Signal modification techniques

Details Signal modification techniques Signal modification techniques

1975-06-02

1977-05-10

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

340324AD, 343 5DP, 343 5VQ, G01S 960, G06F 314

Patent

active

040231658

ABSTRACT:
Signals producing each spot in a digital two-dimensional spot matrix display, such as in a digital weather radar, are compared on a spot-by-spot basis with signals for immediately proceeding and following spots in each dimension. When the preceding and following spots have the same value, the spot being compared is caused to have that same value when displayed. The comparing circuitry may be provided signals from a radar antenna which receives, serially, signals at succeeding range points at a given azimuth and then at the same range points at succeeding azimuths. Signals at each given range at a plurality of succeeding azimuths may be averaged to produce an improved visual display. The compared signals may be further smoothed by averaging signals for succeeding azimuths and displaying the averaged signals alternating with the unaveraged signals.

REFERENCES:
patent: 2939129 (1960-05-01), Atlas et al.
patent: 3573789 (1971-04-01), Sharp et al.
patent: 3789386 (1974-01-01), Itoh
patent: 3921164 (1975-11-01), Anderson
IEEE Transactions on Geoscience Electronics, Apr. 1970, vol. GE-8, No. 2, pp. 88-94.

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