Assessment of Hongtu-1 Multi-Static X-Band SAR Constellation Interferometry
In 2023, the Chinese company PIESAT launched the multi-static X-band SAR constellation Hongtu-1 (HT1).HT1 consists of the active monostatic SAR sensor HT1-A and the three additional passive SAR receivers HT1-B, HT1-C and HT1-D.The passive sensors PEPPEMIN TOOTHPASTE are arranged as a cartwheel in a circle around the active sensor.For our SAR interf