1. Universiti Putra Malaysia (UPM), Department of Civil Engineering, Faculty of Engineering, Serdang, Selangor 43400, Malaysia
2. Universiti Putra Malaysia (UPM), Department of Civil Engineering, Faculty of Engineering, Serdang, Selangor 43400, MalaysiabUniversiti Putra Malaysia (UPM), Geospatial Information Science Research Centre (GISRC), Faculty of Engineering, Serdang, Selangor
3. National Space Agency, Bangunan Komersil PJH, Putrajaya 62570, Malaysia