import { TalkerSentence } from "../../types/sentences/TalkerSentence";
import { RawNmeaSentence } from "../../types/sentences/RawNmeaSentence";
export declare enum GsaMode {
    Manual = "M",
    Automatic = "A"
}
export declare enum GsaFix {
    NoFix = 1,
    Fix2D = 2,
    Fix3D = 3
}
export declare class GSA extends TalkerSentence {
    static readonly ID: string;
    constructor(data: RawNmeaSentence);
    get mode(): GsaMode;
    get fix(): GsaFix;
    get ids(): number[];
    get positionalDop(): number;
    get horizontalDop(): number;
    get verticalDop(): number;
    get systemId(): null | string;
    get valid(): boolean;
    get invalidReason(): null | string;
}