Chieh-Chung noted that Taiwan’s long-range early warning radar in Leshan (樂山), Hsinchu, has a detection radius exceeding 3,000 kilometers, reaching Inner Mongolia. The launch site this time is within 1,500 kilometers of Leshan, allowing our radar to capture and immediately identify the missile launch location. However, determining whether the missile is a Julang-2 or Julang-3, or whether the submarine was surfaced or submerged, is beyond our capabilities and likely derived from intelligence exchanges.
He stated that although various countries have complained about China’s late notification, the movement of the “Yuanwang" telemetry ship to the South Pacific and China’s announcement of dangerous waters made it clear that the PLA was preparing for a test launch. The U.S. could use satellites and other tools to enhance surveillance of potential launch sites, possibly allowing them to ascertain whether the submarine was surfaced or submerged at the time.
Chieh-Chung also pointed out that if the Julang-3 were launched from the Bohai Sea and traveled northeast over the Arctic, it could reach the entire U.S.; launching from the South China Sea would not reach the U.S. East Coast. With a meeting between Xi and Trump scheduled for September, Beijing likely does not want to overly provoke President Trump, potentially straining the recently eased relations.
揭仲表示，日本對彈道飛彈監偵手段，推測是美日經由軍事合作管道，在解放軍發射飛彈後，由美國監偵衛星監控並將位置訊息傳遞日方，日方再藉由神盾艦與西南列島上的陸基雷達進行監控描繪，最後解算出全程的彈道軌跡。
日本在2016年因應釣魚台爭議與共艦擴張，在離台灣距離僅110公里的與那國島設置沿岸監視部隊並增設陸基海空搜索雷達陣地。記者曾實際至當地，可見陣地由4種不同雷達組成。不過由於與那國島當地高溫高濕環境，所有雷達都被保護罩層層保護，外界無從得知雷達型號，不過雷達陣地位處與那國西部，東側靠山，整體的偵搜範圍為西北、西、西南向為主。對日方針對本次解放軍在台灣東北部、東部、與東南部的軍演，是最具偵搜有利位置的陣地。
國軍偵蒐最強主力為位在新竹，在2012年啟用的長程預警雷達，偵蒐有效距離可達3600公里，過去曾多次被披露有效掌握北韓彈道飛彈的發射軌跡。揭仲表示，以國軍的偵搜能力，解放軍的彈道飛彈應都可有效的全程掌握並計算彈著點。承平時期不能交火，比的就是偵蒐能力，國防部在新聞處理上可以大膽一點，就不會有像日本的消息出來之後國內一片質疑的聲浪。(圖片擷取自聯合新聞網)
揭仲的國防與中共軍事專題研究 
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