PATENT CLAIM ANALYSIS

Application Number: 15995877
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-09
Patent Classification: ["375", "341000"]

Abstract:
In one implementation, a receiver has a module to calculate the cross-correlation between a portion of a digital representation of a received signal and a reference signal. The receiver also has a module to generate an estimate of a portion of a message potentially included in the digital representation of the received signal and a screening module to determine the likelihood that the received signal includes a message. For a received signal that is determined likely to include a message, the receiver includes a carrier refinement module to shift the frequency of carrier pulses in the digital representation of the received signal toward a desired frequency and to align the phase of carrier pulses in the digital representation of the received signal with a desired phase and a coherent matched filter to recover the message from the digital representation of the received signal.

Claim (Index 1):
A receiver for receiving 1090 MHz Mode S Extended Squitter (\u201cES\u201d) ADS-B messages comprising:\n an analog-to-digital converter configured to convert a received analog signal into a digital representation of the received signal; a carrier detection module configured to determine if a spectral component within a range of 1090 MHz is present within a portion of the digital representation of the received signal; a cross-correlation module configured to:\n calculate, responsive to a determination by the carrier detection module that a spectral component within the range of 1090 MHz is present within the portion of the digital representation of the received signal, a measure of the cross-correlation between the portion of the digital representation of the received signal and a reference signal representing an expected pulse pattern for a specific portion of a 1090 MHz Mode S ES ADS-B message, the calculated measure of the cross-correlation representing a first measure of the likelihood that the digital representation of the received signal includes a 1090 MHz Mode S ES ADS-B message, and \n determine if the first measure of the likelihood that the digital representation of the received signal includes a 1090 MHz Mode S ES ADS-B message satisfies a first condition; \n a signal estimator module configured to generate, responsive to a determination that the first measure satisfies the first condition, an estimate of a portion of a 1090 MHz Mode S ES ADS-B message potentially included in the digital representation of the received signal corresponding to the portion of the digital representation of the received signal; a screening module configured to:\n generate a feature vector representing n\u22652 features of the estimate of the portion of the 1090 MHz Mode S ES ADS-B potentially included in the digital representation of the received signal, \n project the feature vector into a corresponding n-dimensional feature space, \n determine, based on the projection of the feature vector into the feature space, a second measure of the likelihood that the digital representation of the received signal includes a 1090 MHz Mode S ES ADS-B message, and \n determine if the second measure of the likelihood that the digital representation of the received signal includes a 1090 MHz Mode S ES ADS-B message satisfies a second condition; \n a carrier refinement module configured to shift the frequency of carrier pulses in the digital representation of the received signal toward a desired frequency and to align the phase of carrier pulses in the digital representation of the received signal with a desired phase responsive to a determination that the second measure satisfies the second condition; and a coherent matched filter that is phase-matched to the desired phase and configured to recover a 1090 MHz Mode S ES ADS-B message from the digital representation of the received signal.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 94.0
- Lexical Diversity: 2.64286
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15462450', '15462415', '13689874', '13875749', '11644422']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5215570557399002
- 35 USC 102 Novelty (BERT): 0.59276184554319
- Combined Prediction Score: 0.5286775347202292
- Mean Citation Score: 321.775684
- Max Citation Score: 495.1223
- Similarity Product: 490.455543926412

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

Dataset: test