PATENT CLAIM ANALYSIS

Application Number: 16409594
Application Type: Utility
Filing Date: 2019-05
Publication Date: 2019-08
Patent Classification: ["702", "144000"]

Abstract:
Methods and systems for compensating for the absence or loss of a sensor measurement in a heading reference system such as an aircraft attitude and heading reference system, integrated standby unit, or vehicle inertial system, provides an estimate of the lost sensor measurement by estimating the bank angle after a detected vehicle turn. The estimate of the bank angle may also be used to estimate the vehicle's speed. Additionally, when the lost sensor measurement is a temperature measurement, the described methods and systems offer an improvement over estimating air temperature using a standard (e.g., ISA) model. The methods and systems also allow for the refinement of computed estimates using filtering techniques, such as low-pass or Kalman filtering. The methods may be iteratively repeated for each detected turn in order to maintain an accurate estimate of the lost sensor measurement or other estimates, such as vehicle speed.

Claim (Index 26):
A method for compensating for a loss of a sensor measurement in an attitude and heading reference system on a vehicle, the method comprising:\n detecting a sensor measurement loss for at least one sensor mounted on the vehicle, wherein the sensor measurement is otherwise used to calculate the vehicle's true airspeed; detecting a turn by the vehicle; in response to detecting the turn, calculating a first vehicle bank angle using at least one gyroscope mounted on the vehicle; estimating the vehicle's true air speed using the first vehicle bank angle and the at least one gyroscope; estimating a value for the lost sensor measurement using the vehicle's estimated true airspeed and at least one of a properly operating pressure sensor or a properly operating temperature sensor mounted on the vehicle; estimating a second vehicle bank angle using the vehicle's estimated true airspeed and the at least one gyroscope or the estimated value for the lost sensor measurement for the at least one sensor; and compensating for a gyro-bias drift rate by augmenting a sensor measurement model using the estimated second bank angle.

Metadata:
- Claim Count in Document: 80.0
- Percentile: 100.0
- Lexical Diversity: 2.05063
- Patent Class: 702.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15281015', '11628115', '15620239', '11375486', '13013926']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2035989482868189
- 35 USC 102 Novelty (BERT): 0.6301039009138
- Combined Prediction Score: 0.246249443549517
- Mean Citation Score: 283.0108
- Max Citation Score: 599.4968
- Similarity Product: 551.4726040451526

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

Dataset: test