PATENT CLAIM ANALYSIS

Application Number: 15866125
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["701", "500000"]

Abstract:
A method of mitigating filter inconsistency of a heading estimate in an inertial navigation system is provided. The method includes inputting inertial measurements from at least one low-performance inertial measurement unit (IMU) in the inertial navigation system; inputting an initial-heading from at least one heading-information source; inputting an initial-heading uncertainty level associated with an error in the inputted initial-heading; initializing an initial-heading estimate with the inputted initial-heading; initializing an initial-heading uncertainty estimate with the inputted initial-heading uncertainty level; initializing an accumulated heading-change estimate to zero at a startup of the at least one low-performance IMU; and initializing an accumulated heading-change uncertainty estimate with an initial accumulated heading-change uncertainty level that is a value less than the inputted initial-heading uncertainty level; and periodically updating the accumulated heading-change estimate with the inertial measurements input from the at least one low-performance IMU.

Claim (Index 5):
The method of  claim 4 , further comprising:\n initializing a Local-Vertical frame so a wander angle is equal to the initial-heading angle; and initializing a heading component of the Body-to-Local-Vertical transformation with a value of zero.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 86.0
- Lexical Diversity: 2.63158
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15174207', '12215617', '15461028', '11102523', '14593266']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4555305780778452
- 35 USC 102 Novelty (BERT): 0.5458449319304131
- Combined Prediction Score: 0.464562013463102
- Mean Citation Score: 265.387674
- Max Citation Score: 461.54428
- Similarity Product: 279.04970487628464

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test