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附件/2026/个人知识库/数据库/回补中间一段时间的GNSS数据.md

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+```sql
+declare @dt datetime --时间
+declare @gpsindex numeric(18,2) --GPSIndex
+declare @rand float --随机数
+declare @count int --计数
+```
+--declare @GPSINDEX1 bigint
+```sql
+declare @adatetime1 datetime
+declare @endDate datetime; --结束时间
+declare @X1 float
+declare @Y1 float
+declare @H1 float
+declare @DX1 float
+declare @DY1 float
+declare @DH1 float
+declare @X0 float
+declare @Y0 float
+declare @H0 float
+
+set @dt = '2020-1-17 12:30:00.000';
+set @endDate= '2020-5-18 18:00:00.000';
+select top 1 @X1 = X,@Y1 = Y,@H1 = Height,@DX1=dltaX,@DY1=dltaY,@DH1=dltaH from DC_GB09_STC where aDatetime < @dt order by aDatetime desc
+```
+--求出基准坐标
+```sql
+set @X0=@X1-@DX1
+set @Y0=@Y1-@DY1
+set @H0=@H1-@DH1
+select @X0,@Y0,@H0
+```
+while(@dt < @endDate) begin
+
+```sql
+set @gpsindex = convert(bigint, datediff(ss, '1970-01-01 00:00:00', @dt))*1000 + datepart(ms,@dt)
+SET @DX1 = RAND()*8-8/2;
+SET @DY1 = RAND()*8-8/2;
+SET @DH1 = RAND()*10-10/2;
+SET @X1 = @X0+ @DX1/1000
+SET @Y1 = @Y0+ @DY1/1000
+SET @H1 = @H1+ @DH1/1000
+SET @adatetime1 = DATEADD(S,@gpsindex/1000,'1970-01-01 00:00:00')
+BEGIN TRY insert into DC_GB09_STC([GPSIndex],[aDatetime],[X],[Y],[Height],[dltaX],[dltaY],[dltaH])VALUES(@gpsindex,@adatetime1,@X1,@Y1,@H1,@DX1,@DY1,@DH1)
+END TRY BEGIN
+```
+CATCH END CATCH
+--****************
+```sql
+set @count = @count + 1
+set @dt = DATEADD(MINUTE,30,@dt) --每次递增5min
+```
+end