using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using XdCxRhDW.Entity;

namespace XdCxRhDW.Api.AddIns
{

    /// <summary>
    /// 频差值推算接口
    /// </summary>
    public static class DfoCalcAPI
    {
        //频差推算算法(用于频差预测调用)
        private const string dfoDll = @"AddIns\频差推算\DLL_DTF.dll";

        /// <summary>
        /// 频差预测
        /// </summary>
        /// <param name="target_llh">目标位置(3)</param>
        /// <param name="main_sat">星历位置(6)</param>
        /// <param name="fu">上行频点(Hz)</param>
        /// <returns></returns>
        [DllImport(dfoDll, EntryPoint = "CFO_Comput", CallingConvention = CallingConvention.Cdecl)]//频差预测
        private extern static double CFO_Comput(double[] target_llh, double[] main_sat, double fu);


        /// <summary>
        /// 频差预测
        /// </summary>
        /// <param name="targetPos"></param>
        /// <param name="satEph"></param>
        /// <param name="fuHz"></param>
        /// <returns></returns>
        public static double DfoCalc(double[] targetPos, double[] satEph, double fuHz)
        {
            return CFO_Comput(targetPos, satEph, fuHz);
        }
    }
}