暂时使用星下点坐标作为图像左上角坐标

pkg/producer/meta.go

@@ -3,6 +3,9 @@ package imageproc
 import (
 	"encoding/xml"
 	"os"
+	"path/filepath"
+	"strings"
+	"time"
 )
 
 // 定义与XML结构对应的Go结构体
@@ -55,7 +58,38 @@ type Corners struct {
 	LowerLeft  Location `xml:"LowerLeft"`
 }
 
-func WriteProductMeta(productMeta *ProductMeta, filename string) error {
+func (r *Registrator) makeProductMeta(scene *Scene) *ProductMeta {
+	meta := &ProductMeta{
+		Satellite:      "SJY01",
+		Sensor:         "PMS",
+		OutputFormat:   "GTiff",
+		ProductGenTime: time.Now().Format("2006-01-02T15:04:05"),
+		Width:          scene.Width,
+		Height:         scene.Height,
+		MapProjection:  "GEOGRAPHIC",
+		EarthEllipsoid: "WGS_84",
+		ProductLevel:   "L1A",
+	}
+
+	switch scene.Type {
+	case "PAN":
+		meta.Gsd = 1.25
+		meta.Bands = 1
+	case "MSS":
+		meta.Gsd = 5
+		meta.Bands = 4
+	}
+
+	meta.ProductID = filepath.Base(strings.TrimSuffix(scene.Tiff, ".tiff"))
+	startTime, centerTime, endTime := r.SceneImageTime(scene)
+	meta.StartTime = startTime.Format("2006-01-02T15:04:05.000")
+	meta.EndTime = endTime.Format("2006-01-02T15:04:05.000")
+	meta.CentreTime = centerTime.Format("2006-01-02T15:04:05.000")
+
+	return meta
+}
+
+func (r *Registrator) writeProductMeta(productMeta *ProductMeta, filename string) error {
 	output, err := xml.MarshalIndent(productMeta, "", "    ")
 	if err != nil {
 		return err