Exact positioning is vital
Reliable, high-precision geo-positioning is an essential precondition for automated driving, as insufficiently accurate data can be a serious threat to road safety. Against this background, sensors for global navigation satellite systems (GNSS), in conjunction with specially-designed automotive antennas, are a key technology for self-driving vehicles.
Conventional embedded antennas usually fail to deliver the accuracy and reliability required for geo-positioning. They generally only support one GPS band, and do not eliminate or reduce the negative effect of metal car roofs on their radiation pattern. Furthermore, GNSS signal reception can be negatively affected by cell phone network interference or by intentional jamming.