Abstract:
본 발명은 표적 영역의 중심과의 경사 거리에서 요동 오차를 보상하는 방법에 관한 것이다. 상기 방법은 상기 표적 영역을 소정 단위로 영역 분할(subarea)하는 단계와; 상기 분할된 각 영역 내에서 소정 단위로 합성 개구를 분할(subaperture)하는 단계와; 상기 분할된 각 합성 개구 내에서 요동 오차를 근사화하는 단계와; 상기 각 합성 개구 내에서 비행 경로를 직선 비행 경로로 보상하는 단계와; 상기 각 영역의 중심을 상기 표적 영역의 중심으로 이동시키는 단계를 포함한다.
Abstract:
PURPOSE: A method for compensating shake for a spotlight synthetic aperture radar is provided to minimize the deterioration of SAR image quality by using taylor approximation. CONSTITUTION: In a method for compensating shake for a spotlight synthetic aperture radar, an agitation error is compensated in the slant distance from a center of a target area. The target area is divided into several regions. A synthetic aperture is partitioned(S103). The agitation error is approximated in the synthetic aperture(S105-S106). The flight path within the synthetic aperture is compensated by a direct flight route. The center of each region is carried to the center of a target area(S107).
Abstract:
The present invention relates to an inter-system connecting configuration and a method for testing a simulation model, wherein the configuration includes a discrete event-based simulation system progressing simulation time in an ASAP method, and a test system physically separated from the simulation system and controlling the simulation system and a system to be tested to conduct a test. The simulation system has a test clock interface module for managing the timer of the test system. The test system has a test clock manager module including a timer management queue for synchronization with the simulation time. The test clock manager module is connected to the test clock interface module. Thus, the progress of time between the simulation system and the test system can be synchronized on the basis of the simulation time. [Reference numerals] (10) Test system; (11) Test case; (12) Test execution management module; (13,23) Operating system; (14) Test clock manager; (20) Simulation system; (21) Simulation model; (22) Simulation kernel; (24) Test clock interface
Abstract:
PURPOSE: A method for modeling packet transceiving operation in a cut-through relay communication method is provided to improve the accuracy of measuring a start time of a network use state after a delivery delay generated in an actual packet and a relay. CONSTITUTION: A transmitting unit transmits an ineffective packet and an effective packet to a relay unit(S310). The relay unit relays the packets(S320). The relay unit manufactures a restored actual packet as the ineffective packet and the effective packet. The relay unit transmits the packets to a receiving unit(S330). The relay unit extracts a packet identifier and a physical feature value generated in a network before a relay from the received effective packet(S340). The receiving unit extracts the packet identifier and the physical feature value generated in a network after a relay from the received effective packet(S350). The receiving unit models the physical feature value generated in the actual packet(S360). [Reference numerals] (AA) Start; (BB) End; (S310) Creating and transmitting effective and ineffective packets to a relay unit by a transmitting unit; (S320) Relaying the packets by the relay unit; (S330) Creating and transmitting effective and ineffective packets to a receiving unit by the relay unit; (S340) Extracting characteristic values generated in packets in a network before relaying; (S350) Extracting characteristic values generated in packets in the network after relaying; (S360) Modeling physical characteristics generated in actual packets from the extracted characteristic values