/**
 * @author @thkruz Theodore Kruczek
 * @license AGPL-3.0-or-later
 * @copyright (c) 2025 Kruczek Labs LLC
 *
 * Orbital Object ToolKit is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * Orbital Object ToolKit is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License along with
 * Orbital Object ToolKit. If not, see <http://www.gnu.org/licenses/>.
 */
import { Radians, Kilometers, Vector3D, RadiansPerSecond, KilometersPerSecond, Matrix } from '../main.js';
export declare const radecToPosition: (ra: Radians, dec: Radians, r: Kilometers) => Vector3D<Kilometers>;
export declare const radecToVelocity: (ra: Radians, dec: Radians, r: Kilometers, raDot: RadiansPerSecond, decDot: RadiansPerSecond, rDot: KilometersPerSecond) => Vector3D<KilometersPerSecond>;
export declare const normalizeAngle: (a: number, b: number) => number;
export declare const observationDerivative: (xh: number, xl: number, step: number, isAngle?: boolean) => number;
export declare const observationNoiseFromSigmas: (sigmas: number[]) => Matrix;