Indo-Pacific — 2026-08-16

Taiwan Counter-Drone Shield Exposed by Testing Failures as System Cannot Detect Newer Chinese Drone Frequencies

BLUFDual procurement failures and an inability to counter fiber-optic or AI-guided platforms leave Taiwan's counter-drone architecture structurally mismatched against the PLA's current drone inventory.

Taiwan's Audit Office found that the NT$3.55 billion (US$111 million) fixed-site counter-drone system built by the National Chung-Shan Institute of Science and Technology cannot detect or jam the 5.1GHz frequency used by newer PLA drones and only partially covers the BeiDou-3 satellite band 12. The audit also found the system lacks countermeasures against fiber-optic and AI-guided drones and runs six to 12 months behind schedule due to construction delays and component shortages 23. Separately, the army terminated a planned purchase of 26 fixed-site systems from contractor Tron Future Tech after the equipment failed its third and final acceptance test 4. Defense Minister Wellington Koo said the system struggles to fuse search and passive radar data when facing multiple drone waves 4. Ministry spokesman Sun Li-fang said NCSIST has already verified jamming capability for the 5.1GHz frequency and will field it through future upgrades 4.

Analysis
Taiwan's audit exposes a structural gap between procurement pace and PLA drone development rather than an isolated glitch: NCSIST's fixed-site system misses the 5.1GHz band and only partially covers BeiDou-3, while the army's parallel Tron Future Tech buy collapsed after a third failed acceptance test, leaving no field-ready fallback. Koo's admission that data fusion breaks down against multiple simultaneous drone waves points to a software integration problem beneath the frequency gap, undercutting the ministry's claim that upgrades alone will close it, and reliance on jamming weakens further as fiber-optic and AI-guided drones cut dependence on RF links. Sourcing rests on a single primary Chinese-language account with four English outlets converging without independent verification. The ministry counters that most gaps trace to threats emerging after the 2021 program start and that 5.1GHz jamming is already verified pending fielding.

5 sources

Taiwan drone defences fall short against Beijing's evolving technology, audit reveals - South China Morning Post
Drone defense systems lacking, audit report shows - Taipei Times
Taiwan's Drone Defenses Can't Handle Fiber-Optic, AI-Guided Drones: Audit - The Defense Post
Taiwan counter-drone shield exposed by testing failures and China new threats - Interesting Engineering
國軍現行反無人機漏中國北斗頻段審計部揭4大破口 - Liberty Times (LTN Military Channel)