发明名称 |
Global positioning system receiver capable of functioning in the presence of interference |
摘要 |
Systems and methods are described for a GPS receiver capable of functioning in the presence of interference. A method includes detecting an interfering signal including: tuning a band pass filter over a frequency range; and at each of a plurality of incremental frequencies: computing a set of band pass filter coefficients; sending the set of band pass filter coefficients to a digital filter; repeatedly transforming an analog-to-digital converter output having a quantization level in excess of 2 bits into a band pass filter output with the digital filter to obtain a plurality of samples; computing an average of the plurality of samples; and comparing the average to a threshold to detect peaks that exceed a threshold. An apparatus, comprising: an analog radio frequency circuit; an analog-to-digital converter coupled to the analog radio frequency circuit, the analog-to-digital converter providing a quantization level in excess of 2 bits; a digital filter coupled to the analog-to-digital converter; and a digital circuit coupled to the digital filter.
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申请公布号 |
US2002012411(A1) |
申请公布日期 |
2002.01.31 |
申请号 |
US20010802484 |
申请日期 |
2001.03.09 |
申请人 |
HEINZL JOHANN;JACOBSEN GARY;YANG JINING;SHENOI KISHAN |
发明人 |
HEINZL JOHANN;JACOBSEN GARY;YANG JINING;SHENOI KISHAN |
分类号 |
G01S1/00;H03J1/00;H03J3/08;(IPC1-7):H04B1/10 |
主分类号 |
G01S1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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