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 41):
A system for compensating for a loss of a temperature sensor measurement in an attitude and heading reference system on a vehicle, the system comprising:\n a memory; at least one temperature sensor mounted on the vehicle and coupled to the memory; at least one gyroscope mounted on the vehicle and coupled to the memory; at least one pressure sensor mounted on the vehicle and coupled to the memory; a processor coupled to the at least one temperature sensor, the at least one gyroscope, the at least one pressure sensor and the memory, the processor being configured to:\n detect a temperature sensor measurement loss from the at least one temperature sensor, wherein the temperature measurement is otherwise used to calculate the vehicle's true airspeed; \n detect a turn by the vehicle; \n in response to detecting the turn, calculate a first vehicle bank angle using the at least one gyroscope; \n estimate a first static air temperature using the first vehicle bank angle and the at least one pressure sensor; \n estimate a second static air temperature independently of the first vehicle bank angle; \n compute an adjusted static air temperature using the first and second static air temperatures; and \n compensate for a gyro-bias drift rate by augmenting a sensor measurement model using the adjusted static air temperature.

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): 0.2071767496072852
- 35 USC 102 Novelty (BERT): 0.6165642474165831
- Combined Prediction Score: 0.2481154993882149
- Mean Citation Score: 283.0108
- Max Citation Score: 599.4968
- Similarity Product: 502.5865331036569

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