Abstract: A pre-crash sensing system (10) for a source vehicle (50) having a source vehicle length and a source vehicle width that is coupled to a countermeasure system (30) is described. The system includes an object sensor (17) having a radar sensor (18) generating an object distance signal and an object relative velocity signal, and a vision system (20) generating an object classification signal. A controller (12) is coupled to the object sensor for activating the countermeasure system (30) based on the object distance, relative velocity and the object classification signal.

Abstract: A pre-crash sensing system (10) for a source vehicle (50) having a source vehicle length and a source vehicle width that is coupled to a countermeasure system (30) is described. The system includes an object sensor (17) having a radar sensor (18) generating an object distance signal and an object relative velocity signal, and a vision system (20) generating an object classification signal. A controller (12) is coupled to the object sensor for activating the countermeasure system (30) based on the object distance, relative velocity and the object classification signal.

Abstract: A pre-crash sensing system (10) for a source vehicle (50) having a source vehicle length and a source vehicle width that is coupled to a countermeasure system (30) is described. The system includes an object sensor (17) generating an object distance signal, object relative velocity signal and an object classification signal. A controller (12) is coupled to the object sensor (17). The controller determines a danger zone based on the source vehicle length, source vehicle width and object length and object width. The source vehicle time interval is determined by the controller (12) corresponding to the time the source vehicle is within the danger zone. The controller (12) determines the object time interval corresponding to the time the object is within the danger zone. The controller (12) determines a point of impact in response to the object time interval and the source vehicle time interval. The controller (12) activates the countermeasure in response to the point of impact.

Abstract: A pre-crash sensing system (10) for a source vehicle (50) having a source vehicle length and a source vehicle width that is coupled to a countermeasure system (30) is described. The system includes an object sensor (17) generating object distance signal, object relative velocity signal and an object classification signal. A controller (12) is coupled to the object sensor (17). The controller determines a danger zone (52) based on the source vehicle length, source vehicle width, object length and object width. The controller determines a source vehicle time interval corresponding to the time the source vehicle is within the danger zone. Controller (12) determines an object time interval corresponding to the time the object is within the danger zone and when the source vehicle time interval corresponds with the target vehicle time interval. The controller activates the countermeasure system (30) when the source vehicle time interval coincides with the target vehicle time interval.

Abstract: A sensing system (10) for an automotive vehicle includes a first radar sensor (18) generating a first and a second range signal, and a second radar sensor (20) generating a first and a second range signal corresponding to two sampling time periods. A controller (12) is coupled to the first radar sensor (18) and the second radar sensor (20). The controller (12) calculates a first position and a second position from the first radar sensor and the second radar sensor range measurements. The controller (12) generates a first set of points corresponding to the first position and a second set of points corresponding to the second position. The controller (12) calculates a plurality of calculated range-rate values in response to the first set of points and the second set of points. The controller (12) compares the plurality of calculated range-rate values to the measured range-rate and selects the closest range-rate from the plurality of calculated range-rate values.