Invention Grant
- Patent Title: Selection of a subset of global navigation satellite system measurements based on prediction of accuracy of target parameters
- Patent Title (中): 基于目标参数精度的预测,选择全球导航卫星系统测量的一个子集
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Application No.: US13920427Application Date: 2013-06-18
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Publication No.: US09244172B2Publication Date: 2016-01-26
- Inventor: Raymond M. O'Connor , Ivan Giovanni Di Federico , Sergey Averin , Daniel Milyutin
- Applicant: Topcon Positioning Systems, Inc.
- Applicant Address: US CA Livermore
- Assignee: Topcon Positioning Systems, Inc.
- Current Assignee: Topcon Positioning Systems, Inc.
- Current Assignee Address: US CA Livermore
- Agency: Chiesa Shahinian & Giantomasi PC
- Main IPC: G01S19/28
- IPC: G01S19/28 ; G01S19/05

Abstract:
An optimum measurement subset with a specified number n of elements is generated from a set of N>n weighted input global navigation satellite system (GNSS) measurements. A group of trial measurement subsets is generated by removing a different individual weighted input GNSS measurement from the set. A value of accuracy criterion for a target parameter is calculated for each trial measurement subset, and the trial measurement subset with the minimum value of accuracy criterion is selected. A new group of trial measurement subsets is generated by removing a different individual weighted GNSS measurement from the previously selected trial measurement subset. A value of accuracy criterion is calculated for each new trial measurement subset, and a new trial measurement subset with the new minimum value of accuracy criterion is selected. The process is repeated until the selected trial measurement subset has the specified number n of elements.
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