上海伽太电子科技有限公司提供340GHz、220GHz、94GHz毫米波雷达解决方案,主要提供以下模组
1. 毫米波大功率源(千瓦量级@94GHz,50瓦@220GHz,30瓦@340GHz))
2. 毫米波接收通道(直接检波式、超外差式接收机、)
3. 毫米波天线(卡塞格林天线、反射面、透镜天线、圆锥/角锥天线等等)
4. 毫米波波导组件等等
Figure 1: IRAD 340 GHz radar undergoing field trials. A key design aspect of IRAD which enabled high frame rates was to use high speed, small diameter beam steering components prior to a two-lens telescope which provided the main focussing. We employed a conventional 2-axis galvanometer scanner which suited the long range design such that the 1.5° x 1.5° FoV was achieved with ±14° beam deflection (±7° galvo deflection) via the M = 9 telescope. A typical image size of 36 x 36 pixels requires 18 cycles of the fast axis mirror which at 10 Hz frame rate means driving the fast axis galvo at 180 Hz which is just within its maximum frequency of 200 Hz. At frame rates above a few Hz, the finite response characteristics of the galvo closed loop control circuits causes beam scan distortion but this is compensated by characterisation and pre-distortion of the driving waveform [11].
Figure 2: Example IRAD images: blank subject (left), subject with threat 1 (middle), subject with threat 2 (right).
Figure 3: Pathfinder 220 GHz radar.
Figure 4: Pathfinder 220 GHz point cloud of mannequin.
Figure 5: CAD model of CONSORTIS 340 GHz radar. The 16 channel focal plane array of transceivers is housed in the box at upper left. The Dragonian mirror pair, double disc scanner and pan mirror are seen in the centre supported by the radar sub-chassis.