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This paper reports the successful application of automatic target recognition and identification (ATR/I) algorithms to simulated 3D imagery of 'difficult' military targets. QinetiQ and Selex S&AS are engaged in a joint programme to build a new 3D laser imaging sensor for UK MOD. The sensor is a 3D flash system giving an image containing range and intensity information suitable for targeting operations from fast jet platforms, and is currently being integrated with an ATR/I suite for demonstration and testing.The sensor has been extensively modelled and a set of high fidelity simulated imagery has been generated using the CAMEO-SIM scene generation software tool. These include a variety of different scenarios (varying range, platform altitude, target orientation and environments), and some 'difficult' targets such as concealed military vehicles. The ATR/I algorithms have been tested on this image set and their performance compared to 2D passive imagery from the airborne trials using a Wescam MX-15 infrared sensor and real-time ATR/I suite.This paper outlines the principles behind the sensor model and the methodology of 3D scene simulation. An overview of the 3D ATR/I programme and algorithms is presented, and the relative performance of the ATR/I against the simulated image set is reported. Comparisons are made to the performance of typical 2D sensors, confirming the benefits of 3D imaging for targeting applications.

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