Structural ATR Weaknesses and the Proposed TRACE Solution Sample Clauses

Structural ATR Weaknesses and the Proposed TRACE Solution. A particular problem with trying to detect targets in a cluttered environment is the abundance of signals and the performance-degrading effects on ATRs of decoys and background traffic.302 Even where genuine signals can be separated from the noise, this often requires significant computing power, which thus far has been unviable for mobile platforms.303 An alternative is to use Synthetic Aperture Radar (SAR), which is an active sensor that sends out multiple radar pulses and collects the returning signals to construct an image of objects within range.304 However, the images are grainy and difficult enough for humans to interpret.305 Thus, for ATR systems designed for autonomous attack, current SAR techniques will offer little input value.306 In this connexion, DARPA is currently trying to solve the ATR problem under its Target Recognition and Adaptation in Contested Environments (TRACE) program. This aims to “develop algorithms and techniques that rapidly and accurately identify military targets using radar sensors on manned and unmanned tactical platforms”.307 Concretely, TRACE intends to combine the most advanced XXXx and other machine learning techniques with SAR, to enable clearer images of a target to be constructed from standoff ranges; for these to be amenable to ATR detection and classification amid background traffic and decoys; and, crucially, to achieve all of this with lower computing power and energy consumption than current systems.308 DARPA summarises the TRACE program goals as follows.309 302 Xxxx Xxxxxx, ‘Target Recognition and Adaptation in Contested Environments (TRACE)’, DARPA Program Information <xxxxx://xxx.xxxxx.xxx/program/trace> accessed 14 May 2018. 303 Ibid. 304 Xxxxxxxxx (n 250), 63. 305 Ibid., 92. 306 Xxxxxxx (n 13), 86; Xxxxxxxxx, ibid. 307 DARPA, ‘Broad Agency Announcement: Target Recognition and Adaptation in Contested Environments (TRACE)’, Strategic Technology Office: DARPA BAA-15-09 (1 December 2014), 6 <xxxxx://xxx.xxx.xxx/utils/view?id=d68e7ccabd593f2f46b2328fa18dc6db> accessed 14 May 2018. 308 Xxxx Xxxxxx, ‘DARPA TRACE Program Using Advanced Algorithms, Embedded Computing for Radar Target Recognition’, Military and Aerospace Electronics (24 July 2015) <xxxx://xxx.xxxxxxxxxxxxxxxxx.xxx/articles/2015/07/hpec-radar-target-recognition.html> accessed 14 May 2018. 309 DARPA (n 307), 6.
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