Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A wave effect enabling universal frequency scaling, monostatic passive
  radar, incoherent aperture synthesis, and general immunity to jamming and
  interference   A fundamental Doppler-like but asymmetric wave effect that shifts received
signals in frequency in proportion to their respective source distances, was
recently described as means for a whole new generation of communication
technology using angle and distance, potentially replacing TDM, FDM or CDMA,
for multiplexing. It is equivalent to wave packet compression by scaling of
time at the receiver, converting path-dependent phase into distance-dependent
shifts, and can multiply the capacity of physical channels. The effect was
hitherto unsuspected in physics, appears to be responsible for both the
cosmological acceleration and the Pioneer 10/11 anomaly, and is exhibited in
audio data. This paper discusses how it may be exploited for instant, passive
ranging of signal sources, for verification, rescue and navigation; incoherent
aperture synthesis for smaller, yet more accurate radars; universal immunity to
jamming or interference; and precision frequency scaling of radiant energy in
general.

28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs