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The radial acceleration between the target and the observation platform causes Doppler frequency changes. High-precision estimation of Doppler change rate has broad application in the field of signal processing. To improve the processing gain,firstly, frequency domain accumulation is used within the pulse, the data for long time is diluted into limited spectral line data, then,the estimation of doppler rate of change is transformed into a least squares estimation through spectral correlation processing of interpulse. It is possible for inter pulse accumulation. The processing gain can be greatly improved, and the high estimation accuracy can be easily achieved by intra-pulse accumulation and multi-pulse least squares estimation. The difficulty of accurately estimating the frequency, time of arrival and initial phase is avoided by cleverly utilizing spectral correlation processing. This algorithm is insensitive to intra-pulse modulation and pulse repetition interval, and has strong universality. Finally, the validity, universality and high-precision estimation of the algorithm are verified through simulation in various scenarios.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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