摘要:
Disclosed is a polarization-modulated transmitter for a weather radar, comprising at least two signal paths (3, 4) to which a high-frequency signal can be fed and which are connected to a coupler (8). Said transmitter features phase modulation of the signal that is to be emitted by means of the antenna (1). The same high-frequency signal can be fed to the two signal paths (3, 4), each of which is provided with at least one transmit amplifier (5, 6). A phase modulator (7) is arranged in one of the at least two signal paths (3, 4) for modulating the phase such that a high-frequency signal can first be phase-modulated and then be amplified.
摘要:
The invention relates to a multi-channel radiofrequency receiver (1) for electromagnetic waves, having a radiofrequency analogue section (2), which has an input (3) for an electrical signal from a reception device (4), and having a lower-frequency section (8, 9), which is connected downstream of the radiofrequency analogue section (2) and has a plurality of parallel channels (6b, 6c; 7b, 7c) for in each case different signal levels and an evaluation circuit, in which, in the radiofrequency analogue section (2), a signal divider (5) for splitting the signal, in accordance with a predeterminable division ratio, into signal elements which can be supplied to radiofrequency analogue channels (6a, 7a), downstream of which are connected in each case the channels (6b, 6c; 7b, 7c) of the lower-frequency section (8, 9), and the channels (6b, 6c; 7b, 7c) of the lower-frequency section (8, 9) each have an evaluation circuit for detecting the phase and amplitude of the respective signal element.
摘要:
Verfahren zum Erfassen von Parametern der Erdatmosphäre mit mindestens einer Messsensoren aufweisenden Sonde (1) in einem von einem Wetterradar (2) überwachten Atmosphärenvolumen, bei dem die von den Messsensoren gemessenen Daten per Funk an eine Station (3) gesendet werden und die Position der Sonde (1) bestimmt wird, wobei die Zeit und die Position der Sonde (1), zu bzw. bei der eine jede Messung der Daten durchgeführt wird, den gemessenen Daten zugeordnet werden, und die von dem Wetterradar (2) erfassten Daten des überwachten Atmosphärenvolumens mit den von den Messsensoren gemessenen Daten mit Vergleich der den gemessenen Daten zugeordneten Zeiten und den entsprechenden Daten des Wetterradars (2) zu diesen Zeiten sowohl zeitlich als auch mit Vergleich der den gemessenen Daten zugeordneten Positionen und den entsprechenden Daten des Wetterradars (2) der Positionen örtlich korreliert werden.
摘要:
The invention relates to a method for determining compound data of weather radars (1) in an overlapping region (2) of the monitoring regions of at least two weather radars (1), wherein polarimetric weather radars (1) are used as weather radars (1) and the measurements of the individual at least two polarimetric weather radars (1) for measuring points in the overlapping region (2) are combined. By means of the combined measuring points, a radar echo classification is carried out.