conjunction probabilities orbit lifetimes launch collision astrodynamics analysis practices

proximity operations SSA closed-loop maneuvers fuzzy logic simulation offensive space counterspace

kalman sequential orbit determination quantile residuals

global atmospheric Density doppler real-time range LEO ODTK orbit determination

COTS open source freeware custom development COCOMO reuse maintenance licenses

ballistic coefficient sequential estimation filter-smoother osculating polynomial splines LEO orbit determination ODTK discontinuity

Orbital debris conjunction analysis covariance probability

SGP general perturbations spacetrack space operations TLE

covariance conjunction analysis sequential filter real-time tracking smoother gravity modeling bias

SOCRATES conjunction analysis TLE automated VNC error

scalability parallel extension trajectory orbit design

L1 L2 libration deep space Astrogator

AAS 11-123 density batch least squares sparse tracking

propagation TLE orbit determination differential correction covariance

AAS 11-580 observations sensors SSN observations radar optical phased array

Attitude maneuver spin stabilized precession active nutation control

Atmospheric drag gravity modeling LEO filter smoother

Astrogator Swngby Navigator maneuver planning trajectory design libration point L1 L2

The ability to detect sudden and unexpected changes in the ephemerides of tracked space objects is a crucial feature of space event monitoring systems.

space standards orbital debris working group

conjunction analysis collision Iridium Cosmos breakup analysis

Spin-axis estimation sensors cost function lagrange multiplier method brute force incremental-vector incremental-angle

dynamic retasking orbit determination scheduling parametric analysis

GPS navigation error accuracy

Mars L1 L2 libration point Astrogator

space catalog ssa covariance conjunction orbit determination

Attitude nutation control axisymmetric spinners

OD ODTK maneuvers optimal sequential filter anomaly smoother

GEO ground-based tracking host orbits hosted sensors SSA space-based data AMOS

Analyzer parametric analysis data explorer gradient-based optimizer adaptive surrogate optimizer darwin genetic optimizer

AAS 13-486 Earth rotation civil timekeeping newcomb mean solar time UTC

Commercial imaging, remote sensing

EOP space weather American Astronautical Society AAS

GPS precision SGP4 AAS American Astronautical Society Space Flight Mechanics Conference AIAA

AAS 11-439 SSA RFI interference conjunction analysis CA radio frequency space data association SDA owner operator

3D education attitude visualization astrodynamics orbits