Abstract: Among the impact positioning technologies in dealing with the space debris impacts, the traditional method is based on the arrival time difference of the impact signals at different positions to locate the impact point. However, for a stiffened plate, there inevitably will be the reflection and the attenuation of the signals, so, it is hard to achieve a high accuracy positioning. To solve this problem, we propose a novel impact positioning method based on the cross-correlation impact intensity map. In this method, the cross-correlation coefficient curves of different sensors are used to calculate the impact intensities of each experimental point on the test plate to form an impact intensity map. The impact point can be located based on the maximum value in the map. To verify the reliability of the method, a series of experiments are conducted with eight detectors and covering thirteen test points. It is shown that with this method, the impact location on a stiffened plate can be determined; with a proper filter band, the average location error is as small as 4.22 cm.