24-04-2012, 11:45 AM
New Automotive Applications for Smart Radar Systems
[attachment=20674]
Introduction
One first traffic application of radar technology was invented by Christian Huelsmeyer, described in a well known German patent certificate dated April 30, 1904. Since this time many different radar sys-tems have been developed for vehicle, vessel and air traffic control in several civil, transportation or defense applications.
Automotive Applications
In the list below a number of functions are given along with a brief description and some key ques-tions from the radar expert’s point of view. The list can not complete, and we have to consider that different OEMs have different names as well as a slightly different understanding for their desired functions. Each OEM has its own predicted sequence for the introduction of those functions. It de-pends on what the customer research & marketing studies have identified so far as functions a cus-tomer is willing to pay for.
Automotive Radars – Categories and System Designs
The general requirement for automotive radars is to detect any targets in the field of view with high probability, high accuracy and low false alarm rate. Automotive sensors usually operate in the dedi-cated frequency band of 76.0 – 77.0GHz. Beside this technology, today SRR sensors are under devel-opment in the 24.0 –24.25GHz ISM band. They are supposed to be less expensive but still provide the advantages of microwave based sensing with respect to laser sensors and video cameras.
An Example Medium Range Radar System
As specified above, the requirements for many new automotive applications are quite demanding. High speed, highly dynamic measurement situations, for example, require a direct measurement of relative target speed. For cost reasons, some functions have to be fulfilled by single sensor operation. Furthermore, for ACC plus and other functions an effective range of up to 40m is required.
Outlook
The development of radar systems for automotive applications is a challenging task for radar technol-ogy. But there there seems to be a big market for automotive radars. While in a number of years we may see all automotive sensors operating at 77GHz, in the near future it seems more realistic that 24GHz radar technology will be introduced in addition to the already existing 77GHz LRRs.
[attachment=20674]
Introduction
One first traffic application of radar technology was invented by Christian Huelsmeyer, described in a well known German patent certificate dated April 30, 1904. Since this time many different radar sys-tems have been developed for vehicle, vessel and air traffic control in several civil, transportation or defense applications.
Automotive Applications
In the list below a number of functions are given along with a brief description and some key ques-tions from the radar expert’s point of view. The list can not complete, and we have to consider that different OEMs have different names as well as a slightly different understanding for their desired functions. Each OEM has its own predicted sequence for the introduction of those functions. It de-pends on what the customer research & marketing studies have identified so far as functions a cus-tomer is willing to pay for.
Automotive Radars – Categories and System Designs
The general requirement for automotive radars is to detect any targets in the field of view with high probability, high accuracy and low false alarm rate. Automotive sensors usually operate in the dedi-cated frequency band of 76.0 – 77.0GHz. Beside this technology, today SRR sensors are under devel-opment in the 24.0 –24.25GHz ISM band. They are supposed to be less expensive but still provide the advantages of microwave based sensing with respect to laser sensors and video cameras.
An Example Medium Range Radar System
As specified above, the requirements for many new automotive applications are quite demanding. High speed, highly dynamic measurement situations, for example, require a direct measurement of relative target speed. For cost reasons, some functions have to be fulfilled by single sensor operation. Furthermore, for ACC plus and other functions an effective range of up to 40m is required.
Outlook
The development of radar systems for automotive applications is a challenging task for radar technol-ogy. But there there seems to be a big market for automotive radars. While in a number of years we may see all automotive sensors operating at 77GHz, in the near future it seems more realistic that 24GHz radar technology will be introduced in addition to the already existing 77GHz LRRs.