Tue, Aug 22, 2023 page2

• UAV defense strategy needs overhaul: officer

  • By Jonathan Chin / Staff writer, with CNA
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  Taiwan must revamp its defensive strategy to protect critical infrastructure from uncrewed aerial vehicles (UAV), a Marine Corps officer wrote in the Institute for National Defense and Security Research newsletter.

  Drones have played a significantly larger role in the Russia-Ukraine conflict than previously expected, with both sides waging a campaign of drone strikes against their adversary’s infrastructure, Lieutenant Colonel Chang Tzu-hung (張子鴻), a visiting military fellow at the institute, wrote on Aug. 8.

  The conflict has underscored that UAVs possess many benefits as weapons systems, including their range, maneuverability and ability to strike from varying altitudes, Chang said, adding that the importance of anti-drone warfare has increased accordingly.

  

  An MQ-9 Sea Guardian uncrewed maritime surveillance drone flies over the USS Coronado during a drill in the Pacific Ocean on April 21, 2021.

  Photo: US Navy / Chief Mass Communication Specialist Shannon Renfroe via AP

  Crucial infrastructure protection refers to defensive measures taken to preserve the parts of a country’s infrastructure that are most essential to the maintenance of a functioning government, the armed forces, the national economy and morale, he said.

  While the Taiwanese military was apparently successful in defending key infrastructure against simulated air raids and other forms of attacks in this year’s Han Kuang military exercises, techniques still need to be refined to handle the use of UAVs in gray zone activities, he said.

  South Korea, vaunted as the world’s sixth most powerful military, proved incapable of dealing with North Korean drones during a large scale incursion that took place in December last year, Chang said.

  Drones from the North flew in and around South Korea’s airspace, disrupted more than 30 flights at the Incheon and Gimpo international airports and caused considerable public alarm, he said.

  South Korea’s failure to respond to the drones effectively in large part stemmed from a reluctance to employ soft or hard-kill weapons against the UAVs because of the fear that downed drones could result in collateral damage in residential areas, Chang said.

  This proves that defending units must have the confidence to take decisive action without delay, and be given clear guidelines with which to assess the risks associated with the loss of civilian lives and property, escalation and the threat the drone might pose to the facility being defended, he said.

  The dangers of inaction have to be balanced against the dangers of action such as harming civilians or escalating the situation, Chang added.

  Alarmingly, most of Taiwan’s critical infrastructure is in or near urban centers, and the authority to make security arrangements for many strategically valuable facilities falls on civilian agencies without the necessary expertise to create such guidelines, he said.

  In addition, drone attacks do not need to destroy a target to achieve an effect in war, as disrupting the normal operations of a key facility is enough to undermine the adversary’s ability to conduct military operations and sustain civilian morale, he said.

  In light of these factors, the armed forces’ counter-drone measures cannot be said to be reliably effective, particularly with regard to fending off attacks by small or medium-sized UAVs, Chang said.

  The military is urged to explore the specific methods used for identification and tracking, threat reporting, and warning and defense fire with an eye toward shortening the kill chain, he said, referring to the response time between detecting and destroying a threat.

  Integrating an algorithmic technology that can automatically identify enemy drones from the input of radar, infrared and optical sensors would be a potential solution to dealing with the UAV threat, Chang said.
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