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公开(公告)号：US12235367B2
公开(公告)日：2025-02-25
申请号：US17953512
申请日：2022-09-27
Inventor： John E. Acheson , Michael N. Kloos , Nathaniel L. James , Mitchell Dennis
IPC: G01S19/37
Abstract: Techniques are provided for employing an embedded software defined radio (SDR) in a navigation system. A navigation system implementing the techniques according to an embodiment includes a global positioning system (GPS) receiver configured to acquire and track received GPS signals. The system also includes an SDR configured to process received communication signals. The communication signals include timing data. The SDR is further configured to calculate position and navigation data based on a combination of the processed communication signals and the tracked GPS signals provided by the GPS receiver. The system further includes a system timer configured to provide a common time base for use by the GPS receiver and the SDR. The navigation system is implemented in an application specific integrated circuit (ASIC).
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Patent Agency Ranking
公开(公告)号：US20230318633A1
公开(公告)日：2023-10-05
申请号：US17655082
申请日：2022-03-16
Inventor： John E. Acheson , Scott W. Stadelmann
IPC: H04B1/00
CPC classification number: H04B1/0007 , H04B1/0089 , H04B1/0096
Abstract: A digital radio includes an input configured to receive an input signal and an analog-to-digital converter (ADC) configured to sample analog data in the input signal into a digital input signal. The digital input signal has first digital data encoded at a first data rate modulated at a first frequency. The digital radio further includes a signal processor configured to generate, based on the digital input signal, a digital output signal having second digital data encoded at a second data rate modulated at a second frequency. The first data rate is different from the second data rate and/or the first frequency is different from the second frequency. The digital radio further includes an output configured to provide the digital output signal to a target device, where the second data rate and the second frequency match a frequency plan of the target device.
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公开(公告)号：US20240402356A1
公开(公告)日：2024-12-05
申请号：US17654308
申请日：2022-03-10
Inventor： John E. Acheson , Mitchell T. Dennis , John R. Bader , Jordan M. Jump
Abstract: A signal acquisition and tracking device includes an input configured to receive a global navigation satellite system (GNSS) signal, a software-based processor configured to execute software instructions to acquire the GNSS signal via the input and to generate, based on the acquired signal, one or more signal tracking parameters, and a hardware logic circuit operatively coupled to the processor. The logic circuit is configured to track the GNSS signal independently of the processor using the one or more signal tracking parameters generated by the processor. In some examples, the processor is configured to pull in and center the GNSS signal in time and frequency, and the logic circuit is further configured to track the pulled in and centered GNSS signal independently of the processor. In some examples, the processor acquires the signal and then hands-off control to the logic circuit for subsequent tracking of the signal.
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公开(公告)号：US12123958B2
公开(公告)日：2024-10-22
申请号：US17978590
申请日：2022-11-01
Inventor： John E. Acheson
Abstract: Techniques are provided for batch processing signal acquisition. A batch processing signal acquisition system implementing the techniques according to an embodiment includes a recording controller configured to store samples of an input signal to a memory. The input signal is received at a first sampling rate. The system also includes a playback controller configured to read samples from the memory for playback of the input signal at a second sampling rate. The system further includes an acquisition processor configured to detect and locate, in time and frequency, a signal of interest in the playback of the input signal. The system further includes a signal processor configured to process the signal of interest in the playback of the input signal based on the detection and location provided by the acquisition processor.
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公开(公告)号：US20240142635A1
公开(公告)日：2024-05-02
申请号：US17978590
申请日：2022-11-01
Inventor： John E. Acheson
Abstract: Techniques are provided for batch processing signal acquisition. A batch processing signal acquisition system implementing the techniques according to an embodiment includes a recording controller configured to store samples of an input signal to a memory. The input signal is received at a first sampling rate. The system also includes a playback controller configured to read samples from the memory for playback of the input signal at a second sampling rate. The system further includes an acquisition processor configured to detect and locate, in time and frequency, a signal of interest in the playback of the input signal. The system further includes a signal processor configured to process the signal of interest in the playback of the input signal based on the detection and location provided by the acquisition processor.
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公开(公告)号：US20240103182A1
公开(公告)日：2024-03-28
申请号：US17953512
申请日：2022-09-27
Inventor： John E. Acheson , Michael N. Kloos , Nathaniel L. James , Mitchell Dennis
IPC: G01S19/37
CPC classification number: G01S19/37
Abstract: Techniques are provided for employing an embedded software defined radio (SDR) in a navigation system. A navigation system implementing the techniques according to an embodiment includes a global positioning system (GPS) receiver configured to acquire and track received GPS signals. The system also includes an SDR configured to process received communication signals. The communication signals include timing data. The SDR is further configured to calculate position and navigation data based on a combination of the processed communication signals and the tracked GPS signals provided by the GPS receiver. The system further includes a system timer configured to provide a common time base for use by the GPS receiver and the SDR. The navigation system is implemented in an application specific integrated circuit (ASIC).
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