Abstract: The present invention provides a GPS interference source positioning method, apparatus, electronic device, and readable storage medium, which relates to the technical field of wireless communications.

Abstract: The present disclosure discloses a latitude-free construction method for a gravity acceleration vector under a swaying base earth system. Firstly, a target function based on output information of an accelerator in a fixed-length sliding window under a swaying base is constructed; secondly, measurement information in a period of time window is used to construct the target function, and gradient descent optimization is used to obtain a rough value of qiib0; and finally, the rough value of qiib0 and an apparent motion of a gravity acceleration vector of an inertial system are used to construct the gravity acceleration vector under the earth coordinate system. The present disclosure makes a key breakthrough for solving the problem of high precision alignment of a ship with unknown latitude under a swaying base.

Abstract: A MOS transistor (60, 62) is provided. The structure of the transistor (60, 62) includes: a semiconductor substrate (10), a channel area (20, 24), source/drain regions (22, 26), a gate (30, 32), a gate insulating layer (11), a shallow trench isolation region (12), a passive layer (50, 52), and holes (40, 42) formed with a certain distance to the gate insulating layer (11). Wherein both the shapes of the holes (40, 42) and the Young's modulus' difference between the material in the holes (40, 42) and that around the holes (40, 42) contribute to the stress concentration effect, thus the stress in the channel area (20, 24) is enhanced. The structure of the transistor (60, 62) can greatly reduce the stress attenuation during the transmission from stress resource to the sensitive region, and concentrate the stress in the sensitive region. The structure can be involved in large size device, especially.