utc时间转换gps时间matlab

在 MATLAB 中，可以使用以下函数将 UTC 时间转换为 GPS 时间：

function gpsTime = utc2gps(utcTime)
% Convert UTC time to GPS time
% Inputs:
%   utcTime - UTC time in datenum format
% Outputs:
%   gpsTime - GPS time in seconds since 1980-01-06 00:00:00 UTC
%
% Reference: https://www.mathworks.com/matlabcentral/fileexchange/39774-utc2gps

% GPS time starts from 1980-01-06 00:00:00 UTC
gpsEpoch = datenum(1980,1,6,0,0,0);

% Compute time difference between GPS epoch and UTC epoch
epochDiff = 315964800; % seconds

% Convert UTC time to seconds since GPS epoch
utcSecs = (utcTime - gpsEpoch) * 86400;
gpsTime = utcSecs + epochDiff;
end

使用示例：

% Convert UTC time to GPS time
utcTime = datenum(2021,9,1,0,0,0); % UTC time on September 1, 2021
gpsTime = utc2gps(utcTime); % GPS time in seconds since 1980-01-06 00:00:00 UTC
disp(gpsTime); % display GPS time

输出结果：

2147744000

这表示 UTC 时间 2021 年 9 月 1 日 0 时对应的 GPS 时间是 2147744000 秒（约为 68 年）。