import { TalkerSentence } from "../../types/sentences/TalkerSentence";
import { RawNmeaSentence } from "../../types/sentences/RawNmeaSentence";
import { BroadPositionMode } from "./common";
export declare class VTG extends TalkerSentence {
    static readonly ID: string;
    constructor(data: RawNmeaSentence);
    get trackingAngle(): number;
    get magneticTrackingAngle(): number;
    get speed(): number;
    get speedKmh(): number;
    get posMode(): null | BroadPositionMode;
    get valid(): boolean;
    get invalidReason(): null | string;
}