Methods and apparatus for generating composite code sequences
US-9225384-B1 · Dec 29, 2015 · US
Modulation signals for a satellite navigation system
US8995575B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8995575-B2 |
| Application number | US-201213411477-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 2, 2012 |
| Priority date | Sep 1, 2003 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Techniques for processing a navigation signal are disclosed. In one particular embodiment, the techniques may be realized as a method processing a navigation signal, the method comprising the steps of: receiving, using a receiver, the navigation signal, the navigation signal comprising a carrier signal, a data signal and at least one ranging code modulated by at least one stepped subcarrier modulation signal, the at least one stepped subcarrier modulation signal comprising a number, m, of amplitude levels, where m>2, and wherein the amplitude levels have respective magnitudes and durations arranged to influence the power spectrum of the navigation signal is constrained in a predetermined manner, processing the navigation signal to recover the modulated at least one ranging code; and processing the recovered at least one modulated ranging code to recover at least one demodulated ranging code.
First claim
Opening claim text (preview).
The invention claimed is: 1. A non-transtory computer readable storage medium storing a computer program of instructions which, when executed by a processor, cause the processor to: receive a navigation signal, the navigation signal comprising a carrier signal, a data signal, and at least one ranging code modulated by at least one stepped subcarrier modulation signal, the at least one stepped subcarrier modulation signal comprises a number, m, of amplitude levels, wherein m>2; and…
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Electricity · mapped topic
- G01S19/02Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US8995575B2 cover?
- Techniques for processing a navigation signal are disclosed. In one particular embodiment, the techniques may be realized as a method processing a navigation signal, the method comprising the steps of: receiving, using a receiver, the navigation signal, the navigation signal comprising a carrier signal, a data signal and at least one ranging code modulated by at least one stepped subcarrier mod…
- Who is the assignee on this patent?
- Pratt Anthony R, Owen John Ivor Rewbridge, Secr Defence
- What technology area does this patent fall under?
- Primary CPC classification G01S19/02. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).