Estimation system and method for aviation GPS signal delay

• Main Authors: BING ZHIGUANG, XIAO ZHENFEI, WANG FEI, ZENG JIE, CONG CHAO, YANG LIANGYONG, SUN WEN
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2020
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses an estimation system for an aviation GPS signal delay, and simultaneously discloses an estimation method for the aviation GPS signal delay. The estimation method is provided for the time delay of GPS signal positioning. By comparing GPS update time and navigation server update time, selecting one, which is relatively close to delay estimation time, of the GPS update time and the navigation server update time, and adding an estimated value deltatest of one time delay, the influence of the unknown delay time is reduced to the maximum extent, and a maximum error value is defined in the range of deltatest; and through the adoption of the technical scheme, the obtained estimated value can be close to a real value to the maximum extent, and a delay error can be defined within a certain range, and the implementation is more convenient. 本发明公开了一种用于航空GPS信号延迟的估算系统，同时公开了航空GPS信号延迟的估算方法，是针对GPS信号定位的时间延迟提出了一种估算方法，通过比较GPS更新时间和导航服务器更新时间，选择延迟估算时间相对接近的一种，并且增加一个时间延迟的估计值△test，最大限度的减少未知延迟时间的影响，且将误差最大值限定在△tes