Approach-based vehicle system actuation

1. An apparatus for vehicle system actuation, comprising:

a passive radio frequency (RF) entry system;

an external object tracking system;

a vehicle system and actuator thereof; and

a controller configured to:

detect and authenticate an electronic security token within a first RF zone;

wake the external object tracking system to monitor a first object tracking zone upon the detection and authentication of the electronic security token;

detect an object within the first object tracking zone, classify the detected object as a person, and determine trajectory information of the person;

determine an acceptable trajectory of the person based upon the trajectory information;

detect the person within a second object tracking zone closer in range to the vehicle than the first object tracking zone;

detect and authenticate the electronic security token within a second RF zone closer in range to the vehicle than the first RF zone; and

command the vehicle system actuator based upon the authentications of the security token and the acceptable trajectory of the person.

2. The apparatus of claim 1 , wherein the controller commands the vehicle system actuator when the trajectory information comprises a predetermined acceptable range of the person.

3. The apparatus of claim 1 , wherein the controller commands the vehicle system actuator when the trajectory information comprises a predetermined acceptable position and vector of the person.

4. The apparatus of claim 1 , wherein the external object tracking system comprises at least one of a radar system, a lidar system, an ultrasonic system, and a vision system.

5. The apparatus of claim 1 , wherein the electronic security token comprises one of a key fob, a mobile phone, and an access card.

6. The apparatus of claim 1 , wherein the trajectory information is based upon at least one of RF signal strength, RF signal phase, and RF signal time of flight.

7. The apparatus of claim 1 , wherein the vehicle system actuator comprises at least one of a door lock actuator, a door latch actuator and a door actuator.

8. A method for vehicle system actuation, comprising:

detecting and authenticating, with a passive radio frequency (RF) entry system, an electronic security token within a first RF zone;

waking an external object tracking system to monitor a first object tracking zone upon the detection and authentication of the electronic security token;

detecting, with the external object tracking system, an object within the first object tracking zone;

classifying the detected object as a person;

determining trajectory information of the person;

determining an acceptable trajectory of the person based upon the trajectory information;

detecting the person within a second object tracking zone closer in range to the vehicle than the first object tracking zone;

detecting and authenticating the electronic security token within a second RF zone closer in range to the vehicle than the first RF zone; and

commanding the vehicle system actuation based upon the authentications of the security token and the acceptable trajectory of the person.

9. The method of claim 8 , wherein the vehicle system actuation is commanded when the trajectory information comprises a predetermined acceptable range of the person.

10. The method of claim 8 , wherein the vehicle system actuation is commanded when the trajectory information comprises a predetermined acceptable position and vector of the person.

11. The method of claim 8 , wherein the electronic security token comprises one of a key fob, a mobile phone, and an access card.

12. An apparatus for vehicle system actuation, comprising:

a radar-based external object tracking system;

a passive radio frequency (RF) entry system comprising a security token;

a vehicle door actuation system; and

a controller configured to:

detect and authenticate the security token within a first RF zone;

wake the external object tracking system to monitor a first object tracking zone upon the detection and authentication of the security token;

detect an object within the first object tracking zone, and determine trajectory information of the detected object based upon radar signals;

classify the detected object as a person;

determine an acceptable trajectory of the person based upon the trajectory information;

detect the person within a second object tracking zone closer in range to the vehicle than the first object tracking zone;

detect and authenticate the security token within a second RF zone closer in range to the vehicle than the first RF zone; and

control the vehicle door actuation system based upon the authentications of the security token, and a determination that the person will not conflict with an actuated vehicle door system based upon the trajectory information.

13. The apparatus of claim 12 , wherein the RF security token comprises one of a key fob, a mobile phone, and an access card.

14. The apparatus of claim 12 , wherein the vehicle door actuation system comprises at least one of a door lock, a door latch and a door opener.